承压结构的弹塑性分析研究  

Research on Elastic-plastic Analysis of Pressure Bearing Structures

作　　者：于晓燕 白海永 岳伟 Yu Xiaoyan;Bai Haiyong;Yue Wei(Shanghai NAGAMORI Machinery Co.,Ltd.,Shanghai201607,China)

机构地区：[1]上海森永工程设备股份有限公司,上海201607

出　　处：《电站辅机》2024年第3期26-30,共5页Power Station Auxiliary Equipment

摘　　要：数值模拟是承压结构应力分析设计中经常采用的方法,与弹性分析相对应的应力分类法使用较为广泛,在法规及标准中规定得较为详细。该方法要求设计者能够准确的对应力进行分类,然后使用不同的准则进行控制。但是在一些特殊结构中一次应力与二次应力的划分较为困难,有可能造成保守,也可能造成冒进。采用ANSYS软件,通过简单模型的测试与分析,提出采用极限分析法或弹塑性分析法作为替代方案,并给出了有限元软件ANSYS实现的路径与方法。Numerical simulation is a commonly used method in stress analysis and design of pressure bearing structures.The stress classification method corresponding to elastic analysis is widely used and specified in regulations and standards in detail.This method requires designers to accurately classify the stress and then use different criteria for control.However,in some special structures,the division of primary and secondary stresses is difficult,which may result in conservatism or recklessness.Using ANSYS software,through simple model testing and analysis,it is proposed to use limit analysis method or elastoplastic analysis method as an alternative solution,and the path and method of finite element software ANSYS implementation are given.

关 键 词：弹塑性分析 极限分析 应力分类 数值模拟 

分 类 号：TH49[机械工程—机械制造及自动化]