CAJ | 학술논문

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。
목적：연구고체발동궤약주두부인공탈점층재50，20，-40℃등3충온도하적응력응변。방법기우선성점탄성유한원방법，이용ABAQUS분석연건대약주응력응변진행방진。결과득도료인공탈점층재3충온도조건하적Mises화최대주응력응변운도，급Ⅰ，Ⅱ계면축향、주향화경향적응력응변대비곡선。결론최대응력응변출현재인공탈점층근부，응력여배경온도적변화성선성관계，온도변화대Ⅰ계면상탈점층축향응변、Ⅱ계면상경향응변영향최대。
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 theⅠ,Ⅱinterfacial 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 theⅠinterface axial strain and theⅡinterface radial strain. KEY WORDS:solid engine;propellant grain;artificial debond layer;stress-strain;finite element.