Simulation and Verification Study on Gouging Effect of Hypersonic Rocket Sled

被引：0
|
作者：
Xia H. [1 ,2 ]
Liu Z. [1 ]
Yan H. [2 ]
Zhao X. [2 ]
Meng X. [2 ]
机构：
[1] School of Aerospace Engineering, Xi'an Jiaotong University, Xi'an
[2] Norinco Group Test and Measuring Academy, Shaanxi, Huayin
来源：
Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University | 2023年 / 57卷 / 04期
关键词：
gouging effect; material point method; rocket sled; rocket sled test in orbit;
D O I：
10.7652/xjtuxb202304008
中图分类号：
学科分类号：
摘要：
In order to develop the ability to analyze the gouging effect of rocket sled test with high confidence level, a simulation and verification study on gouging effect of hypersonic rocket sled was carried out based on real gouging data in orbit. Firstly, the parameter description of typical gouging phenomenon was obtained by the analysis of real gouging data of rocket sled test in orbit, and the closed-loop verification of gouging mechanism based on adiabatic shear theory is completed through the detection of chemical composition and mctallographic microstructure. Secondly, the Johnson-Cook constitutive model parameters were obtained by static tensile test and Hop-kinson bar test based on the principle of high temperature double synchronization. Finally, the simulations of gouging effect under three vertical speed conditions of 1. 75 m/s 2. 00 m/s and 2. 25 m/s were carried out using material point method. The simulation results in terms of gouging morphology were basically consistent with the ones obtained by real tests. The comparison between the results of simulation and real tests shows that the consistency between measurement and simulation is the best when the vertical speed of the slipper is 2 m/s, and the deviations of the length and depth of the gouging pit are 1. 8% and —3. 9%, which arc not more than 5%. The applicability of the material point method in analyzing gouging is verified. The method and parameter value can be used as a reference for the gouging safety evaluation in the design stage of hypersonic rocket sled test. © 2023 Xi'an Jiaotong University. All rights reserved.
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页码：71 / 79
页数：8
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