ASME Ⅷ-2分析设计法在形状不规则零部件中的应用

ASME Ⅷ-2 Application in Irregular Shape Parts and Components

简介了ASME Ⅷ-2按分析设计法及其具体实施的等效线性化方法,并以提环强度分析为例,分别使用有限元常规分析及ASME Ⅷ-2按分析设计法进行强度计算,通过两种方法计算结论与现场试验结果的对比,可知:按照ASME Ⅷ-2对应力进行分类后,采用等效线性化方法,计算结果与实际使用情况更吻合;尤其对于形状不规则零部件,应力分类后,计算结果更符合实际工程应用;使用该方法设计计算,有利于在零部件的设计阶段,有效地把控零部件尺寸、评估影响、优化设计。

Introduce the stress classification analysis in ASMEⅧ-2 alternative rules and its application– equivalent linearization method.Using the strength analysis of bail as example,considered the strength with the routine element analysis and stress classification analysis in ASMEⅧ-2 alternative rules,then compared the two different analysis results with the results of factory experiment,found that after classifying stress as ASMEⅧ-2 alternative rules,using the equivalent linearization method,the stress calculation result is more in line with actual usage,especially for the irregular shape parts and components,the analysis results is more suitable for engineering application;Using the stress classification analysis and the equivalent linearization method is good for designing the irregular shape parts and components,we can control the size of parts and components effectively,assess impact and optimize design.