摘要
目的研究固体发动机药柱头部人工脱粘层在50,20,-40℃等3种温度下的应力应变。方法基于线性粘弹性有限元方法,利用ABAQUS分析软件对药柱应力应变进行仿真。结果得到了人工脱粘层在3种温度条件下的Mises和最大主应力应变云图,及Ⅰ,Ⅱ界面轴向、周向和径向的应力应变对比曲线。结论最大应力应变出现在人工脱粘层根部,应力与环境温度的变化成线性关系,温度变化对Ⅰ界面上脱粘层轴向应变、Ⅱ界面上径向应变影响最大。
Objective To study the stress and strain of artificial debond layer of solid engine propellant head at 50, 20 and -40℃. Methods Based on the linear viscoelastic finite element method, we carried out simulation analysis of the stress and strain of the propellant using ABAQUS software. Results The Mises and the maximum principal stress-strain contours of the artificial debond layer at three temperatures, as well as the I, Ⅱ interfacial axial, radial and circumferential stress-strain contrast curves were obtained. Conclusion The maximum stress and strain occurred at the bottom of the artificial debond layer, and the stress had a linear relationship with the change of environmental temperature. The temperature change had largest influence on the I interface axial strain and the Ⅱ interface radial strain.
出处
《装备环境工程》
CAS
2015年第2期30-34,86,共6页
Equipment Environmental Engineering
关键词
固体发动机
药柱
人工脱粘层
应力应变
有限元
solid engine
propellant grain
artificial debond layer
stress-strain
finite element
