Abstract
An augmented method as well as mortar-based approach for Isogeometric contact problem was presented in this paper. The contact constrains were examined through a projection to control point quantities, which can effectively improve the smoothness in global contact forces. To alleviate the influence of the normal contact penalty parameter, an augmented treatment was applied to the Isogeometric contact analysis, which can provide essentially exact satisfaction of constraints with finite penalties, and decrease the ill-conditioning of governing equations. The given numerical example and results can demonstrate the robustness and accuracy of mortar-based treatment and the utility of augmented method.
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