def add_section(self, section: FemSection) -> FemSection:
section.parent = self
if section.elset.parent is None:
if section.elset.name in self.elsets.keys():
fs = self.elsets[section.elset.name]
else:
fs = self.sets.add(section.elset)
if fs != section.elset:
logging.info(
f'Element set "{section.elset}" is replaced by {fs}')
section.elset = fs
if section.material.parent is None and self.parent is not None:
self.parent.add_material(section.material)
self.sections.add(section)
return section
def get_shell_section(m, sh_name, fem: "FEM", a: "Assembly"):
d = m.groupdict()
name = next(sh_name)
elset = fem.sets.get_elset_from_name(d["elset"])
material = d["material"]
mat = a.materials.get_by_name(material)
thickness = float(d["t"])
offset = d["offset"]
if offset is not None:
# TODO: update this with the latest eccentricity class
logging.warning("Offset for Shell elements is not yet evaluated")
for el in elset.members:
el.eccentricity = Eccentricity(sh_ecc_vector=offset)
int_points = d["int_points"]
metadata = dict(controls=d["controls"])
return FemSection(
name=name,
sec_type=ElemType.SHELL,
thickness=thickness,
elset=elset,
material=mat,
int_points=int_points,
parent=fem,
metadata=metadata,
)
def create_fem_elem_from_obj(self, obj, el_type=None) -> Elem:
"""Converts structural object to FEM elements. Currently only BEAM is supported"""
from ada.fem.shapes import ElemType
if type(obj) is not Beam:
raise NotImplementedError(
f'Object type "{type(obj)}" is not yet supported')
el_type = ElemType.LINE if el_type is None else el_type
res = self.nodes.add(obj.n1)
if res is not None:
obj.n1 = res
res = self.nodes.add(obj.n2)
if res is not None:
obj.n2 = res
elem = self.add_elem(Elem(None, [obj.n1, obj.n2], el_type))
femset = self.add_set(
FemSet(f"{obj.name}_set", [elem], FemSet.TYPES.ELSET))
self.add_section(
FemSection(
f"d{obj.name}_sec",
ElemType.LINE,
femset,
obj.material,
obj.section,
obj.ori[1],
))
return elem
def grab_beam(match):
d = match.groupdict()
elset = fem.elsets[d["elset"]]
name = d["sec_name"] if d["sec_name"] is not None else elset.name
profile = d["profile_name"] if d[
"profile_name"] is not None else elset.name
ass = fem.parent.get_assembly()
material = ass.materials.get_by_name(d["material"])
# material = parent.parent.materials.get_by_name(d['material'])
temperature = d["temperature"]
section_type = d["sec_type"]
geo_props = d["line1"]
sec = interpret_section(profile, section_type, geo_props)
beam_y = [
float(x.strip()) for x in d["line2"].split(",") if x.strip() != ""
]
metadata = dict(
temperature=temperature,
profile=profile.strip(),
section_type=section_type,
line1=geo_props,
)
res = fem.parent.sections.add(sec)
if res is not None:
sec = res
return FemSection(
name.strip(),
sec_type="beam",
elset=elset,
section=sec,
local_y=beam_y,
material=material,
metadata=metadata,
parent=fem,
)
def get_beam_elements(self, li, order):
"""
:param li:
:param order:
:return:
"""
import gmsh
from ada.core.utils import make_name_fem_ready
model = gmsh.model
