航天器环境工程2025，Vol.42Issue(6)：606-611,6.DOI:10.12126/see.2025069
行波声场下复合材料薄壁结构的应力场分析
Stress field analysis of a composite thin-walled structure under traveling-wave acoustic excitation
摘要
Abstract
Simulations and experiments were conducted to investigate the fatigue failure of composite materials in hypersonic vehicles under high-intensity acoustic loading.A C/SiC thin-walled structure was investigated,and,accounting for the spatial correlation characteristics of the traveling-wave acoustic field,the modal stress recovery method was utilized to obtain the RMS stress field distribution of a four-edge-clamped,transversely isotropic C/SiC plate under 168 dB traveling-wave acoustic excitation.The acoustic fatigue failure location was subsequently validated through a traveling-wave tube test.The simulation results were consistent with the experimental findings,indicating that fatigue failure first occurred in two symmetric in-plane regions with relatively high stress levels.This study provides essential technical support for the stress analysis and failure-mode evaluation of composite materials under high-intensity acoustic loading.关键词
C/SiC复合材料/宽频带应力场分析/行波管试验/声疲劳失效/模态应力恢复Key words
C/SiC composite/broadband stress field analysis/traveling-wave tube test/acoustic fatigue failure/modal stress recovery分类
航空航天引用本文复制引用
张永杰,霍懿,王振宇,吴振强..行波声场下复合材料薄壁结构的应力场分析[J].航天器环境工程,2025,42(6):606-611,6.
