def plot_truss(x):
ss = SystemElements()
p1 = Vertex(0, 0)
p2 = Vertex(x[30], 0)
p3 = Vertex(240, 0)
p4 = Vertex(x[31], 0)
p5 = Vertex(480, 0)
p6 = Vertex(x[32], x[33])
p7 = Vertex(x[34], x[35])
p8 = Vertex(x[36], x[37])
verticies = [p1, p2, p3, p4, p5, p6, p7, p8]
members = [(0, 1), (1, 2), (2, 3), (3, 4), (0, 5), (1, 5), (2, 5), (5, 6),
(1, 6), (2, 6), (3, 6), (6, 7), (2, 7), (3, 7), (4, 7)]
weight = 0
for i in range(0, 30, 2):
if x[i]:
start = verticies[members[int(i / 2)][0]]
end = verticies[members[int(i / 2)][1]]
length = calc_length(start, end)
area = a[x[i + 1]]
Ix = ix[x[i + 1]]
weight += length * area * dens
EI = e * Ix
EA = e * area
ss.add_element(location=[start, end], EA=EA, EI=EI)
ss.add_support_hinged(1)
ss.add_support_roll(3)
ss.add_support_roll(5)
# ss.q_load(element_id=[1, 2, 3, 4], q=-0.1)
ss.point_load(node_id=[2, 4], Fz=[-100000, -100000])
ss.solve()
# ss.show_structure()
ss.show_displacement()
def display_truss_design(x):
"""
find the displacements in the specified truss as well as the weight of the truss
:param x: the defining parameters of the truss. a list of values, in the order on/off, beam number
:return:
"""
ss = SystemElements()
beam_locations = []
side_length = 120
beam_locations.append([[0, 0], [0, side_length]])
beam_locations.append([[0, side_length], [side_length, side_length]])
beam_locations.append([[side_length, side_length], [side_length, 0]])
beam_locations.append([[side_length, 0], [0, side_length]])
beam_locations.append([[0, 0], [side_length, side_length]])
for i, beam in enumerate(beam_locations):
if x[i * 2]:
area = a[x[i * 2 + 1]]
ss.add_element(location=beam, EA=e * area, EI=e * ix[x[i * 2 + 1]])
ss.add_support_fixed(node_id=1)
ss.add_support_roll(node_id=4)
ss.point_load(Fx=50, node_id=2)
ss.point_load(Fz=-50, node_id=3)
ss.solve()
# ss.show_structure()
ss.show_displacement()
return
def build(self):
builds = np.zeros(self.pop_size, dtype=object)
middle_node = np.zeros(self.pop_size, dtype=int)
all_lengths = np.zeros(self.pop_size, dtype=int)
n_elements = np.zeros(self.pop_size, dtype=int)
for i in range(self.pop.shape[0]):
ss = SystemElements()
on = np.argwhere(self.pop[i] == 1)
for j in on.flatten():
n1, n2 = self.comb[j]
l1 = self.loc[n1]
l2 = self.loc[n2]
ss.add_element([l1, l2])
# add mirror
ss.add_element([
mirror(l1, self.mirror_line),
mirror(l2, self.mirror_line)
])
# Placing the supports on the outer nodes, and the point load on the middle node.
x_range = ss.nodes_range('x')
if len(x_range) <= 2:
builds[i] = None
all_lengths[i] = 0
n_elements[i] = 0
else:
length = max(x_range)
start = min(x_range)
ids = list(ss.node_map.keys())
max_node_id = ids[np.argmax(x_range)]
for j in range(self.height):
middle_node_id = ss.nearest_node(
"both",
np.array([(length + start) / 2, self.height - j]))
if middle_node_id:
break
if middle_node_id is None:
middle_node_id = ids[np.argmin(
np.abs(np.array(x_range) - (length + start) / 2))]
ss.add_support_hinged(1)
ss.add_support_hinged(max_node_id)
ss.point_load(middle_node_id, Fz=-100)
builds[i] = ss
middle_node[i] = middle_node_id
all_lengths[i] = length
n_elements[i] = on.size
self.builds = builds
return builds, middle_node, all_lengths, n_elements
