def make_structure():
xs1 = xs.Rectangle(2, 2)
A992 = ma.A992()
s1 = Truss.Truss(cross=xs1, material=A992)
s1.addNode(0, 0, fixity='pin')
s1.addNode(1, 1)
s1.addNode(2, 0, fixity='roller')
s1.addMember(0, 1)
s1.addMember(1, 2)
s1.addMember(2, 0)
return (s1, xs1)
def setUp(self):
#Truss
xs1 = xs.Rectangle(2, 2)
A992 = ma.A992()
s1 = Truss.Truss(cross=xs1, material=A992)
s1.addNode(0, 0, fixity='pin')
s1.addNode(1, 1)
s1.addNode(2, 0, fixity='roller')
s1.addMember(0, 1)
s1.addMember(1, 2)
s1.addMember(2, 0)
self.s1 = s1
self.xs1 = xs1
def test_Truss(self): xs1 = xs.generalSection(A=1.2) ma1 = ma.Custom(E=30*10**6, fy=60) #psi # Example 6.2.4 T1 = Truss.Truss(cross=xs1,material=ma1) # Make nodes n1 = T1.addNode(0,-180) n2 = T1.addNode(0,0) n3 = T1.addNode(120,0,fixity='pin') n4 = T1.addNode(120,-180,fixity='wallslider') m1 = T1.addMember(0,3) m2 = T1.addMember(1,2) m3 = T1.addMember(1,0) m4 = T1.addMember(2,3) m5 = T1.addMember(0,2) m6 = T1.addMember(1,3) length = math.sqrt(120**2+180**2) self.assertEqual(m1.length, 120) self.assertEqual(m2.length, 120) self.assertEqual(m3.length, 180) self.assertEqual(m4.length, 180) self.assertEqual(m5.length, length) self.assertEqual(m6.length, length) self.assertEqual(m1.unVec[0],1) self.assertEqual(m1.unVec[1],0) loading = np.array([0,0,0,-4000,0,0,0,0]) T1.directStiffness(loading) self.assertAlmostEqual(m1.axial[0,0],1333 + 1/3) self.assertAlmostEqual(m2.axial[0,0], - 1333 - 1/3) self.assertAlmostEqual(m3.axial[0,0], 2000) self.assertAlmostEqual(m4.axial[0,0], -2000) self.assertAlmostEqual(m5.axial[0,0], -2403.7008503093257) self.assertAlmostEqual(m6.axial[0,0], 2403.7008503093257)
import StructPy.Truss as tr
import StructPy.materials as ma
import math
# UNITS: KIPS, INCHES
# Define material
A992 = ma.Custom(E=29000,fy=46)
# Define cross section
#xs1 = xs.IBeam(2, 2, 0.1, 0.1)
#xs1 = xs.AISC("HSS8X8X5/16")
xs1 = xs.AISC("HSS6.000X0.500")
# define blank structure
# we will add to this later
s1 = tr.Truss(cross=xs1, material=A992)
# Add nodes to the structure
# bottom chord
s1.addNode(0, 0, fixity='pin')
s1.addNode(5*12, 0)
s1.addNode(10*12, 0)
s1.addNode(15*12, 0)
s1.addNode(20*12, 0)
s1.addNode(25*12, 0)
s1.addNode(30*12, 0, fixity='pin')
#top chord
s1.addNode(5*12, 12*(4))
s1.addNode(10*12, 12*(4))
s1.addNode(15*12, 12*(4))
import StructPy.cross_sections as xs
import StructPy.structural_classes as sc
import StructPy.materials as ma
import StructPy.Truss as Truss
# Define material
A992 = ma.A992()
# Define cross section
xs1 = xs.generalSection(A=1)
# define blank structure
# the cross section and material are defaults for the members
# we will add to this later
s1 = Truss.Truss(cross=xs1, material=A992)
# Add nodes to the structure
s1.addNode(0, 0, fixity='pin')
s1.addNode(1, 1)
s1.addNode(2, 0, fixity='roller')
# Add members to the structure
s1.addMember(0, 1)
s1.addMember(1, 2)
s1.addMember(0, 2)
s1.plot()
Forces = np.matrix('0; 0; 1000; 1000; 0; 0')
disp = s1.directStiffness(Forces)
s1.plotDeformation(nfig=1, mag=1)