def convert_springs_to_connectors(assembly):
"""
Converts all single noded springs to connector elements
:param assembly:
:type assembly: ada.Assembly
"""
import numpy as np
from ada import Node
from ada.fem import Bc, Connector, ConnectorSection, FemSet
for p in assembly.get_all_subparts():
for spring in p.fem.springs.values():
n1 = spring.nodes[0]
n2 = Node(n1.p - np.array([0, 0, 10e-3]))
assembly.fem.add_rp(spring.name + "_rp", n2)
fs = FemSet(spring.name + "_bc", [n2], "nset")
assembly.fem.add_set(fs)
assembly.fem.add_bc(Bc(spring.name + "_bc", fs,
[1, 2, 3, 4, 5, 6]))
diag = []
for dof, row in enumerate(spring.stiff):
for j, stiffness in enumerate(row):
if dof == j:
diag.append(stiffness)
con_sec = ConnectorSection(spring.name + "_consec", diag, [])
assembly.fem.add_connector_section(con_sec)
con = Connector(spring.name + "_con", spring.id, n1, n2, "bushing",
con_sec)
assembly.fem.add_connector(con)
p.fem._springs = dict()
p.fem.elements.filter_elements(delete_elem=["SPRING1"])
def get_connector_sections_from_bulk(bulk_str: str, parent: FEM) -> dict[str, ConnectorSection]:
import numpy as np
consecsd = dict()
for m in cards.connector_behaviour.regex.finditer(bulk_str):
d = m.groupdict()
name = d["name"]
comp = int(d["component"])
res = np.fromstring(list_cleanup(d["bulk"]), sep=",", dtype=np.float64)
size = res.size
cols = comp + 1
rows = int(size / cols)
res_ = res.reshape(rows, cols)
consecsd[name] = ConnectorSection(name, [res_], [], metadata=d, parent=parent)
return consecsd
def get_connector_sections_from_bulk(bulk_str, parent):
"""
:param bulk_str:
:param parent:
:return:
"""
consecsd = dict()
for m in AbaCards.connector_behaviour.regex.finditer(bulk_str):
d = m.groupdict()
name = d["name"]
comp = int(d["component"])
res = np.fromstring(list_cleanup(d["bulk"]), sep=",", dtype=np.float64)
size = res.size
cols = comp + 1
rows = int(size / cols)
res_ = res.reshape(rows, cols)
consecsd[name] = ConnectorSection(name, [res_], [], metadata=d)
return consecsd
def add_connector_section(
self, connector_section: ConnectorSection) -> ConnectorSection:
connector_section.parent = self
self.connector_sections[connector_section.name] = connector_section
return connector_section