def solve_truss(x):
ss = SystemElements()
p1 = Vertex(0, 0)
p2 = Vertex(x[30], 0)
p3 = Vertex(240, 0)
p4 = Vertex(x[31], 0)
p5 = Vertex(480, 0)
p6 = Vertex(x[32], x[33])
p7 = Vertex(x[34], x[35])
p8 = Vertex(x[36], x[37])
verticies = [p1, p2, p3, p4, p5, p6, p7, p8]
members = [(0, 1), (1, 2), (2, 3), (3, 4), (0, 5), (1, 5), (2, 5), (5, 6),
(1, 6), (2, 6), (3, 6), (6, 7), (2, 7), (3, 7), (4, 7)]
weight = 0
for i in range(0, 30, 2):
if x[i]:
start = verticies[members[int(i / 2)][0]]
end = verticies[members[int(i / 2)][1]]
length = calc_length(start, end)
area = a[x[i + 1]]
Ix = ix[x[i + 1]]
weight += length * area * dens
EI = e * Ix
EA = e * area
ss.add_element(location=[start, end], EA=EA, EI=EI)
ss.add_support_hinged(1)
ss.add_support_roll(3)
ss.add_support_roll(5)
# ss.q_load(element_id=[1, 2, 3, 4], q=-0.1)
ss.point_load(node_id=[2, 4], Fz=[-10000, -10000])
try:
ss.solve()
# ss.show_structure()
# ss.show_reaction_force()
# ss.show_displacement()
displ = ss.get_node_displacements()
phi_1 = np.abs(displ[0][3])
d2x = np.abs(displ[1][1])
d2y = np.abs(displ[1][2])
d3x = np.abs(displ[2][1])
d4x = np.abs(displ[3][1])
d4y = np.abs(displ[3][2])
d5x = np.abs(displ[4][1])
avg = np.average(np.array([d2x, d2y, d3x, d4x, d4y, d5x]))
fitness = [avg, weight]
except:
fitness = [999, 99999999]
# print(weight)
# print(ss.get_node_displacements())
return fitness
def truss_constraints(x):
"""
find the displacements in the specified truss as well as the weight of the truss
:param x: the defining parameters of the truss. a list of values, in the order on/off, beam number
:return:
"""
ss = SystemElements()
weight = 0
max_displ = 0.5
max_weight = 500
beam_locations = []
side_length = 120
beam_locations.append([[0, 0], [0, side_length]])
beam_locations.append([[0, side_length], [side_length, side_length]])
beam_locations.append([[side_length, side_length], [side_length, 0]])
beam_locations.append([[side_length, 0], [0, side_length]])
beam_locations.append([[0, 0], [side_length, side_length]])
for i, beam in enumerate(beam_locations):
if x[i * 2]:
length = calc_length(beam)
area = a[x[i * 2 + 1]]
weight += area * dens * length
ss.add_element(location=beam, EA=e * area, EI=e * ix[x[i * 2 + 1]])
ss.add_support_fixed(node_id=1)
ss.add_support_roll(node_id=4)
ss.point_load(Fx=50, node_id=2)
ss.point_load(Fz=-50, node_id=3)
ss.solve()
# ss.show_structure()
# ss.show_displacement()
node_disp = []
displacements = ss.get_node_displacements()
for (node, ux, uy, phi) in displacements:
displ = np.sqrt(ux**2 + uy**2)
displ = (displ - max_displ) / max_displ
node_disp.append(displ)
weight = (weight - max_weight) / max_weight
node_disp.append(weight)
return node_disp
from anastruct.fem.system import SystemElements
# tests parallel direction of the q-load and dead load.
ss = SystemElements()
ss.add_element([-2, 2])
ss.add_element([0, 4])
ss.add_element([-2, 6])
ss.add_element([0, 8])
ss.add_support_hinged(1)
ss.add_support_hinged(5)
ss.q_load(1, (1, 2, 3, 4), "x")
if __name__ == "__main__":
ss.solve()
print([a[1] for a in ss.get_node_results_system()])
ss.show_results()
from anastruct.fem.system import SystemElements
"""
Test the primary force vector when applying a q_load at a hinged element.
