农业机械学报2012，Vol.43Issue(4)：15-19,5.DOI:10.6041/j.issn.1000-1298.2012.04.004
基于等参变换的车身有限元模型自由变形设计
Free Form Deformation Design for Auto-body Finite Element Model Based on Isoparametric Transformation
摘要
Abstract
To improve the efficiency of auto-body design, an algorithm of morphing design for auto-body based on free form deformation and isoparametric transformation was proposed. In this algorithm, the control finite element model ( FEM ) model was consisted of a collection of polyhedral elements, such as hexahedron, pentahedron and tetrahedron. Then the correspondence of isoparametric transformation between FEM model and control parametric volume was established, and the deformation of control parametric volume was propagated to the embedding FEM model. The algorithm avoided the problem of computational cost of the parameterization of local coordinates through the given isoparametric transformation and its inverse transformation. From the numerical simulation on FEM model of an auto-body,the validity and efficiency of proposed algorithm were verified.关键词
车身设计/有限元模型/自由变形/等参变换Key words
Auto-body design, Finite element model, Free form deformation, Isoparametric transformation分类
机械制造引用本文复制引用
刘明增,李宝军,王长生,胡平..基于等参变换的车身有限元模型自由变形设计[J].农业机械学报,2012,43(4):15-19,5.基金项目
国家自然科学基金重点资助项目(10932003、u0935004)、国家重大基础研究发展计划(973计划)资助项目(2010CB832700)和中央高校基本科研业务费专项资金资助项目 （10932003、u0935004）
