PPT Slide

N0 = r

N1 = s

N2 = t

N3 = 1.0-r-s-t = u

shape->at(0) = r

shape->at(1) = s

shape->at(2) = t

shape->at(3) = u

Tetrahedron T4 Implementation

*T4Shape::shape_functions

dN0/dr= 1.0

dN1/dr= 0.0

dN2/dr= 0.0

dN3/dr= -1.0

deriv->at(0,0) = 1.0

deriv->at(0,1) = 0.0

deriv->at(0,2) = 0.0

deriv->at(0,3) = -1.0

*T4Shape::shape_derivatives

etc.