"""
ss = SystemElements()
ss.add_element([[0, 0], [3.5, 0]])
ss.add_element([7, 0], spring={1: 100})
ss.add_support_fixed([1])
ss.add_support_hinged(3)
ss.point_load(2, Fz=-100)
if __name__ == "__main__":
ss.show_displacement()
ss.show_reaction_force()
ss.show_bending_moment()
from anastruct.fem.system import SystemElements
ss = SystemElements()
ss.add_element([[0, 0], [2, 0]])
ss.add_element([4, 0])
ss.add_element([6, 0])
ss.add_support_fixed([1, 4])
ss.point_load([2, 3], [20, -20])
if __name__ == "__main__":
ss.solve()
ss.show_axial_force()
from anastruct.fem.system import SystemElements ss = SystemElements() ss.add_element(location=[[0, 0], [5, 0]], EA=5e9, EI=8000) ss.add_element(location=[[5, 0], [5, 5]], EA=5e9, EI=4000) ss.moment_load(Ty=10, node_id=3) ss.add_support_hinged(node_id=1) ss.add_support_hinged(node_id=3) ss.solve() ss.show_structure() ss.show_reaction_force() ss.show_axial_force() ss.show_shear_force() ss.show_bending_moment() ss.show_displacement()
from modABC import * from GColumn_ABC import * from anastruct.fem.system import SystemElements # Create a new system object. ss = SystemElements() # Add beams to the system. ss.add_element(location=[[0, 0], [0, 5]],EA=3000000.0, EI=40000) ss.add_element(location=[[0, 5], [5, 5]],EA=2250000.0, EI=16875) ss.add_element(location=[[5, 5], [5, 0]],EA=3000000.0, EI=40000) ss.add_element(location=[[0, 5], [0, 10]],EA=3000000.0, EI=40000) ss.add_element(location=[[0, 10], [5, 10]],EA=2250000.0, EI=16875) ss.add_element(location=[[5, 10], [5, 5]],EA=3000000.0, EI=40000) # Add a fixed support at node 1. ss.add_support_fixed(node_id=1) ss.add_support_fixed(node_id=4) # Add a rotational spring at node 4. #ss.add_support_spring(node_id=4, translation=3, k=4000) # Add loads. ss.point_load(Fx=30, node_id=2) ss.q_load(q=-100, element_id=2) ss.point_load(Fx=30, node_id=5) ss.q_load(q=-100, element_id=5) ss.show_structure() ss.solve() #ss.show_reaction_force() #ss.show_axial_force() ss.show_bending_moment() #ss.show_displacement() print(ss.get_element_results(element_id=2)['length'])
print(i)
# De eigenschappen van de balk worden willekeurig gekozen. De eigenschappne zijn de overspanning,
# de afstand waarop de puntlast aangrijpt en de groote van de puntlast en de q-last. De willekeurig gekozen
# eigenschappen liggen wel tussen bepaalde waardes en worden afgerong op 1 decimaal
overspanning = round(random.uniform(0.1, 25), 1)
afstand_puntlast = overspanning * round(random.uniform(0.1, 0.9), 1)
puntlast = round(random.uniform(-2, -100), 1)
qlast = round(random.uniform(-10, -40), 1)
# De constructie bestaat uit 1 element, dus het traagheidsmoment en het oppervlakte van het profiel hebben geen
# invloed op de oplegreacties ed. Vandaar dat de stijfehedn ed voor het gemak zo worden verklaard.
ss = SystemElements(EA=EA, EI=EI)
# Construeren van het element. het element wordt in twee delen opgedeeld omdat Anastruct geen puntlast op afstanden
# tot knopen toe laat, maar alleen op knopen zelf.
ss.add_element(location=[[0, 0], [afstand_puntlast, 0]])
ss.add_element(location=[[afstand_puntlast, 0], [overspanning, 0]])
# Toevoegen van opleggingen. Een vast scharnier en een rolscharnier. het systeem is statisch bepaald.
ss.add_support_hinged(node_id=1)
ss.add_support_roll(node_id=3)
# Toevoegen van de lasten. De puntlast grijpt aan op de middelste knoop, een willekeurige afstand dus.
ss.point_load(node_id=2, Fz=puntlast)
ss.q_load(q=qlast, element_id=1)
# Uitrekenen van de constructie. De resultaten worden opgeslagen onder resultaten.
ss.solve()
resultaat = ss.get_element_results()
