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通过数值模拟和试验方法分析不同荷载下半球形钢壳的屈曲和后屈曲性能。对试件施加不同竖向压力的方法为:一块刚性板和一些圆形、矩形、球形截面的刚性杆;一个刚性管,一块开洞的平板,一个表面刻痕的钢管。研究了试件直径和厚度等几何参数对屈曲荷载的影响。数值模拟分析通过ABAQUS有限元分析软件完成,试验采用的是8802液压伺服机。两种方法得到的结果相近,说明数值模拟的结果是正确的。
The buckling and post-buckling properties of the hemispherical steel shell under different loads were analyzed by numerical simulation and experimental methods. The method of exerting different vertical pressure on the specimen is: a rigid plate and some rigid rods with circular, rectangular and spherical sections; a rigid pipe, a plate with an opening and a steel pipe with scored surface. The influence of geometrical parameters such as specimen diameter and thickness on buckling load was studied. Numerical simulation analysis by ABAQUS finite element analysis software to complete the test using the 8802 hydraulic servo. The results obtained by the two methods are similar, indicating that the numerical simulation results are correct.