def test_knownframe(self):
xs1 = xs.generalSection(A=1, Ix=1)
s1 = sc.Structure(xs1, ma.Steel(E=144))
s1.addNode(0, 0, fixity='fixed')
s1.addNode(24, 0, fixity='roller')
s1.addNode(42, 0, fixity='roller')
s1.addMember(0, 1)
s1.addMember(2, 1)
def __init__(self, SN, EN, material=ma.Steel(), cross=xs.generalSection()):
self.cross = cross
self.material = material
# assign start and end node properties
self.SN = SN
self.EN = EN
#the axial force
self.axial = 0
def test_Frame(self):
# global stiffness matrix must be symmetric
xs1 = xs.generalSection(A=30, Ix=700)
s1 = sc.Structure(xs1, ma.Steel(E=29000))
s1.addNode(0, 0)
s1.addNode(0, 144)
s1.addNode(144, 144)
s1.addMember(0, 1)
s1.addMember(1, 2)
m1 = s1.members[0]
stiff1 = m1.T.T * m1.kframe * m1.T
v = np.all(stiff1 == stiff1.T)
self.assertEqual(v, True)
m = member.unVec[1]
n = member.unVec[2]
ind = member.trussdof
member.axial = member.axialstiff * np.matrix(
[l, m, -l, -m]) * np.asmatrix(d[ind]).T
return d
import structural_classes as sc
import cross_sections as xs
import materials as ma
import Truss
# Define material
A992 = ma.Steel(E=2e11)
# Define cross section
xs1 = xs.generalSection(A=1e-2, Ix=5e-6)
# define blank structure
# the cross section and material are defaults for the members
# we will add to this later
s1 = Frame(cross=xs1, material=A992)
# Add nodes to the structure
s1.addNode(0, 0, xfix=0, yfix=0, fixity='pin')
s1.addNode(0, 2)
s1.addNode(1.5, 3)
s1.addNode(3, 2)
s1.addNode(3, 0, xfix=0, yfix=0, fixity='pin')
import StructPy.cross_sections as xs
import StructPy.structural_classes as sc
import StructPy.materials as ma
xs1 = xs.generalSection(A=30, Ix=700)
s1 = sc.Structure(xs1, ma.Steel(E=29000))
s1.addNode(0, 0)
s1.addNode(0, 144)
s1.addNode(144, 144)
s1.addMember(0, 1)
s1.addMember(1, 2)
m1 = s1.members[0]
stiff1 = m1.T.T * m1.kframe * m1.T
s1.plot()
xs1 = xs.AISC('W8X48').printProperties()