bm = self._bm_map[li]
segments = model.mesh.getElements(1, li)[1][0]
fem_nodes = model.mesh.getElements(1, li)[2][0]
elem_types, elem_tags, elem_node_tags = gmsh.model.mesh.getElements(
1, li)
face, dim, morder, numv, parv, _ = gmsh.model.mesh.getElementProperties(
elem_types[0])
set_name = make_name_fem_ready(f"el{bm.name}_set")
fem = self._part.fem
def make_elem(j):
no = []
for i in range(numv):
p1 = fem_nodes[numv * j + i]
p1_co = gmsh.model.mesh.getNode(p1)[0]
no.append(Node(p1_co, p1))
if len(no) == 3:
myorder = [0, 2, 1]
no = [no[i] for i in myorder]
bm_el_type = "B31" if order == 1 else "B32"
return Elem(segments[j], no, bm_el_type, parent=self._part.fem)
elements = list(map(make_elem, range(len(segments))))
fem_sec_name = make_name_fem_ready(f"d{bm.name}_sec")
if set_name in fem.elsets.keys():
fem_set = fem.elsets[set_name]
for el in elements:
el.fem_sec = fem_set.members[0].fem_sec
fem_set.add_members(elements)
else:
fem_set = FemSet(set_name, elements, "elset", parent=fem)
fem.sets.add(fem_set)
fem.add_section(
FemSection(
fem_sec_name,
"beam",
fem_set,
bm.material,
bm.section,
bm.ori[2],
metadata=dict(beam=bm, numel=len(elements)),
))
return elements
def grab_solid(m_in):
name = m_in.group(1) if m_in.group(1) is not None else next(secnames)
elset = m_in.group(2)
material = m_in.group(3)
return FemSection(
name=name,
sec_type="solid",
elset=elset,
material=material,
parent=fem,
)
def grab_solid(m_in):
name = m_in.group(1) if m_in.group(1) is not None else next(secnames)
elset = m_in.group(2)
material = m_in.group(3)
mat = a.materials.get_by_name(material)
return FemSection(
name=name,
sec_type=ElemType.SOLID,
elset=elset,
material=mat,
parent=fem,
)
def test_negative_sec_contained(self):
# A minor change in section box thickness
sec = Section("myBG", from_str="BG800x400x20x40")
mat = Material("my_mat")
bm = Beam("my_beam", (0, 0, 0), (1, 0, 0), sec, mat)
elem = Elem(1, [bm.n1, bm.n2], "B31")
fem_set = FemSet("my_set", [elem], "elset")
fem_sec = FemSection("my_sec", "beam", fem_set, mat, sec)
p = get_fsec_bm_collection()
self.assertFalse(fem_sec in p.fem.sections)
def test_negative_sec_contained(self):
# A minor change in section box thickness
sec = Section('myBG', from_str='BG800x400x20x40')
mat = Material('my_mat')
bm = Beam('my_beam', (0, 0, 0), (1, 0, 0), sec, mat)
elem = Elem(1, [bm.n1, bm.n2], 'B31')
fem_set = FemSet('my_set', [elem], 'elset')
fem_sec = FemSection('my_sec', 'beam', fem_set, mat, sec)
p = get_fsec_bm_collection()
self.assertFalse(fem_sec in p.fem.sections)
def get_shell_elements(self, sh, order):
"""
:param sh:
:param order:
:return:
"""
import gmsh
pl = self._pl_map[sh]
assert isinstance(pl, Plate)
try:
get_elems = gmsh.model.mesh.getElements(2, sh)
segments = get_elems[1][0]
except BaseException as e:
logging.debug(e)
return []
fem_nodes = gmsh.model.mesh.getElements(2, sh)[2][0]
elemTypes, elemTags, elemNodeTags = gmsh.model.mesh.getElements(2, sh)
face, dim, morder, numv, parv, _ = gmsh.model.mesh.getElementProperties(
