摘要
为了解决目前铁路货车焊缝疲劳数据管理效率低,难以满足产品快速抗疲劳设计需求的问题,研究并开发了集三维可视化模型,焊缝疲劳计算,虚拟疲劳、试验测试的焊缝疲劳评估数据管理于一体的三维可视化系统.为了实现该系统,提出了基于场景图的CAD/CAE可视化模型装配树;研究并嵌套了试验测试等效应力幅焊缝疲劳评估算法;提出了基于面向焊缝对象的可视化方法、MVC模式数据映射技术,建立了主S-N曲线法、IIW名义应力法、等效应力幅法焊缝疲劳评估数据与焊缝模型的双向映射.最后以C70E车体焊缝疲劳设计作为实例,证明了该软件系统的有效性及实用性.
In order to solve the problem that the current efficiency of fatigue data management of wagon welded joints is too slow to meet the demand of rapid fatigue design, a 3D visualization system which integrates the virtual model, the fatigue calculation method for weld joints and weld joints fatigue assessment data from virtu- al and real fatigue test is studied and developed. For the system, an assembly tree structure based on Scene Graph for a CAD/CAE visual model, a weld joint-object-oriented visualization method and a data mutual-map- ping technique based on MVC model are proposed. In addition, the equivalent stress amplitude calculation algorithm was integrated to the system and the weld joints fatigue data of master S-N curve method. The IIW nominal stress method and the equivalent stress amplitude method is mapping to the weld joints model with the methods above. Finally, a welded joints fatigue design of the C70E wagon car body is taken as an example was used to prove the validity and usefulness of the software system.
出处
《大连交通大学学报》
CAS
2017年第4期187-191,共5页
Journal of Dalian Jiaotong University
基金
辽宁省自然科学基金资助项目(20170540137)
辽宁省教育厅高等学校科学研究计划资助项目(L2014182)
