ElemStiffElasMatP1Ba.m File Reference

Computation of the element stiffness elasticity matrix for -Lagrange method. The method for numbering the degrees of freedom is local alternate numbering (classical method) More...

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Functions
function Elem =	ElemStiffElasMatP1Ba (q1, q2, q3, area, lambda, mu)
	Computation of the element stiffness elasticity matrix for -Lagrange method. The method for numbering the degrees of freedom is local alternate numbering (classical method)

Detailed Description

Computation of the element stiffness elasticity matrix for -Lagrange method. The method for numbering the degrees of freedom is local alternate numbering (classical method)

Definition in file ElemStiffElasMatP1Ba.m.

Function Documentation

function Elem = ElemStiffElasMatP1Ba	(		q1,
			q2,
			q3,
			area,
			lambda,
			mu
	)

Computation of the element stiffness elasticity matrix for -Lagrange method. The method for numbering the degrees of freedom is local alternate numbering (classical method)

Hooke's matrix

C=[L + 2*M L 0] [ L L + 2*M 0] [ 0 0 M]

Numbering of local points in reference element is

P=[(0, 0), (1, 0), (0, 1)]

Example:

    q1=[0;0];q2=[1;0];q3=[0;1];
    area=1/2.;
    lambda=1.; mu=1.;
    KElem=ElemStiffElasMatP1Ba(q1,q2,q3,area,lambda,mu);

Parameters

q1	array of coordinates of the first point of the triangle
q2	array of coordinates of the second point of the triangle
q3	array of coordinates of the third point of the triangle
area	triangle area
lambda	first Lame coefficient in Hooke's law
mu	second Lame coefficient in Hooke's law

Return values

Elem	element stiffness elasticity matrix, 6-by-6 matrix

Definition at line 17 of file ElemStiffElasMatP1Ba.m.