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个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职：大连理工大学白俄罗斯国立大学联合学院院长、直属党支部书记
其他任职：辽宁省极地海洋专业技术创新中心主任
性别：男
出生日期：1972-12-30
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：计算力学. 固体力学. 工程力学. 船舶与海洋结构物设计制造. 岩土与环境力学
办公地点：大连理工大学主校区海宇楼(1号实验楼)607室
联系方式：0411-84708683
电子邮箱：jisy@dlut.edu.cn
往复荷载下铁路道砟沉降特性的扩展多面体离散元分析
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论文类型：期刊论文
发表时间：2022-06-30
发表刊物：铁道学报
所属单位：物理学院
期号：11
页面范围：89-95
ISSN号：1001-8360
摘要：Based on the Minkowski Sum method,this paper introduced dilated polyhedral element to describe the irregular geometry of ballast particles and conducted discrete element analysis on the dynamic characteris-tics of ballast material under cyclic loading to study the evolution of the settlement and deformation stiffness of ballast material.The results showed that the accumulative settlement of ballast material under cyclic loading increased significantly at the early stage of deformation and then tended to be stable with the increase of the fre-quency of cyclic loading.Meanwhile,the effective stiffness during the accumulative deformation process of bal-last material also increased continuously and eventually became stable.Thus,this dilated polyhedral element can model the mechanic behaviors of ballast material effectively and reveal its dynamic characteristics under cy-clic loading of train.
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