def test_elements_odd_length():
tim0 = ST_ShaftElement(
L=[1, 1.1],
idl=0,
odl=[0.1, 0.2],
material=steel,
is_random=["L", "odl"],
)
shaft_elm = [tim0, tim0]
disk0 = ST_DiskElement(n=0, m=[20, 30, 40], Id=1, Ip=1, is_random=["m"])
disk1 = ST_DiskElement(n=2, m=[20, 30, 40], Id=1, Ip=1, is_random=["m"])
disks = [disk0, disk1]
brg0 = ST_BearingElement(
n=0,
kxx=[1e6, 2e6],
cxx=[1e3, 2e3],
is_random=["kxx", "cxx"],
)
brg1 = ST_BearingElement(
n=2,
kxx=[1e6, 2e6],
cxx=[1e3, 2e3],
is_random=["kxx", "cxx"],
)
bearings = [brg0, brg1]
with pytest.raises(ValueError) as ex:
ST_Rotor(shaft_elm, disks, bearings)
assert "not all the random elements lists have the same length." in str(
ex.value)
def test_st_shaft_elements_odd_length():
tim0 = ST_ShaftElement(L=[1, 1.1],
idl=0,
odl=[0.1, 0.2],
material=steel,
is_random=["L", "odl"])
tim1 = ST_ShaftElement(
L=[1, 1.1, 1.2],
idl=0,
odl=[0.1, 0.2, 0.3],
material=steel,
is_random=["L", "odl"],
)
shaft_elm = [tim0, tim1]
with pytest.raises(ValueError) as ex:
ST_Rotor(shaft_elm)
assert "not all random shaft elements lists have same length." in str(
ex.value)
def rand_shaft():
E = [209e9, 211e9]
st_steel = ST_Material(name="Steel", rho=7810, E=E, G_s=81.2e9)
elm = ST_ShaftElement(
L=[1.0, 1.1],
idl=[0.01, 0.02],
odl=[0.1, 0.2],
material=st_steel,
is_random=["L", "idl", "odl", "material"],
)
return elm