压力容器分析设计方法进展

介绍并对比弹性和非弹性“分析设计”方法中的主要方法,以反映分析设计方法的发展趋势。在工程应用上的基于弹性分析设计方法有:等效线性化方法、两步法、一次结构法、弹性补偿法和GLO SS R-N ode法。这些方法各有特点和局限性。基于弹塑性理论的分析设计方法回避了弹性方法中应力分类法的实现难点等局限性,并已被编入欧盟的设计标准和美国的A SM E规范。对一实例采用了不同的分析设计方法,结果表明,弹性和非弹性分析设计方法在应用过程和计算结果等方面都有较大的不同。压力容器的分析设计方法正逐步从弹性分析设计方法向非弹性分析设计方法方向发展。

Advances in "design by analysis" methods for pressure vessels

Various "Design by Analysis" methods were reviewed for use in the design of pressure vessels.The elastic "Design by Analysis" methods focus on stress classification approaches,such as the Stress Equivalent Linearization,the Two-Step Approach,the Primary Structure method,the Elastic Compensation method,and the GLOSS R-Node method.Inelastic "Design by Analysis" methods overcome the disadvantages of the stress classification methods,and have been organized into the European pressure vessel standard and the ASME Code.A calculated example demonstrates the differences of the elastic and inelastic methods.The results show that inelastic methods are more appropriats for complex pressure vessel components.