An Enriched-FEM Technique for Large Frictional Contact Deformation

作者：Khoei Amir Reza^*; Taheri Mousavi S Mohadeseh; Biabanaki S Omid Reza; Anahid Masood

来源：Steel Research International, 2010, 81(9): 1478-1481.

• Extended FEM
• Lagrangian model
• Large deformation
• Contact modeling
• Level set method
• Heaviside enrichment function

An enriched Lagrangian finite element method is presented in modeling large plasticity deformations of contact problems. The technique is used to model contact surface using X-FEM method in large deformations. The contact surfaces are represented independent of the FE mesh and the process is accomplished by integrating enriched elements with a larger number of Gauss points whose position is fixed in the element. The large elasto-plastic deformation formulation is employed within the X-FEM framework to simulate the nonlinear behavior of materials. The interface between two bodies is modeled by using the X-FEM technique and applying the modified level set and Heaviside enrichment functions. Finally, several numerical examples of arbitrary material interfaces are modeled to demonstrate the efficiency of the Lagrangian X-FEM technique in large deformation of plasticity and contact problems.

• 出版日期2010-9