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| Study on the Stress-Strain Simulation and Experimental Validation for the Solid Motor Grain |
| Received:October 20, 2014 Revised:February 15, 2015 |
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| DOI：10.7643/issn.1672-9242.2015.01.015 |
| KeyWord:grain storage performance stress-strain finite element experimental validation |
| Author | Institution |
| HUANG Bo |
1. South West Institute of Technical Engineering， Chongqing ， China;2. Chongqing Engineering Research Center for Environmental Corrosion and Protection， Chongqing ， China |
| LIU Jie |
1. South West Institute of Technical Engineering， Chongqing ， China;2. Chongqing Engineering Research Center for Environmental Corrosion and Protection， Chongqing ， China |
| LUO Tian-yuan |
1. South West Institute of Technical Engineering， Chongqing ， China;2. Chongqing Engineering Research Center for Environmental Corrosion and Protection， Chongqing ， China |
| XU Ze-qi |
1. South West Institute of Technical Engineering， Chongqing ， China;2. Chongqing Engineering Research Center for Environmental Corrosion and Protection， Chongqing ， China |
| ZHANG Kai |
1. South West Institute of Technical Engineering， Chongqing ， China;2. Chongqing Engineering Research Center for Environmental Corrosion and Protection， Chongqing ， China |
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| Abstract: |
| 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%. |
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