limiting stress meaning in Chinese
极限应力
临界应力
Examples
- This paper overviewed the prediction methods of forming limit in sheet metal forming , which included forming limit stress diagram , the maximum forming thinning ratio , forming limit diagram and ductile fracture criteria ( dfc )
摘要对板料成形中的成形极限应力图、最大变薄率、成形极限图以及韧性断裂准则等预测成形极限的方法，进行了综述和分析。 - According to the former mathematical calculation models , the applied software , which uses the forming limit stress diagram as its instability criterion , is developed based on the sheet metal forming finite element code dynaform using visual c + +
根据以上所建立的数学计算模型,基于板成形专用有限元分析软件dynaform的环境,用visualc + +开发了以成形极限应力图作为判据的应用软件。 - 3 . the crane load and fatigue strength are regarded as stochastic process , the fatigue dynamic reliability based on limit stress model and fatigue dynamic reliability based on accumulation damage model are established on the base of statistic analysis the fatigue load and resistance
3 、在对疲劳荷载与抗力统计分析的基础上，视吊车荷载与疲劳强度为随机过程，建立了基于极限应力模式的疲劳动态可靠性分析模型及基于累积损伤模型的疲劳动态可靠性分析模型。 - In view of the above reason , this thesis adopts the forming limit stress diagram as the instability criterion due to its independence of strain paths , which is acknowledged at home and abroad in the field of sheet metal forming , and develops the applied software for the special purpose finite element analysis code dynaform in order to provide it with a new instability criterion
本文基于板成形专用有限元分析软件dynaform ,以国内外板料成形领域认同的具有应变路径独立性优点的成形极限应力图为判据进行了应用软件的二次开发,以期为板成形有限元分析软件提供一个新的失稳判据。 - This thesis briefly analyzes some yield criteria and instability criteria to the sheet metal forming first . then according to the transformation rule from ultimate strain to ultimate stress , it establishes the mathematical calculation models of the forming limit stress diagram for the software development according to hill48 、 hill79 and hosford yield criterion irrespectively
本文首先分析了板料成形的屈服准则和失稳准则,然后根据极限应变到极限应力的转换关系,分别采用hill48屈服准则、 hill79屈服准则和hosford屈服准则,建立了用于软件开发的成形极限应力图的数学计算模型。