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Simulation of pyroshock environment and effect rules of shock response spectrum

Published online by Cambridge University Press:  14 April 2023

W. Wang Open the ORCID record for W. Wang [Opens in a new window] ,
K. Huang  and
F. Zhao Open the ORCID record for F. Zhao [Opens in a new window]
W. Wang
Affiliation:
School of Mechanical Engineering, University of Science and Technology Beijing, Beijing, China The Key Laboratory of Fluid and Matter Interaction, University of Science and Technology Beijing, Beijing, China
K. Huang
Affiliation:
School of Mechanical Engineering, University of Science and Technology Beijing, Beijing, China
F. Zhao*
Affiliation:
National Center for Materials Service Safety, University of Science and Technology Beijing, Beijing, China
*
*Corresponding author. Email: zhaofei@ustb.edu.cn
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Abstract

The high-frequency and high-amplitude pyroshock environment during the service of the spacecraft will cause damage to the equipment. Here, we develop a shock test device based on air cannon to simulate the above pyroshock environment. Then, a finite element model was established by explicit dynamic software ANSYS/LS-DYNA, and the simulation results were proved to be consistent with the test data. Based on the theory of Shock Response Spectrum (SRS), the effects of device parameters such as pressure, bullet material and resonant plate material on SRS were investigated via numerical simulation and shock test. This study shows that the amplitude of SRS increases with the increase of pressure in the range of 0.15–0.60 MPa, and the break frequency amplitude has a square root function relationship with the pressure. Additionally, the high-frequency amplitude of SRS was affected by the energy transfer efficiency of the bullet.

Type
Research Article
Information
The Aeronautical Journal , Volume 127 , Issue 1316 , October 2023 , pp. 1659 - 1675
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Copyright
© The Author(s), 2023. Published by Cambridge University Press on behalf of Royal Aeronautical Society

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