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    • 副教授     博士生导师   硕士生导师
    • 性别:男
    • 毕业院校:大连理工大学
    • 学位:博士
    • 所在单位:力学与航空航天学院
    • 学科:车辆工程. 计算力学. 固体力学
    • 办公地点:大连理工大学综合实验2号楼418B房
    • 联系方式:yangxia@dlut.edu.cn
    • 电子邮箱:yangxia@dlut.edu.cn

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    A bond-based peridynamic model considering effects of particle rotation and shear influence coefficient

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    论文类型:期刊论文

    第一作者:Zheng, Guojun

    通讯作者:Shen, GZ (corresponding author), Dalian Univ Technol, Sch Automot Engn, Dalian 116024, Peoples R China.

    合写作者:Shen, Guozhe,Xia, Yang,Hu, Ping

    发表时间:2020-01-15

    发表刊物:INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING

    收录刊物:EI、SCIE

    卷号:121

    期号:1

    页面范围:93-109

    ISSN号:0029-5981

    关键字:bond-based peridynamic model; particle rotation; Poisson's ratio; shear influence coefficient

    摘要:The classical bond-based peridynamic (BPD) model is limited with a fixed Poisson's ratio. To overcome this limitation, an improved BPD model is proposed to analyze the deformation and crack propagation of microelastic brittle materials with emphasis on varying Poisson's ratios. In the proposed model, the bond is subjected to axial and transverse pairwise forces, and the particle rotation angle is added to eliminate the additional bending moment caused by transverse forces, which is a key factor to satisfy the balance of angular momentum exactly. As a result, the bond not only has axial displacement but also has transverse displacement and particle rotation. This extension in the displacement mode overcomes the limitation of the fixed Poisson's ratio in the classical BPD model. The simulation results demonstrate the precision of the improved BPD model and prove its ability to predict deformations and crack propagations.