The burst pressures of large diameter-to-thickness ratio thin-walled cylinders constructed of steel exhibiting a yield plateau were evaluated experimentally, by finite element analyses (FEA), and by existing predictive equations. The good agreement between the predicted and experimentally measured burst pressures of three thin-walled tanks with a large diameter-to-thickness ratio of 342, demonstrates that the proposed FEA model and failure criterion can evaluate the burst pressure of a thin-walled cylinder accurately. In contrast, a conventional elastic-strain hardening plasticity material model may overestimate the burst pressure of a cylinder. The results indicate that a nonlinear stabilization technique in ANSYS is a useful way to overcome the convergence difficulty caused by material softening when the FEA model includes the steel yield plateau. Comparisons of existing predictive models and experimental values reveal that most of the equations have a prediction deviation less than 10%, and that the Faupel equation can predict the burst pressure of a thin cylinder with high diameter-to-thickness ratio, with high precision.

通过有限元分析 (FEA) 和现有的预测方程，通过实验评估了由钢构成的大直径厚度比薄壁圆柱体的爆破压力，表现出屈服平台。三个大径厚比为 342 的薄壁储罐的预测爆破压力与实验测量爆破压力之间的良好一致性表明，所提出的 FEA 模型和失效准则可以准确评估薄壁圆筒的爆破压力. 相比之下，传统的弹性应变硬化塑性材料模型可能会高估气缸的爆裂压力。结果表明，当 FEA 模型包括钢屈服平台时，ANSYS 中的非线性稳定技术是克服材料软化引起的收敛困难的有效方法。与现有预测模型和实验值的比较表明，大部分方程的预测偏差小于10%，Faupel方程可以预测高径厚比薄圆柱体的爆破压力，精度高。