Premium
Processing nonlinear multipoint constraints in the finite element method
Author(s) -
Narayanaswamy O. S.
Publication year - 1985
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/nme.1620210708
Subject(s) - lagrange multiplier , finite element method , nonlinear system , mathematical optimization , constraint (computer aided design) , constraint algorithm , computer science , mathematics , algorithm , engineering , structural engineering , geometry , physics , quantum mechanics
This paper reviews and evaluates two methods for processing nonlinear constraints. Both are based on the Lagrange multiplier technique. However, one of them, the constraint forces method, is often more efficient than the commonly used method of elimination. The two methods are evaluated by applying them to an example problem and comparing corresponding solution times. Guidelines are given for selecting the more efficient method for a given constraint problem.