The present research investigates the effect of pad reinforcement on the load-carrying capacities of a thin-walled pressurized cylindrical vessel with a radial nozzle structure. The main objective is to generate the plastic collapse moment boundaries versus a spectrum of steady internal pressures employing various criteria, namely the Plastic Work Curvature (PWC) and the Plastic Work (PW) criteria in addition to the Twice-Elastic-Slope (TES) Method. Initially, a validation study is conducted utilizing the finite element method to determine the out-of-plane (OP) plastic collapse moments utilizing the TES Method concerning two experimentally tested pad-reinforced vessel/nozzle structures. The validation study revealed very good outcomes. A non-padded vessel/nozzle is also analyzed for comparison purposes. The pad reinforcement enormously enhanced both the in-plane and the OP load-carrying capacities. The TES Method displayed a noticeable deficiency in determining the plastic collapse moments for the non-padded structure concerning the late medium to the high internal pressure spectra.

目前的研究调查了衬垫加固对具有径向喷嘴结构的薄壁加压圆柱形容器的承载能力的影响。主要目标是使用各种标准，即塑性功曲率 (PWC) 和塑性功 (PW) 标准以及两倍弹性斜率 (TES)，生成塑性坍塌力矩边界与一系列稳定内部压力的关系方法。最初，使用有限元方法进行验证研究，以利用 TES 方法确定平面外 (OP) 塑性坍塌力矩，涉及两个经过实验测试的衬垫增强容器/喷嘴结构。验证研究显示出非常好的结果。还分析了无衬垫容器/喷嘴以进行比较。衬垫加固极大地增强了平面内和 OP 的承载能力。TES 方法在确定有关晚期介质到高内压谱的非填充结构的塑性坍塌力矩方面存在明显缺陷。