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Finite Element Implementation of the Exponential Drucker-Prager Plasticity Model for Adhesive Joints

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摘要 This paper deals with the numerical implementation of the exponential Drucker-Parger plasticitymodel in the commercial finite element software,ABAQUS,via user subroutine UMAT for adhesive joint simulations.The influence of hydrostatic pressure on adhesive strength was investigated by a modified Arcan fixture designed particularly to induce a different state of hydrostatic pressure within an adhesive layer.The developed user subroutine UMAT,which utilizes an associated plastic flow during a plastic deformation,can provide a good agreement between the simulations and the experimental data.Better numerical stability at highly positive hydrostatic pressure loads for a very high order of exponential function can also be achieved compared to when a non-associated flow is used.
出处 《Computer Modeling in Engineering & Sciences》 SCIE EI 2023年第6期1765-1778,共14页 工程与科学中的计算机建模(英文)
基金 funded by King Mongkut’s University of Technology North Bangkok.Contract No.KMUTNB-PHD-62-07.
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