def test_st_bearing_elements_odd_length():
tim0 = ShaftElement(
L=0.25,
idl=0,
odl=0.05,
material=steel,
)
tim1 = ShaftElement(
L=0.25,
idl=0,
odl=0.05,
material=steel,
)
shaft_elm = [tim0, tim1]
disk0 = DiskElement(n=1, m=20, Id=1, Ip=1)
brg0 = ST_BearingElement(
n=0,
kxx=[1e6, 2e6],
cxx=[1e3, 2e3],
is_random=["kxx", "cxx"],
)
brg1 = ST_BearingElement(
n=2,
kxx=[1e6, 2e6, 3e6],
cxx=[1e3, 2e3, 3e3],
is_random=["kxx", "cxx"],
)
with pytest.raises(ValueError) as ex:
ST_Rotor(shaft_elm, [disk0], [brg0, brg1])
assert "not all random bearing elements lists have same length." in str(
ex.value)
def rotor1():
# rotor with 6 shaft elements, 2 disks and 2 random bearings
i_d = 0
o_d = 0.05
n = 6
L = [0.25 for _ in range(n)]
shaft_elem = [ShaftElement(l, i_d, o_d, material=steel) for l in L]
disk0 = DiskElement.from_geometry(n=2,
material=steel,
width=0.07,
i_d=0.05,
o_d=0.28)
disk1 = DiskElement.from_geometry(n=4,
material=steel,
width=0.07,
i_d=0.05,
o_d=0.28)
kxx = [1e6, 2e6]
cxx = [1e3, 2e3]
bearing0 = ST_BearingElement(n=0,
kxx=kxx,
cxx=cxx,
is_random=["kxx", "cxx"])
bearing1 = ST_BearingElement(n=6,
kxx=kxx,
cxx=cxx,
is_random=["kxx", "cxx"])
return ST_Rotor(shaft_elem, [disk0, disk1], [bearing0, bearing1])
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_disk_elements_odd_length():
tim0 = ShaftElement(L=0.25, idl=0, odl=0.05, material=steel)
tim1 = ShaftElement(L=0.25, idl=0, odl=0.05, material=steel)
shaft_elm = [tim0, tim1]
disk0 = ST_DiskElement(n=0, m=[20, 30], Id=1, Ip=1, is_random=["m"])
disk1 = ST_DiskElement(n=2, m=[20, 30, 40], Id=1, Ip=1, is_random=["m"])
with pytest.raises(ValueError) as ex:
ST_Rotor(shaft_elm, [disk0, disk1])
assert "not all random disk elements lists have same length." in str(
ex.value)
def test_st_point_mass_elements_odd_length():
tim0 = ShaftElement(L=0.25, idl=0, odl=0.05, material=steel)
tim1 = ShaftElement(L=0.25, idl=0, odl=0.05, material=steel)
shaft_elm = [tim0, tim1]
disk0 = DiskElement(n=1, m=20, Id=1, Ip=1)
brg0 = BearingElement(n=0, kxx=1e6, cxx=1e3, n_link=3)
brg1 = BearingElement(n=2, kxx=1e6, cxx=1e3, n_link=4)
sup0 = BearingElement(n=3, kxx=1e6, cxx=1e3)
sup1 = BearingElement(n=4, kxx=1e6, cxx=1e3)
pm0 = ST_PointMass(n=3, m=[1, 2], is_random=["m"])
pm1 = ST_PointMass(n=4, m=[1, 2, 3], is_random=["m"])
with pytest.raises(ValueError) as ex:
ST_Rotor(shaft_elm, [disk0], [brg0, brg1, sup0, sup1], [pm0, pm1])
assert "not all random point mass lists have 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)