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Applied Mathematics and Mechanics (English Edition) ›› 2014, Vol. 35 ›› Issue (3): 391-402.doi: https://doi.org/10.1007/s10483-014-1799-8

• 论文 • 上一篇    

Effective numerical approach with complete damage transfer under multi-step loading

赵士洋1 薛璞1,2 彭雄奇3 王琰1   

  1. 1. School of Aeronautics, Northwestern Polytechnical University, Xi’an 710072, P. R. China;
    2. State Key Laboratory of Explosion Science and Technology, Beijing 100081, P. R. China;
    3. School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200030, P. R. China
  • 收稿日期:2013-03-03 修回日期:2013-06-16 出版日期:2014-03-26 发布日期:2014-02-18

Effective numerical approach with complete damage transfer under multi-step loading

 ZHAO Shi-Yang1, XUE Pu1,2, PENG Xiong-Qi3, WANG Yan1   

  1. 1. School of Aeronautics, Northwestern Polytechnical University, Xi’an 710072, P. R. China;
    2. State Key Laboratory of Explosion Science and Technology, Beijing 100081, P. R. China;
    3. School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200030, P. R. China
  • Received:2013-03-03 Revised:2013-06-16 Online:2014-03-26 Published:2014-02-18

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摘要： An effective numerical approach is proposed for structural damage analysis, especially for structures which may be damaged at multiple locations to different extents. The structural damage state is represented by defining a set of field-variable functions, and the degradation of material properties is described. Then, through customization of the commercial finite element software ABAQUS/Standard, the damage state is directly assigned to the integration points of elements, thereby avoiding modification of the finite element model. Afterwards, the damaged structures by ABAQUS/Standard is conducted numerically. Finally, this approach is verified by simulating the growth of delamination for a pre-delaminated composite plate and a composite plate under impact loading, respectively.

关键词: 数据依赖, 核函数, 迭代, 支持向量回归, composite, degradation, failure, finite element analysis

Abstract: An effective numerical approach is proposed for structural damage analysis, especially for structures which may be damaged at multiple locations to different extents. The structural damage state is represented by defining a set of field-variable functions, and the degradation of material properties is described. Then, through customization of the commercial finite element software ABAQUS/Standard, the damage state is directly assigned to the integration points of elements, thereby avoiding modification of the finite element model. Afterwards, the damaged structures by ABAQUS/Standard is conducted numerically. Finally, this approach is verified by simulating the growth of delamination for a pre-delaminated composite plate and a composite plate under impact loading, respectively.

Key words: data-dependent, kernel function, iteration, support vector regression, composite, degradation, failure, finite element analysis

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