# Lijst om de maximale momenten in op te slaan. Daarna itereren over de elementen en de maximale momenten opslaan.
from anastruct.fem.system import SystemElements
ss = SystemElements()
ss.add_element([10, 0])
ss.insert_node(1, factor=0.3)
ss.insert_node(2, [5, 5])
if __name__ == "__main__":
ss.show_structure(values_only=True)
I_ligger = HEA[list(HEA)[11]]["Iy"]
I_kolommen = HEA[list(HEA)[0]]["Iy"]
print(I_ligger/I_kolommen)
A_ligger = HEA[list(HEA)[11]]["A"]
A_kolommen = HEA[list(HEA)[0]]["A"]
EG_profiel_ligger = HEA[list(HEA)[11]]["G"] / 100
EG_profiel_kolommen = HEA[list(HEA)[0]]["G"] / 100
E = 210000
hoogte = 4.7
overspanning = 8.0
ss = SystemElements()
ss.add_element(location=[[0, 0], [0, 4.7]], EA=to_kN(E * A_kolommen),
EI=to_kNm2(E * I_kolommen))
ss.add_element(location=[[0, hoogte], [overspanning, hoogte]], EA=to_kN(E * A_ligger),
EI=to_kNm2(E * I_ligger))
ss.add_element(location=[[overspanning, hoogte], [overspanning, 0]],
EA=to_kN(E * A_kolommen), EI=to_kNm2(E * I_kolommen))
ss.add_support_hinged(node_id=1)
ss.add_support_hinged(node_id=4)
print(-1.1 * 2 * 5.6 * 1.25 - 1.1 * EG_profiel_ligger - 1.35 * 1.5 * 5.6 * 1.25)
ss.q_load(q=-1.1 * 2 * 5.6 * 1.25 - 1.1 * EG_profiel_ligger - 1.35 * 1.5 * 5.6 * 1.25, element_id=2)
ss.point_load(node_id=2, Fz=- 1.1 * EG_profiel_kolommen * 4.7)
ss.point_load(node_id=3, Fz=- 1.1 * EG_profiel_kolommen * 4.7)
ss.solve()
ss.show_axial_force()
from anastruct.fem.system import SystemElements
# tests parallel direction of the q-load and dead load.
ss = SystemElements()
a = 1
ss.add_element([3, 0], g=a)
ss.add_element([[3, 0], [6, 3]], g=a)
ss.add_element([12, 3], g=a)
ss.add_element([15, 0], g=a)
ss.add_support_hinged(1)
ss.add_support_hinged(5)
if __name__ == "__main__":
ss.solve()
print([a[1] for a in ss.get_node_results_system()])
ss.show_results()
from anastruct.fem.system import SystemElements
"""
Test the primary force vector when applying a q_load at a hinged element.
"""
ss = SystemElements()
ss.add_element([[0, 0], [3.5, 0]])
ss.add_element([7, 0], spring={1: 100})
ss.add_support_fixed([1])
ss.add_support_hinged(3)
ss.point_load(2, Fy=-100)
if __name__ == "__main__":
ss.solve()
ss.show_displacement()
ss.show_reaction_force()
ss.show_bending_moment()
from anastruct.fem.system import SystemElements
ss = SystemElements(EI=5e3, EA=1e5)
ss.add_element([0, 10])
ss.add_support_hinged(1)
ss.add_support_roll(2, 1)
ss.point_load(2, Fy=-1)
if __name__ == "__main__":
ss.solve(geometrical_non_linear=True, discretize_kwargs=dict(n=15))
print(ss.buckling_factor)
ss.show_displacement()
from anastruct.fem.system import SystemElements ss = SystemElements(EA=15000, EI=5000) # Add beams to the system. ss.add_element(location=[[0, 0], [0, 5]]) ss.add_element(location=[[0, 5], [5, 5]]) ss.add_element(location=[[5, 5], [5, 0]]) # Add a fixed support at node 1. ss.add_support_fixed(node_id=1) # Add a rotational spring support at node 4. ss.add_support_spring(node_id=4, translation=3, k=4000) # Add loads. ss.point_load(Fx=30, node_id=2) ss.q_load(q=-10, element_id=2) # Solve ss.solve() # Get visual results. ss.show_structure() ss.show_reaction_force() ss.show_axial_force() ss.show_shear_force() ss.show_bending_moment() ss.show_displacement()
from anastruct.fem.system import SystemElements
from anastruct.material.profile import HEA
from anastruct.material.units import to_kNm2, to_kN
load_factor = 3
E = 210e3
profile = HEA[180]
EA = to_kN(E * profile["A"])
EI = to_kNm2(E * profile["Iy"])
mp = profile["Wy"] * 235 * 1e-6
ss = SystemElements(EA=EA, EI=EI, load_factor=load_factor)
ss.add_element([[0, 0], [0, 4]], mp={2: mp})
ss.add_element([0, 8], mp={1: mp, 2: mp})
ss.add_element([2, 8], mp={1: mp, 2: mp})
ss.add_element([4, 8], mp={1: mp, 2: mp})
ss.add_element([4, 4], mp={1: mp, 2: mp})
ss.add_element([4, 0], mp={1: mp, 2: mp})
