| 刘敏,李旭.基于内聚力理论的二维二次界面单元在ABAQUS中的UEL程序实现[J].计算力学学报,2019,36(5):693~698 |
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| 基于内聚力理论的二维二次界面单元在ABAQUS中的UEL程序实现 |
| The finite element formulation for a 2D quadratic cohesive element and its program implementation of UEL in ABAQUS |
| 投稿时间：2018-08-05 修订日期：2018-10-11 |
| DOI：10.7511/jslx20180805001 |
| 中文关键词: 内聚力模型 界面单元 有限元法 ABAQUS UEL |
| 英文关键词:cohesive zone model interface element finite element method ABAQUS UEL |
| 基金项目:国家自然科学基金（11502181）；中央高校基本科研业务费专项资金（2017IB009）；教育部博士点基金（20130143120005）资助项目. |
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| 中文摘要: |
| 依据有限元理论，结合内聚力模型法则，推导出二维二次粘结界面单元在大位移情况下的数值格式，得到用形函数表示的单元位移模式、载荷向量和刚度矩阵，并进行了离散化。基于ABAQUS软件的自定义扩展模块，编制了相应的用户单元子程序UEL，通过数值算例验证了该程序的准确性和有效性。这一成果能为在ABAQUS软件中开展相关数值研究，以及开发其他类型的内聚力界面有限单元提供思路和参考。 |
| 英文摘要: |
| Based on the standard finite element theory,and by employing the intrinsic cohesive zone modeling approach,a new 2D quadratic interface element is formulated to take into account large displacements.The displacement mode,force vector and stiffness matrix represented by shape functions have been obtained.Correspondingly,this element is programmed as a UEL subroutine in ABAQUS software.Several computational examples are investigated to verify the element implementation,and numerical results show its validity and accuracy.This can provide references for conducting simulation works or developing other interface element related to cohesive zone model in ABAQUS package. |
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