不同材料卧式储液容器应力与变形分析

Stress and Deformation Analysis of Horizontal Liquid Storage Vessels of Different Materials

为分析不同材料储液容器结构受压后的力学特性,采用有限元法分析钛合金、不锈钢、滚塑钢衬塑3种材料下卧式储液容器在承受不同压力作用时应力与变形的变化规律。结果表明:当压力从2 MPa增加到8 MPa时,3种材料的最大变形差分别为2.3、3.05、0.75 mm,最大应力差为31.43、138.4、106.97 MPa,安全系数差值为0.86、0.87、0.01;压力值为2 MPa时,钛合金的安全系数最高为2.34;储液容器的变形量和应力随着压力的增加呈上升趋势,而安全系数随着压力的增加逐渐降低。

To investigate the mechanical performances of the liquid storage containers with different materials,the finite element method is applied and three materials include titanium alloy,stainless steel and rolled plastic steel are selected,and the stress and deformation of the horizontal liquid storage containers are analyzed with different pressures.The results show that when the pressure varies from 2 MPa to 8 MPa,the maximum deformation differences of the structure with three materials are 2.3,3.05,and 0.75 mm respectively,and the maximum stress differences are 31.43,138.4,and 106.97 MPa,and the safety factor differences are 0.86,0.87 and 0.01.When the pressure reaches to 2 MPa,the maximum safety factor of the structure made by the titanium alloy is 2.34.The deformation and stress of the liquid storage vessel increase with the increase of pressure,while the safety factor decreases with the increase of pressure.