摘要
航行体垂直出水过程中,由于空泡在壁面处溃灭会产生较大的压力脉冲,从而激起结构剧烈的结构动响应,严重时可能造成结构破坏。基于遗传算法,提出了以减小航行体整体载荷为目标的顶层优化方法,通过调整整体质量-刚度分布参数,改变其动力学特性,实现了多目标优化,得到了良好的整体降载效果,在工程上具有重要的应用价值。
The vehicle is subjected to large pressure impulse by cavitation collapse near the wall in exiting water process.The structural dynamic responses are so strong that sometimes bring on the structural failure. A top optimization method with the goal of decreasing the vehicle global load based on genetic algorithm is proposed. The vehicle dynamic characters are changed by means of adjusting the global mass and stiffness parameters. Consequently, multiple objective optimization is applied and good global load decrease is achieved, which indicates the applicable value of the method in engineering.
作者
李明
吕海波
岳之光
LI Ming;LV Hai-bo;YUE Zhi-guang(Beijing Institute of Astronautical System Engineering,Beijing 100076,China)
出处
《强度与环境》
CSCD
2019年第5期18-22,共5页
Structure & Environment Engineering
基金
装发部共用技术项目基金(41407050102)
关键词
结构动响应
遗传算法
优化
structural dynamic response
genetic algorithm
optimization