ss.add_truss_element([[0, 4], [4, 4]])
ss.add_support_hinged(1)
ss.add_support_fixed(7)
ss.q_load(-20, 3)
ss.q_load(-20, 4)
ss.q_load(-1, 1)
ss.q_load(-1, 2)
if __name__ == "__main__":
import time
from copy import deepcopy
from anastruct.fem.system import SystemElements ss = SystemElements(plot_backend="plotly") ss.add_element([[0, 0], [1, 0]]) ss.add_element([2, 0]) ss.add_support_hinged(1) ss.add_support_spring(3, 2, 3000) ss.point_load(2, Fy=-1000) ss.solve() ss.show_structure() ss.show_bending_moment() ss.show_displacement()
from anastruct.fem.system import SystemElements
from anastruct.material.profile import HEA
from anastruct.material.units import to_kNm2, to_kN
load_factor = 3
E = 210e3
profile = HEA[180]
EA = to_kN(E * profile['A'])
EI = to_kNm2(E * profile['Iy'])
mp = profile["Wy"] * 235 * 1e-6
ss = SystemElements(EA=EA, EI=EI, load_factor=load_factor)
ss.add_element([[0, 0], [0, 4]], mp={2: mp})
ss.add_element([0, 8], mp={1: mp, 2: mp})
ss.add_element([2, 8], mp={1: mp, 2: mp})
ss.add_element([4, 8], mp={1: mp, 2: mp})
ss.add_element([4, 4], mp={1: mp, 2: mp})
ss.add_element([4, 0], mp={1: mp, 2: mp})
ss.add_truss_element([[0, 4], [4, 4]])
ss.add_support_hinged(1)
ss.add_support_fixed(7)
ss.q_load(-20, 3)
ss.q_load(-20, 4)
ss.q_load(-1, 1)
ss.q_load(-1, 2)
if __name__ == "__main__":
ss.solve()
def krachten_en_verplaatsingen_elementen(self, belastingcombi):
# Belasting combi is een dict. Op deze wijze worden de van toepassing zijnde factoren bepaald.
factor_wind = belastingcombi.get('factor veranderlijk wind')
factor_permanent = belastingcombi.get('factor permanent')
factor_dak_ver = belastingcombi.get('factor veranderlijk dak')
# Opstarten van een constructie taak. Anastruct standaard opzet.
ss = SystemElements()
# Creeren elementen voor liggers en kolommen, met bijbehorende EA en EI.
ss.add_element(location=[[0, 0], [0, self.hoogte]],
EA=to_kN(E * self.A_kolommen),
EI=to_kNm2(E * self.I_kolommen))
ss.add_element(location=[[0, self.hoogte],
[self.overspanning, self.hoogte]],
EA=to_kN(E * self.A_ligger),
EI=to_kNm2(E * self.I_ligger))
ss.add_element(location=[[self.overspanning, self.hoogte],
[self.overspanning, 0]],
EA=to_kN(E * self.A_kolommen),
EI=to_kNm2(E * self.I_kolommen))
# Toevoegen verbindingen.
ss.add_support_hinged(node_id=1)
ss.add_support_hinged(node_id=4)
# Veranderlijke windbelasting kolom.
ss.q_load(q=-factor_wind * self.hoh, element_id=1)
# Veranderlijke en permanente lasten ligger.
ss.q_load(q=-factor_permanent * 2 * self.hoh -
factor_permanent * self.EG_profiel_ligger -
factor_dak_ver * 1.5 * self.hoh,
element_id=2)
# Vaste belastingen kolommen
ss.point_load(node_id=2,
Fz=-factor_permanent * self.EG_profiel_kolommen *
self.hoogte)
ss.point_load(node_id=3,
Fz=-factor_permanent * self.EG_profiel_kolommen *
self.hoogte)
# Oplossen constructie. Onder elements worden resultaten opgeslagen, heeft de structuur van een dict.
ss.solve()
elements = ss.get_element_results()
# Als de functie wordt aangeroepen voor de krachten op de elementen. Is te zien aan de factoren.
if factor_wind is not 1 and factor_dak_ver is not 1:
# Maatgevende krachten per element bepalen, die geranschikt worden opgeslagen in een lijst. De eerste kracht
# in de lijst correspondeert met het eerste element van het portaal.
moment = maximaal_moment(elements)
dwarskracht = ss.get_element_result_range("shear")
normaalkracht = ss.get_element_result_range("axial")
# De krachten per element wordne nu in een dict opgeslagen. Dit ziet er als volgt uit:
# {"dwarskracht": [25.0, 53.9, 7.8] etc.
krachten_elementen = {
"dwarskracht": dwarskracht,
"normaalkracht": normaalkracht,
"moment": moment
}
return krachten_elementen
# Anders wordt de functie aangeroepen voor verplaatsingen.
else:
# Verkrijgen relatieve doorbuiging.
element_doorbuiging = ss.get_element_results()
