【摘要】 针对大型储油罐顶网壳结构稳定性十分复杂的问题,建立了适合大型储油罐顶网壳稳定性分析的三维有限元模型,并对储油罐顶网壳的三维有限元建模过程进行了详细的阐述。采用所建立的三维有限元模型对大型储油罐顶钢网壳的结构稳定性进行了数值模拟研究,研究了大型储油罐顶钢网壳的线性屈曲和非线性屈曲,获得了大型储油罐顶钢网壳的极限承载载荷。数值模拟结果为大型储油罐顶钢网壳的结构设计和使用工况设计提供了理论依据。更多还原

【Abstract】 Aiming at the stability of the large reticulated steel shell of the oil tank,the three-dimensional finite element model of the large reticulated steel shell of the oil tank was established and the finite element modeling process was described at detail.The linear and non-linear buckling process of the large reticulated steel shell was investigated and the limit load of the large reticulated steel shell was obtained.The stability of the large reticulated steel shell for the oil tank was simulated using the established three-dimensional finite element model.The results of simulation provided the theoretic base for the structural and the work condition designs for the large reticulated steel shell.更多还原