4

4.3 PLANE STRESS TRIANGLE NO.3 WITH 6 NODES

This is a simple, triangular plane stress element with complete square shape functions. Pay attention to edge loads, cf. chapter 3.4.

Input:

CAD (see chapter 2.7.2): 1-4-2-5-3-6-1

Z88I1.TXT

> KFLAG for cartesian (0) or polar coordinates (1)

> 2 degrees of freedom for each node

> Element type is 3

> 6 nodes per element

> Cross-section parameter QPARA is the element thickness

Z88I3.TXT

> Integration order INTORD: any order, has no influence

> KFLAG = 0: Calculation of SIGXX, SIGYY and TAUXY

> KFLAG = 1: Additional calculation of SIGRR, SIGTT and TAURT

> Reduced stress flag ISFLAG:

0 = no calculation of reduced stresses

1 = von Mises stresses

Results:

Displacements into X and Y

Stresses: The stresses are calculated in the element's center of gravity. The coordinates of the center of gravity are thus printed. For KFLAG = 1 the radial stresses SIGRR, the tangential stresses SIGTT and the accompanying shear stresses SIGRT are computed additionally (makes only sense if a rotational-symmetric structure is available). For easier orientation the respective radiuses and angles of the center of gravity are printed. Optional von Mises stresses in the center of gravity.

Nodal forces in X and Y for each element and each node.