elemTypes[0])
elem_type = gmsh_map[face]
def make_elem(j):
el_id = segments[j]
nonlocal elem_type
nonlocal numv
nonlocal fem_nodes
no = []
for i in range(numv):
p1 = fem_nodes[numv * j + i]
p1_co = gmsh.model.mesh.getNode(p1)[0]
no.append(Node(p1_co, p1))
return Elem(el_id, no, elem_type, parent=self._part.fem)
elements = list(map(make_elem, range(len(segments))))
femset = FemSet(f"el{pl.name}_set", elements, "elset")
self._part.fem.add_set(femset)
self._part.fem.add_section(
FemSection(
f"sh{pl.name}_sec",
"shell",
femset,
pl.material,
local_z=pl.n,
thickness=pl.t,
int_points=5,
metadata=dict(beam=pl, numel=len(elements)),
))
return elements
def test_negative_contained_shell_(part_with_shell):
# Testing equal operator for change in element type
mat = Material("my_mat")
elem = Elem(
1,
[Node((0, 0, 0)),
Node((1, 0, 0)),
Node((1, 1, 0)),
Node((0, 1, 0))], "quad")
fem_set = FemSet("my_set", [elem], "elset")
fem_sec = FemSection("my_sec", "shell", fem_set, mat, thickness=0.01)
assert fem_sec not in part_with_shell.fem.sections
def test_negative_mat_contained(self):
# A minor change in material property (S420 instead of S355)
sec = Section("myBG", from_str="BG800x400x30x40")
mat = Material("my_mat", CarbonSteel("S420"))
bm = Beam("my_beam", (0, 0, 0), (1, 0, 0), sec, mat)
elem = Elem(1, [bm.n1, bm.n2], "B31")
fem_set = FemSet("my_set", [elem], "elset")
fem_sec = FemSection("my_sec", "beam", fem_set, mat, sec)
p = get_fsec_bm_collection()
self.assertFalse(fem_sec in p.fem.sections)
def test_negative_mat_contained(self):
# A minor change in material property (S420 instead of S355)
sec = Section('myBG', from_str='BG800x400x30x40')
mat = Material('my_mat', CarbonSteel('S420'))
bm = Beam('my_beam', (0, 0, 0), (1, 0, 0), sec, mat)
elem = Elem(1, [bm.n1, bm.n2], 'B31')
fem_set = FemSet('my_set', [elem], 'elset')
fem_sec = FemSection('my_sec', 'beam', fem_set, mat, sec)
p = get_fsec_bm_collection()
self.assertFalse(fem_sec in p.fem.sections)
def part_with_beam():
sec = Section("myIPE", from_str="BG800x400x30x40")
mat = Material("my_mat")
bm = Beam("my_beam", (0, 0, 0), (1, 0, 0), sec, mat)
elem = Elem(1, [bm.n1, bm.n2], "line")
p = Part("my_part") / bm
fem_set = p.fem.sets.add(FemSet("my_set", [elem]))
p.fem.sections.add(
FemSection("my_sec", "line", fem_set, mat, sec, local_z=(0, 0, 1)))
p.fem.elements.add(elem)
return p
def test_negative_contained_shell(self):
# Testing equal operator for different shell thickness
mat = Material('my_mat')
elem = Elem(1, [
Node((0, 0, 0)),
Node((1, 0, 0)),
Node((1, 1, 0)),
Node((0, 1, 0))
], 'S4R')
fem_set = FemSet('my_set', [elem], 'elset')
fem_sec = FemSection('my_sec', 'shell', fem_set, mat, thickness=0.02)
p = get_fsec_sh_collection()
self.assertFalse(fem_sec in p.fem.sections)
def test_negative_contained_shell_(self):
# Testing equal operator for change in element type
mat = Material("my_mat")
elem = Elem(1, [
Node((0, 0, 0)),
Node((1, 0, 0)),
Node((1, 1, 0)),
Node((0, 1, 0))
], "S4")
