黄波,刘杰,罗天元,胥泽奇,张凯.固体发动机药柱应力应变仿真与试验验证研究[J].装备环境工程,2015,12(1):15-19,92. HUANG Bo,LIU Jie,LUO Tian-yuan,XU Ze-qi,ZHANG Kai.Study on the Stress-Strain Simulation and Experimental Validation for the Solid Motor Grain[J].Equipment Environmental Engineering,2015,12(1):15-19,92. |
Objective To study the performance evolution rule of missile propellant at different ambient temperatures. Methods Using ABAQUS finite element analysis software, the stress and strain of the propellant were analyzed at three different ambient temperatures through the simulation calculation of grain structures. In addition, the propellant tensile stress relaxation test analyses were used to validate the simulation results. Results The maximum stress-strain occurred at the bottom of the head artificial debonding layer. In the internal grain, post along the radial, the closer to the surface of the inner hole, the greater value of stress and strain; while along the axial grain, the maximum stress-strain at the surface of the inner hole occurred near the middle position of the grain. Conclusion At low strain levels, the linear viscoelastic mechanical behavior and constitutive model could simulate the propellant well, when the strain level was below 14.3%, the relative error between the simulation and the test results could be controlled within 10%. |