Initial checkin

1 files changed, 91 insertions, 0 deletions

diff --git a/Connections/Shear/Finplate/ISection.py b/Connections/Shear/Finplate/ISection.py
new file mode 100644
index 0000000..47ed464
--- /dev/null
+++ b/Connections/Shear/Finplate/ISection.py
@@ -0,0 +1,91 @@
+'''
+Created on 29-Nov-2014
+
+@author: deepa
+'''
+import numpy
+from ModelUtils import *
+
+
+class ISection(object):
+    '''
+                              ^ v
+                              |                     
+            c2                .                c1                            
+     ---    +-----------------|-----------------+     ---
+      ^     |                 .                 |      ^
+      | T   |                 |                 |      |
+      v     |                 .                 |      |  
+     ---    +------------+    |    +------------+      |
+            b2         a2|         | a1         b1     |
+                         |    t    |                   |
+                         |<------->|                   |
+                         |    |    |                   |
+                         |    .    |                   |D
+                         |    |O   |                   |
+    -- -- -- -- -- -- -- -- --.-- -- -- -- -- -- -- -- |-- -- -> u
+                         |    |    |                   |
+                         |    .    |                   |
+                         |    |    |                   |
+                         |    .    |                   |
+             b3        a3|    |    |a4          b4     |
+             +-----------+    .    +------------+      |
+             |                |                 |      |
+             |                .                 |      |
+             |                |                 |      v
+             +----------------.-----------------+     ---
+             c3               B                 c4       
+             |<-------------------------------->| 
+                                                    
+    '''  
+    def __init__(self, B, T, D, t, R1, R2, alpha, length):        
+        self.B = B
+        self.T = T 
+        self.D = D
+        self.t = t
+        self.R1 = R1
+        self.R2 = R2
+        self.alpha = alpha
+        self.length = length
+        self.secOrigin = numpy.array([0, 0, 0])
+        self.uDir = numpy.array([1.0, 0, 0])
+        self.wDir = numpy.array([0.0, 0, 1.0])
+        self.computeParams()
+    
+    def place(self, secOrigin, uDir, wDir):
+        self.secOrigin = secOrigin
+        self.uDir = uDir
+        self.wDir = wDir        
+        self.computeParams()
+        
+    def computeParams(self):
+        self.vDir = numpy.cross(self.wDir, self.uDir)
+        self.a1 = self.secOrigin + (self.t/2.0) * self.uDir + ((self.D/2.0) - self.T) * self.vDir
+        self.b1 = self.secOrigin + (self.B/2.0) * self.uDir + ((self.D/2.0) - self.T) * self.vDir   
+        self.c1 = self.secOrigin + (self.B/2.0) * self.uDir + (self.D/2.0) * self.vDir
+        self.a2 = self.secOrigin + (-self.t/2.0) * self.uDir + ((self.D/2.0) - self.T) * self.vDir
+        self.b2 = self.secOrigin + (-self.B/2.0) * self.uDir + ((self.D/2.0) - self.T) * self.vDir   
+        self.c2 = self.secOrigin + (-self.B/2.0) * self.uDir + (self.D/2.0) * self.vDir
+        self.a3 = self.secOrigin + (-self.t/2.0) * self.uDir + -((self.D/2.0) - self.T) * self.vDir
+        self.b3 = self.secOrigin + (-self.B/2.0) * self.uDir + -((self.D/2.0) - self.T) * self.vDir   
+        self.c3 = self.secOrigin + (-self.B/2.0) * self.uDir + -(self.D/2.0) * self.vDir
+        self.a4 = self.secOrigin + (self.t/2.0) * self.uDir + -((self.D/2.0) - self.T) * self.vDir
+        self.b4 = self.secOrigin + (self.B/2.0) * self.uDir + -((self.D/2.0) - self.T) * self.vDir   
+        self.c4 = self.secOrigin + (self.B/2.0) * self.uDir + -(self.D/2.0) * self.vDir
+        self.points = [self.a1, self.b1, self.c1, 
+                       self.c2, self.b2, self.a2,
+                       self.a3, self.b3, self.c3,
+                       self.c4, self.b4, self.a4]
+        #self.points = [[0, 0, 0], [1, 0, 0], [1, 1, 0], [0, 1, 0]]  
+        
+    def createModel(self):
+        edges = makeEdgesFromPoints(self.points)
+        wire = makeWireFromEdges(edges)
+        aFace = makeFaceFromWire(wire)
+        extrudeDir = self.length * self.wDir # extrudeDir is a numpy array
+        prism =  makePrismFromFace(aFace, extrudeDir)
+        
+        return prism
+    
+        
+        
\ No newline at end of file