fem_set = FemSet("my_set", [elem], "elset")
fem_sec = FemSection("my_sec", "shell", fem_set, mat, thickness=0.01)
p = get_fsec_sh_collection()
self.assertFalse(fem_sec in p.fem.sections)
def get_beam_elements(self, li, order):
"""
:param li:
:param order:
:return:
"""
model = gmsh.model
bm = self._bm_map[li]
segments = model.mesh.getElements(1, li)[1][0]
fem_nodes = model.mesh.getElements(1, li)[2][0]
elem_types, elem_tags, elem_node_tags = gmsh.model.mesh.getElements(
1, li)
face, dim, morder, numv, parv, _ = gmsh.model.mesh.getElementProperties(
elem_types[0])
def make_elem(j):
no = []
for i in range(numv):
p1 = fem_nodes[numv * j + i]
p1_co = gmsh.model.mesh.getNode(p1)[0]
no.append(Node(p1_co, p1))
if len(no) == 3:
myorder = [0, 2, 1]
no = [no[i] for i in myorder]
bm_el_type = "B31" if order == 1 else "B32"
return Elem(segments[j], no, bm_el_type, parent=self._part.fem)
elements = list(map(make_elem, range(len(segments))))
femset = FemSet(f"el{bm.name}_set",
elements,
"elset",
parent=self._part.fem)
self._part.fem.sets.add(femset)
self._part.fem.add_section(
FemSection(
f"d{bm.name}_sec",
"beam",
femset,
bm.material,
bm.section,
bm.ori[2],
metadata=dict(beam=bm, numel=len(elements)),
))
return elements
def test_negative_sec_contained(part_with_beam):
# A minor change in section box thickness
sec = Section("myBG", from_str="BG800x400x20x40")
mat = Material("my_mat")
bm = Beam("my_beam", (0, 0, 0), (1, 0, 0), sec, mat)
elem = Elem(1, [bm.n1, bm.n2], "line")
fem_set = FemSet("my_set", [elem], "elset")
fem_sec = FemSection("my_sec",
"line",
fem_set,
mat,
sec,
local_z=(0, 0, 1))
assert fem_sec not in part_with_beam.fem.sections
def read_line_section(elem: Elem, fem: FEM, mat: Material, geono, d, lcsysd,
hinges_global, eccentricities):
transno = str_to_int(d["transno"])
sec = fem.parent.sections.get_by_id(geono)
n1, n2 = elem.nodes
v = n2.p - n1.p
if vector_length(v) == 0.0:
xvec = [1, 0, 0]
else:
xvec = unit_vector(v)
zvec = lcsysd[transno]
crossed = np.cross(zvec, xvec)
ma = max(abs(crossed))
yvec = tuple([roundoff(x / ma, 3) for x in crossed])
fix_data = str_to_int(d["fixno"])
ecc_data = str_to_int(d["eccno"])
members = None
if d["members"] is not None:
members = [
str_to_int(x) for x in d["members"].replace("\n", " ").split()
]
if fix_data == -1:
add_hinge_prop_to_elem(elem, members, hinges_global, xvec, yvec)
if ecc_data == -1:
add_ecc_to_elem(elem, members, eccentricities, fix_data)
fem_set = FemSet(sec.name, [elem],
"elset",
metadata=dict(internal=True),
parent=fem)
fem.sets.add(fem_set, append_suffix_on_exist=True)
fem_sec = FemSection(
sec_id=geono,
name=sec.name,
sec_type=ElemType.LINE,
elset=fem_set,
section=sec,
local_z=zvec,
local_y=yvec,
material=mat,
parent=fem,
)
return fem_sec
def read_shell_section(elem: Elem, fem: FEM, mat: Material, elno, thicknesses,
geono):
sec_name = f"sh{elno}"
fem_set = FemSet(sec_name, [elem],
"elset",
parent=fem,
metadata=dict(internal=True))
fem.sets.add(fem_set)
fem_sec = FemSection(
name=sec_name,
sec_type=ElemType.SHELL,
