Chen Yangxi, Jin Xin, Guo Yan, Zhao Jian, Guo Sujuan
Key Laboratory of Pressure Systems and Safety, Ministry of Education, East China University of Science and Technology, Shanghai 200237, China.
China Nuclear Power Technology Research Institute Co., Ltd., Shenzhen 518000, China.
Materials (Basel). 2023 Apr 25;16(9):3364. doi: 10.3390/ma16093364.
A modified numerical procedure for the shakedown analysis of structures under dual cyclic loadings, based on the Abdalla method, is proposed in this paper. Based on the proposed numerical procedure, the shakedown analysis of the thick cylindrical vessels with crossholes (TCVCs) under cyclic internal pressure and cyclic thermal loading was carried out. The effects of material parameters (elastic modulus and thermal expansion coefficient) and crosshole radius on the elastic shakedown limit of TCVCs are discussed and, finally, normalized and formularized. Furthermore, the obtained shakedown limit boundary formulation is compared with FEA results and is verified to evaluate the shakedown behavior of TCVCs under cyclic internal pressure and cyclic thermal loading.
本文提出了一种基于阿卜杜拉方法的改进数值程序,用于双循环载荷作用下结构的安定性分析。基于所提出的数值程序,对带交叉孔的厚壁圆柱容器(TCVCs)在循环内压和循环热载荷作用下进行了安定性分析。讨论了材料参数(弹性模量和热膨胀系数)和交叉孔半径对TCVCs弹性安定极限的影响,并最终进行了归一化和公式化。此外,将得到的安定极限边界公式与有限元分析结果进行了比较,并验证其用于评估TCVCs在循环内压和循环热载荷作用下的安定性行为。