摘要
由于较好的低温性能,奥氏体不锈钢被广泛应用于LNG低温储罐,而奥氏体不锈钢的应变强化技术能提高材料的屈服强度实现容器的轻量化设计。在工程上,奥氏体不锈钢材料性能数据呈现一定的离散性,在压力容器制造和使用过程中,容器的尺寸和使用条件也是随机变量。利用可靠性设计中的一次二阶矩法和ANSYS软件中的Prob Design模块,可以得到了应变强化前后容器关键参数的随机分布,从而得到强化前后结构可靠度的变化,为奥氏体不锈钢应变强化容器的设计和制造提供支持。
Due to its good low temperature properties, austenitic stainless steel is widely used in LNG storage. The strain hardening of austenitic stainless steel technology can improve the yield strength of the material to achieve the storage lightweight design. In engineering applications, austenitic stainless steel showed some discrete performance data and in the pressure vessel manufacture and service process, and the storage size and service conditions is also random variables. Therefore, it uses reliability design FOSM method based on the actual situation and ANSYS Prob design module to get the random distribution of key parameters after strain hardening, and different parameters before and after the strain hardening can be obtained support for design and manufacture of austenitic stainless steel storage based on strain hardening.
出处
《机械设计与制造》
北大核心
2014年第7期55-57,共3页
Machinery Design & Manufacture
基金
2012江苏省"六大人才高峰"项目资助(51202107)