thickness=roundoff(thicknesses[geono]),
elset=fem_set,
material=mat,
parent=fem,
)
return fem_sec
def part_with_shell():
p = Part("my_part")
mat = Material("my_mat")
elem = Elem(
1,
[Node((0, 0, 0)),
Node((1, 0, 0)),
Node((1, 1, 0)),
Node((0, 1, 0))], "quad")
fem_set = FemSet("my_set", [elem], "elset")
fem_sec = FemSection("my_sec", "shell", fem_set, mat, thickness=0.01)
for n in elem.nodes:
p.fem.nodes.add(n)
p.fem.elements.add(elem)
p.fem.sets.add(fem_set)
p.fem.sections.add(fem_sec)
return p
def get_fsec_sh_collection():
p = Part('my_part')
mat = Material('my_mat')
elem = Elem(
1,
[Node((0, 0, 0)),
Node((1, 0, 0)),
Node((1, 1, 0)),
Node((0, 1, 0))], 'S4R')
fem_set = FemSet('my_set', [elem], 'elset')
fem_sec = FemSection('my_sec', 'shell', fem_set, mat, thickness=0.01)
for n in elem.nodes:
p.fem.nodes.add(n)
p.fem.elements.add(elem)
p.fem.sets.add(fem_set)
p.fem.sections.add(fem_sec)
return p
def test_negative_mat_contained(part_with_beam):
# A minor change in material property (S420 instead of S355)
sec = Section("myBG", from_str="BG800x400x30x40")
mat = Material("my_mat", CarbonSteel("S420"))
bm = Beam("my_beam", (0, 0, 0), (1, 0, 0), sec, mat)
elem = Elem(1, [bm.n1, bm.n2], "line")
fem_set = FemSet("my_set", [elem], "elset")
fem_sec = FemSection("my_sec",
"line",
fem_set,
mat,
sec,
local_z=(0, 0, 1))
assert fem_sec not in part_with_beam.fem.sections
def add_shell_section(
set_name,
fem_sec_name,
normal,
thickness,
elements,
model_obj: Union[Beam, Plate, Pipe, Shape],
fem: FEM,
is_rigid=False,
):
fem_set = FemSet(set_name, elements, FemSet.TYPES.ELSET)
props = dict(local_z=normal,
thickness=thickness,
int_points=5,
is_rigid=is_rigid)
fem_sec = FemSection(fem_sec_name, ElemType.SHELL, fem_set,
model_obj.material, **props)
add_sec_to_fem(fem, fem_sec, fem_set)
def get_so_sections(model: gmsh.model, solid_object: Beam, gmsh_data: GmshData,
fem: FEM):
tags = []
for dim, ent in gmsh_data.entities:
_, tag, _ = model.mesh.getElements(3, ent)
tags += tag
elements = [
fem.elements.from_id(elid) for elid in chain.from_iterable(tags)
]
set_name = make_name_fem_ready(f"el{solid_object.name}_so")
fem_sec_name = make_name_fem_ready(f"d{solid_object.name}_so")
fem_set = FemSet(set_name, elements, FemSet.TYPES.ELSET, parent=fem)
fem_sec = FemSection(fem_sec_name, ElemType.SOLID, fem_set,
solid_object.material)
add_sec_to_fem(fem, fem_sec, fem_set)
def get_fsec_bm_collection():
sec = Section("myIPE", from_str="BG800x400x30x40")
mat = Material("my_mat")
p = Part("my_part")
bm = Beam("my_beam", (0, 0, 0), (1, 0, 0), sec, mat)
elem = Elem(1, [bm.n1, bm.n2], "B31")
fem_set = FemSet("my_set", [elem], "elset")
fem_sec = FemSection("my_sec",
"beam",
fem_set,
mat,
sec,
local_z=(0, 0, 1))
p.add_beam(bm)
p.fem.elements.add(elem)
p.fem.sets.add(fem_set)
p.fem.sections.add(fem_sec)
return p
def get_fsec_bm_collection():
sec = Section('myIPE', from_str='BG800x400x30x40')
mat = Material('my_mat')
p = Part('my_part')
bm = Beam('my_beam', (0, 0, 0), (1, 0, 0), sec, mat)