element_doorbuiging = element_doorbuiging[1].get(
'wmin') / self.overspanning
# Verkrijgen relatieve verplaatsing.
knoop_verplaatsingen = ss.get_node_displacements()
knoop_verplaatsingen = knoop_verplaatsingen[1][3] / self.hoogte
return element_doorbuiging, knoop_verplaatsingen
from anastruct.fem.system import SystemElements
# tests parallel direction of the q-load and dead load.
ss = SystemElements()
a = 1
ss.add_element([2, 2], g=a)
ss.add_element([4, 0], g=a)
ss.add_element([6, 2], g=a)
ss.add_element([8, 0], g=a)
ss.add_support_hinged(1)
ss.add_support_hinged(5)
if __name__ == "__main__":
ss.solve()
print([a[1] for a in ss.get_node_results_system()])
ss.show_results()
from anastruct.fem.system import SystemElements
ss = SystemElements()
ss.add_element([[0, 0], [2, 0]])
ss.add_element([4, 0])
ss.add_element([6, 0])
ss.add_support_fixed([1, 4])
ss.moment_load([2, 3], [20, -20])
if __name__ == "__main__":
ss.solve()
ss.show_bending_moment()
from anastruct.fem.system import SystemElements
"""
Test the primary force vector when applying a q_load at a hinged element.
"""
ss = SystemElements()
ss.add_element([[0, 0], [7, 0]], spring={2: 0})
ss.add_element([7.1, 0])
ss.add_support_fixed([1, 3])
ss.q_load(-10, 1)
ss.solve()
ss.show_reaction_force()
ss.show_bending_moment()
from anastruct.fem.system import SystemElements
ss = SystemElements(mesh=250)
ss.add_element(location=[(0, 0), (1.33, 0)], EA=356, EI=1332)
ss.add_element(location=[(1.33, 0), (2.0, 0)], EA=356, EI=1332)
ss.add_support_hinged(node_id=ss.find_node_id((0, 0)))
ss.add_support_hinged(node_id=ss.find_node_id((1.33, 0)))
ss.q_load(q=-1000.0, element_id=1, direction="y")
ss.q_load(q=-1000.0, element_id=2, direction="y")
if __name__ == "__main__":
ss.solve()
ss.show_displacement()
from anastruct.fem.system import SystemElements
"""
Geting section form sectionbase
"""
ss = SystemElements()
ss.add_element([[0, 0], [10, 0]], steelsection="IPE 300", E=210e9, sw=True, orient="z")
ss.add_element([[0, 1], [10, 1]], b=1.0, h=1.0, E=210e9, gamma=20)
ss.add_element([[0, 2], [10, 2]], d=0.6, E=210e9)
if __name__ == "__main__":
ss.show_structure(verbosity=0, annotations=True)
from anastruct.fem.system import SystemElements
"""
Test dead loads on the structure. TO DO! Distributed axial force
"""
ss = SystemElements()
ss.add_element([[0, 0], [10, 5]], g=1)
ss.add_support_hinged(1)
ss.add_support_roll(2, 2)
if __name__ == '__main__':
ss.solve()
ss.show_reaction_force()
ss.show_axial_force()
ss.show_bending_moment()
from anastruct.fem.system import SystemElements
"""
Test dead loads on the structure. TO DO! Distributed axial force
"""
ss = SystemElements()
ss.add_element([[0, 0], [10, 5]], g=1)
ss.add_support_hinged(1)
ss.add_support_roll(2, 2)
if __name__ == '__main__':
ss.solve()
ss.show_reaction_force()
ss.show_axial_force()
ss.show_bending_moment()
from anastruct.fem.system import SystemElements import numpy as np ss = SystemElements(EA=15000, EI=5000) # Add beams to the system. ss.add_element(location=[[0, 0], [0, 5]]) ss.add_element(location=[[0, 5], [5, 5]]) ss.add_element(location=[[5, 5], [5, 0]]) ss.add_element(location=[[5, 0], [0, 5]]) # Add a fixed support at node 1. ss.add_support_fixed(node_id=1) # Add a rotational spring support at node 4. ss.add_support_fixed(node_id=4) # Add loads. ss.point_load(Fx=30, node_id=2) ss.q_load(q=-20, element_id=2) # Solve ss.solve() # Get visual results. # ss.show_structure() # ss.show_reaction_force() # ss.show_axial_force() # ss.show_shear_force() # ss.show_bending_moment() # ss.show_displacement()
