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Hello,
I would like to know how contact elements are different from " general "ie non contact finite elements.
Also I would like to know how Lagrange multiplier method is used in contcat analysis.
My understanding of the Lagrange multiplier is like this: when we have to impose a constraint equation
[C][D]=[Q] as constraint between DOFs, we incude a term Y*{[[C][D]-[Q]} where Y is the Lagrange multiplier ,in the potential energy functional and minimize the functional to get the algebraic equations.
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