非连续变形计算力学模型的粘弹性分析方法Ⅱ:算例分析  

Viscoelastic analysis method of discontinuous deformation computational mechanics model Ⅱ: numerical analyses

作　　者：黎勇 栾茂田[1] 冯夏庭[2] 王泳嘉[1] 叶祥记[1] 

机构地区：[1]大连理工大学土木水利学院 [2]东北大学资源与土木工程学院,辽宁沈阳110006

出　　处：《计算力学学报》2004年第4期448-454,共7页Chinese Journal of Computational Mechanics

基　　金：国家自然科学基金(10172022);大连理工大学青年教师培养基金;国家重点基础研究发展规划(2002CB412708);教育部优秀青年教师奖励计划资助项目.

摘　　要：应用作者们所提出的非连续变形计算力学模型粘弹性分析方法对具体的多体系统在动力外荷载作用下的响应进行了数值模拟,探讨了系统中物体的粘性阻尼对整个系统的变形、应力和接触应力等的影响。与通用软件ABAQUS的计算结果进行了比较研究,两种方法所得到的结果基本一致,但所发展的方法克服了ABAQUS中接触应力分段均匀分布的缺陷,因而所得到的接触应力较为合理,同时也说明了所提出的方法为由刚体、弹性体和粘弹性体所构成的复杂多体系统的数值分析提供了有力的工具。Numerical analyses are made in this paper to simulate viscoelastic responses of multi-body systems under external loads by using the method developed by the authors. Through comparative computations, the effects of viscous damping on the deformation and movement behavior as well as interaction behavior of the multiple-bodies systems are examined. Verification of the method is made by a comparative study on a given example with the general FEM software ABAQUS. From the comparison, it is found that these two methods can obtain the almost same deformations and movements, however contact stresses got by the proposed method are more reasonable because that section by section of uniform distribution of contact stresses in ABAQUS can be overcome.

关 键 词：非连续变形 粘弹性分析 接触力元 广义有限单元 相互作用 多体系统 接触界面 应力集中 

分 类 号：O342[理学—固体力学] TU4[理学—力学]