from anastruct.fem.system import SystemElements ss = SystemElements(plot_backend="plotly") ss.add_element([[0, 0], [1, 0]]) ss.add_element([2, 0]) ss.add_support_hinged(1) ss.add_support_spring(3, 2, 3000) ss.point_load(2, Fz=-1000) ss.solve() ss.show_structure() ss.show_bending_moment() ss.show_displacement()
from anastruct.fem.system import SystemElements
"""
Test dead loads on the structure. TO DO! Distributed axial force
"""
ss = SystemElements()
ss.add_element([[0, 6], [5, 4]], g=5)
ss.add_element([7, 3.2], g=5)
ss.add_element([[0, 0], [5, 4]], spring={2: 0})
ss.add_support_hinged([1, 4])
if __name__ == "__main__":
ss.solve()
ss.show_axial_force()
from anastruct.fem.system import SystemElements
from anastruct import LoadCase, LoadCombination
import matplotlib.pyplot as plt
import numpy as np
ss = SystemElements()
height = 10
x = np.cumsum([0, 4, 7, 7, 4])
y = np.zeros(x.shape)
x = np.append(x, x[::-1])
y = np.append(y, y + height)
ss.add_element_grid(x, y)
ss.add_element([[0, 0], [0, height]])
ss.add_element([[4, 0], [4, height]])
ss.add_element([[11, 0], [11, height]])
ss.add_element([[18, 0], [18, height]])
ss.add_support_hinged([1, 5])
ss.show_structure()
lc_wind = LoadCase('wind')
lc_wind.q_load(q=-1, element_id=[10, 11, 12, 13, 5])
print(lc_wind)
ss.apply_load_case(lc_wind)
ss.show_structure()
# reset the structure
from anastruct.fem.system import SystemElements
"""
Test dead loads on the structure. TO DO! Distributed axial force
"""
ss = SystemElements()
ss.add_element([[0, 6], [5, 4]], g=5)
ss.add_element([7, 3.2], g=5)
ss.add_element([[0, 0], [5, 4]], spring={2: 0})
ss.add_support_hinged([1, 4])
if __name__ == "__main__":
ss.solve()
ss.show_axial_force()
from anastruct.fem.system import SystemElements
ss = SystemElements()
ss.add_element(location=[[0, 0], [5, 0]], EA=5e9, EI=8000, spring={2: 0})
ss.add_element(location=[[5, 0], [5, 5]], EA=5e9, EI=4000)
ss.moment_load(Ty=10, node_id=3)
ss.add_support_hinged(node_id=1)
ss.add_support_hinged(node_id=3)
ss.solve()
ss.show_structure()
ss.show_reaction_force()
ss.show_axial_force()
ss.show_shear_force()
ss.show_bending_moment()
ss.show_displacement()
from anastruct.fem.system import SystemElements
"""
Test the primary force vector when applying a q_load at a hinged element.
"""
ss = SystemElements()
ss.add_element([[0, 0], [7, 0]], spring={2: 0})
ss.add_element([7.1, 0])
ss.add_support_fixed([1, 3])
ss.q_load(-10, 1)
ss.solve()
ss.show_reaction_force()
ss.show_bending_moment()
from anastruct.fem.system import SystemElements
ss = SystemElements()
ss.add_element([0, 10])
ss.add_element([5, 10])
ss.add_element([5, 0])
ss.add_support_hinged(1)
ss.add_support_hinged(4)
ss.point_load(2, Fz=-10, rotation=30)
if __name__ == "__main__":
ss.show_structure()
from anastruct.fem.system import SystemElements
ss = SystemElements(mesh=10)
ss.add_element([10, 0])
ss.add_element([20, 0])
ss.q_load(-10, [1, 2])
ss.add_support_hinged([1, 2, 3])
if __name__ == "__main__":
ss.solve()
for el in ss.element_map.values():
print(el.deflection.max())
ss.show_results()
def build_single_bridge(dna,
comb,
loc,
height,
get_ss=False,
unit="deflection",
EI=15e3,
roll=True,
support_btm=False,
es=False):
"""
Build a single bridge structure.
:param dna: (array) DNA from population.
:param comb: (array) All possible combinations.
:param loc: (array) All possible locations.
:param height: (int) Maximum height of the bridge.
:param unit: (str) Make this important in the fitness score evaluation. {deflection, axial compression,
tension, moment)
:param EI: (flt) Bending stiffness of the structure.
:param roll: (bool) Add a support that is free in x.
:param support_btm: (bool) Place the support at the bottom of the grid.
:param es: (bool) Special code for Evolution Strategies.