elem = Elem(1, [bm.n1, bm.n2], 'B31')
fem_set = FemSet('my_set', [elem], 'elset')
fem_sec = FemSection('my_sec',
'beam',
fem_set,
mat,
sec,
local_z=(0, 0, 1))
p.add_beam(bm)
p.fem.elements.add(elem)
p.fem.sets.add(fem_set)
p.fem.sections.add(fem_sec)
return p
def grab_shell(m):
d = m.groupdict()
name = d["name"] if d["name"] is not None else next(shname)
elset = fem.sets.get_elset_from_name(d["elset"])
material = d["material"]
thickness = float(d["t"])
offset = d["offset"]
int_points = d["int_points"]
metadata = dict(controls=d["controls"])
return FemSection(
name=name,
sec_type="shell",
thickness=thickness,
elset=elset,
material=material,
int_points=int_points,
offset=offset,
parent=fem,
metadata=metadata,
)
def get_bm_sections(model: gmsh.model, beam: Beam, gmsh_data, fem: FEM):
from ada.core.vector_utils import vector_length
tags = []
for dim, ent in gmsh_data.entities:
_, tag, _ = model.mesh.getElements(1, ent)
tags += tag
elements = [
fem.elements.from_id(elid) for elid in chain.from_iterable(tags)
]
set_name = make_name_fem_ready(f"el{beam.name}_set_bm")
fem_sec_name = make_name_fem_ready(f"d{beam.name}_sec_bm")
fem_set = FemSet(set_name, elements, FemSet.TYPES.ELSET, parent=fem)
fem_sec = FemSection(fem_sec_name,
ElemType.LINE,
fem_set,
beam.material,
beam.section,
beam.ori[2],
refs=[beam])
add_sec_to_fem(fem, fem_sec, fem_set)
if beam.hinge_prop is None:
return
end1_p = beam.hinge_prop.end1.concept_node.p if beam.hinge_prop.end1 is not None else None
end2_p = beam.hinge_prop.end2.concept_node.p if beam.hinge_prop.end2 is not None else None
if beam.hinge_prop is not None:
for el in elements:
n1 = el.nodes[0]
n2 = el.nodes[-1]
el.hinge_prop = beam.hinge_prop
if beam.hinge_prop.end1 is not None and vector_length(end1_p -
n1.p) == 0.0:
el.hinge_prop.end1.fem_node = n1
if beam.hinge_prop.end2 is not None and vector_length(end2_p -
n2.p) == 0.0:
el.hinge_prop.end2.fem_node = n2
def create_sconcept_str(fem_sec: FemSection) -> Tuple[str, str, str]:
sconcept_str = ""
# Give concept relationship based on inputted values
beams = [x for x in fem_sec.refs if type(x) is Beam]
if len(beams) != 1:
raise ValueError("A FemSection cannot be sourced from multiple beams")
beam = beams[0]
fem_sec.metadata["ircon"] = next(concept_ircon)
bm_name = make_name_fem_ready(beam.name, no_dot=True)
tdsconc_str = write_ff(
"TDSCONC",
[(4, fem_sec.metadata["ircon"], 100 + len(bm_name), 0), (bm_name, )],
)
sconcept_str += write_ff("SCONCEPT", [(8, next(concept), 7, 0),
(0, 1, 0, 2)])
sconc_ref = next(concept)
sconcept_str += write_ff("SCONCEPT", [(5, sconc_ref, 2, 4), (1, )])
elids: List[tuple] = []
i = 0
numel = len(beam.elem_refs)
elid_bulk = [numel]
for el in fem_sec.elset.members:
if i == 3:
elids.append(tuple(elid_bulk))
elid_bulk = []
i = -1
elid_bulk.append(el.id)
i += 1
if len(elid_bulk) != 0:
elids.append(tuple(elid_bulk))
mesh_args = [(5 + numel, sconc_ref, 1, 2)] + elids
scon_mesh = write_ff("SCONMESH", mesh_args)
return tdsconc_str, sconcept_str, scon_mesh
