航天器环境工程2025，Vol.42Issue(2)：152-158,7.DOI:10.12126/see.2024123
液体火箭发动机典型承力结构动态拓扑优化设计
Dynamic topology optimization design of typical load-bearing structures in liquid rocket engines
摘要
Abstract
A dynamic topology optimization process for the load-bearing structure of liquid rocket engines was presented in this study.This study focused on environmental adaptability and lightweight design of these structures under complex vibration and shock conditions.The process incorporated a comprehensive optimization approach encompassing static,dynamic,and random vibration aspects,ensuring multi-condition and multi-objective design.Static analysis-derived total compliance served as a constraint in the random vibration optimization.Dynamic optimization focused on optimizing the natural frequencies to avoid resonance in the low-frequency modes,thereby improving the structural seismic performance.Parametric sensitivity analysis and the OptiStruct platform ensured efficient convergence and stability under complex loading conditions.By integrating dynamic stiffness,vibration response,and mass constraints,the optimized design achieved a 30%reduction in overall mass while meeting environmental adaptability requirements.The first-order natural frequency and dynamic response characteristics of the optimized load-bearing structure were significantly improved.The developed process serves as a reference for the optimization design of complex structures in liquid rocket engines in the future.关键词
液体火箭发动机/动态拓扑优化/固有频率/随机振动/环境适应性Key words
liquid rocket engine/dynamic topology optimization/natural frequency/random vibration/environmental adaptability引用本文复制引用
朱兆基,樊勋,董龙雷,王玉涛,冯秀志,王珺..液体火箭发动机典型承力结构动态拓扑优化设计[J].航天器环境工程,2025,42(2):152-158,7.基金项目
航天基金项目(编号:909010106) （编号:909010106）