:return: (unit, length, number of elements)
"""
ss = SystemElements(EI=EI, mesh=3)
on = np.argwhere(dna == 1).flatten()
# Add the elements based on the dna
mirror_line = 0
for j in on:
n1, n2 = comb[j]
l1 = loc[n1]
l2 = loc[n2]
ss.add_element([l1, l2])
mirror_line = max(mirror_line, l1[0], l2[0])
# add mirrored element
for j in on:
n1, n2 = comb[j]
l1 = loc[n1]
l2 = loc[n2]
ss.add_element([mirror(l1, mirror_line), mirror(l2, mirror_line)])
# Placing the supports on the outer nodes, and the point load on the middle node.
x_range = ss.nodes_range('x')
# A bridge of one element is no bridge, it's a beam.
if len(x_range) <= 2:
return None
else:
length = max(x_range)
start = min(x_range)
ids = list(ss.node_map.keys())
# Find the ids of the middle node for the force application,
# and the most right node for the support of the bridge
max_node_id = ids[np.argmax(x_range)]
for j in range(height):
middle_node_id = ss.nearest_node(
"both", np.array([(length + start) / 2, height - j]))
if middle_node_id:
break
if middle_node_id is None:
middle_node_id = ids[np.argmin(
np.abs(np.array(x_range) - (length + start) / 2))]
# Find the support ids in case the supports should be place in the middle.
if support_btm:
left_node_id = 1
right_node_id = max_node_id
else:
idx = np.argsort(np.abs(np.arange(height) - height // 2))
for j in idx:
left_node_id = ss.nearest_node("both", np.array([start, j]))
if left_node_id:
break
for j in idx:
right_node_id = ss.nearest_node("both",
np.array([start + length, j]))
if right_node_id:
break
# Add support conditions
ss.add_support_hinged(left_node_id)
if roll and right_node_id is not None:
ss.add_support_roll(right_node_id)
elif right_node_id is not None:
ss.add_support_hinged(right_node_id)
ss.point_load(middle_node_id, Fz=-100)
if ss.validate():
if get_ss:
return ss
ss.solve()
if unit == "deflection":
val = np.abs(ss.get_node_displacements(middle_node_id)["uy"])
elif unit == "axial compression":
val = -np.min(ss.get_element_result_range("axial"))
elif unit == "tension":
val = np.max(ss.get_element_result_range("axial"))
elif unit == "moment":
val = np.abs((ss.get_element_result_range("moment")))
else:
raise LookupError("Unit is not defined")
if es:
return val, length - start, on.size, max(ss.nodes_range('y'))
return val, length - start, on.size
from anastruct.fem.system import SystemElements ss = SystemElements() ss.add_element(location=[[0, 0], [5, 0]], EA=5e9, EI=8000) ss.add_element(location=[[5, 0], [5, 5]], EA=5e9, EI=4000) ss.moment_load(Ty=10, node_id=3) ss.add_support_hinged(node_id=1) ss.add_support_hinged(node_id=3) ss.solve() ss.show_structure() ss.show_reaction_force() ss.show_axial_force() ss.show_shear_force() ss.show_bending_moment() ss.show_displacement()
from anastruct.fem.system import SystemElements
"""
Geting section form sectionbase
"""
ss = SystemElements()
ss.add_element([[0, 0], [10, 0]], steelsection='IPE 300', E=210e9, sw=True, orient='z')
ss.add_element([[0, 1], [10, 1]], b=1.0, h=1.0, E=210e9, gamma=20)
ss.add_element([[0, 2], [10, 2]], d=0.6, E=210e9)
if __name__ == '__main__':
ss.show_structure(verbosity=0, annotations=True)
from anastruct.fem.system import SystemElements
from anastruct import LoadCase, LoadCombination
import matplotlib.pyplot as plt
import numpy as np
ss = SystemElements()
height = 10
x = np.cumsum([0, 4, 7, 7, 4])
y = np.zeros(x.shape)
x = np.append(x, x[::-1])
y = np.append(y, y + height)
ss.add_element_grid(x, y)
ss.add_element([[0, 0], [0, height]])
ss.add_element([[4, 0], [4, height]])
ss.add_element([[11, 0], [11, height]])
ss.add_element([[18, 0], [18, height]])
ss.add_support_hinged([1, 5])
ss.show_structure()
lc_wind = LoadCase("wind")
lc_wind.q_load(q=-1, element_id=[10, 11, 12, 13, 5])
print(lc_wind)
ss.apply_load_case(lc_wind)
ss.show_structure()
# reset the structure
from anastruct.fem.system import SystemElements
# tests parallel direction of the q-load and dead load.
ss = SystemElements()
a = 1
ss.add_element([3, 0], g=a)
ss.add_element([[3, 0], [6, 3]], g=a)
ss.add_element([12, 3], g=a)
ss.add_element([15, 0], g=a)
ss.add_support_hinged(1)
ss.add_support_hinged(5)
if __name__ == "__main__":
ss.solve()
print([a[1] for a in ss.get_node_results_system()])
ss.show_results()