VUGENS

This problem contains basic test cases for one or more Abaqus elements and features.

This page discusses:

Products Abaqus/Explicit

Elements tested

S4R

Features tested

User subroutine to define the mechanical behavior of a shell section in terms of generalized section quantities. The subroutine returns the section forces and moments as well as the section stiffness matrix of the element.

Problem description

To verify user subroutine VUGENS, the data line input option is used to specify the shell section stiffness and thickness of the shell elements (passed into VUGENS by array PROPS).

ver_prystructdcoup_vugens.inp

S4R elements with user subroutine VUGENS are used to model a pair of surfaces connected by a spot weld using the FASTENER definition. A fixed boundary condition is applied to the nodes of one surface, and concentrated forces are applied to the nodes of the other surface. For comparison purposes, a duplicate pair of surfaces modeled by S4R elements without using user subroutine VUGENS is included to provide a reference solution.

Results and discussion

The verification compares results between models using a general shell section with and without user subroutine VUGENS. In each case, the results were identical.

Input files

Model using S4R elements with user subroutine VUGENS.

User subroutine VUGENS used in ver_prystructdcoup_vugens.inp.