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首页> 外文期刊>Applied Mechanics and Engineering >PLASTIC LIMIT LOAD OF ELLIPSOIDAL PRESSURE VESSEL HEAD WITH NOZZLE UNDER INTERNAL PRESSURE LOADING
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PLASTIC LIMIT LOAD OF ELLIPSOIDAL PRESSURE VESSEL HEAD WITH NOZZLE UNDER INTERNAL PRESSURE LOADING

机译：内压载荷作用下带喷嘴的椭圆形压力容器头的塑性极限载荷

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摘要

A new method and numerical procedure for determining the plastic limit load in an ellipsoid-cylinder intersection using the elastic-plastic finite element analysis are presented. The proposed method is based on the maximum criterion of the rate of change of the relative plastic work. For the elastic-plastic analysis of the nozzle connections the 2D finite element method and plasticity theory with strain hardening are used. The results of the comparison of the plastic limit pressure obtained on the basis of different known criteria and the proposed criterion are presented. A parametric study of ellipsoidal heads with a nozzle under internal pressure loading was performed. The effects of nondimensional geometric parameters of shell intersection on the plastic limit pressure are discussed.%shell intersection; elastic-plastic finite element analysis; plastic limit load; ellipsoidal head; nozzle connection
机译：提出了一种基于弹塑性有限元分析的椭圆-圆柱相交确定塑性极限载荷的新方法和数值程序。所提出的方法是基于最大相对塑性变化率的标准。为了对喷嘴连接进行弹塑性分析，使用了二维有限元方法和带有应变硬化的可塑性理论。给出了根据不同的已知标准和建议的标准获得的塑性极限压力的比较结果。进行了在内部压力载荷下带有喷嘴的椭圆头的参数研究。讨论了壳体相交的无量纲几何参数对塑性极限压力的影响。弹塑性有限元分析；塑料极限载荷；椭圆头喷嘴连接

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