【作者】 孙禹； 段成红； 陆明万；

【Author】 Sun Yu;Duan Chenghong;Lu Mingwan;College of Mechanical and Electrical Engineering,Beijing University of Chemical Technology;School of Aerospace Engineering,Tsinghua University;

【机构】 北京化工大学机电工程学院； 清华大学航天航空学院；

【摘要】 简要介绍欧盟EN13445-3:2009标准附录B所涉及的结构应变,提出确定主结构应变的三种具体方法。通过数值实验对比三种方法的相对误差,得出以下结论:按照欧盟标准提及的方法,应首先将表面支点的应变分量二次外推到热点处,然后求热点处的主结构应变:沿通过热点的路径进行"应变线性化"处理后的线性部分,也可用于求热点处的主结构应变,且所得结果偏于保守。更多还原

【Abstract】 A introduction of the structural strain involved in European standard EN13445-3:2009,Unfired pressure vessels,Part 3:Design,Annex B is presented in this paper,three methods to determine the principal structural strains are proposed.Compare their relative error of the numerical experiments.The conclusion are:when using EN13445,strain components of surface pivot points shall be determined by quadratic extrapolation,then obtaining principal structural strains of hot spot;Linear component of strain linearization can be used to calculate the principal structural strains of hot spot,which is more conservative.更多还原