新材料两栖车身关重位置动刚度分析优化  

Modal stiffness analysis and optimization design for key position of a new material body of an amphibious vehicle

作　　者：孙旭光 李钊 孙晓策 邱思聪 张瑞亮 李强强 周中锋 SUN Xuguang;LI Zhao;SUN Xiaoce;QIU Sicong;ZHANG Ruiliang;LI Qiangqiang;ZHOU Zhongfeng(China North Vehicle Research Institute,Beijing 100072,China;Taiyuan University of Technology,Taiyuan 030002,China;Jianglu Machinery and Electronics Group Co.,Ltd.,Xiangtan 411100,China)

机构地区：[1]中国北方车辆研究所系统总体技术部,北京100072 [2]太原理工大学机械与运载工程学院,太原030002 [3]江麓机电集团有限公司产品研究院,湖南湘潭411100

出　　处：《兵器装备工程学报》2023年第9期211-215,253,共6页Journal of Ordnance Equipment Engineering

基　　金：装备预先研究项目(301051201)。

摘　　要：座圈作为炮塔载荷的主要安装与承载结构,其动态刚度的优劣是影响射击效能的重要因素。基于Hypermesh数值CAE软件,构建了某两栖车辆新质材料白车身有限元模型,对炮塔座圈关键位置进行了动态刚度数值计算分析,获得加速度频率响应曲线(IPI曲线);通过动态刚度测试试验对有限元模型进行了验证,结果表明,在对动态刚度特性曲线的对比分析的基础之上,对薄弱模态刚度点的优化设计,便座圈关重点模态刚度得到了显著改善;研究结果可为两栖车辆新质材料白车身的设计提供重要的理论依据。As the main installation and load-bearing structure of turret,the modal stiffness of the seat ring is an important factor that affects the firing efficiency.In this paper,based on the Hypermesh CAE software,a finite element model of BIT(body-in-white)of a new material of amphibious vehicle is constructed.The modal stiffness of the key position of turret seat is calculated and analyzed,the acceleration frequency response curve(IPI curve)is obtained,and the finite element model is verified by modal stiffness test.Based on the comparative analysis of modal stiffness characteristic curves,the modal stiffness of the seat ring is significantly improved by the optimum design of the weak modal stiffness points,which provides an important theoretical basis for the design of new material BIT of amphibious vehicle.

关 键 词：两栖车辆 新质材料 白车身 动态刚度 有限元 

分 类 号：U453[建筑科学—桥梁与隧道工程]