摘要
由于电子设备功能集成化的增加,导致产品重量激增,因此在满足力学考核要求的前提下,亟待开展电子设备的结构减重设计。以某天线产品为研究对象,基于刚度平均法的设计思路,通过模态定性分析结构不同区域刚度大小,对于低刚度区进行针对性改进加强,对于高刚度区采取去冗余刚度改进设计,通过平均结构刚度,提高结构承载利用率,从而实现结构减重。通过有限元仿真校核减重后结构的力学响应情况,并在此基础上开展力学环境试验,进一步验证结构在大幅减重的同时,其力学承载性能依然满足环境试验要求。研究结果表明,基于刚度平均法的改进设计思路,使天线前端产品减重25.8%,而基础频率提高115.9%,且结构满足规定的力学环境试验要求,证明该减重设计方法合理有效,对于其它产品的设计具有一定指导意义。
Due to the increase of functional integration of electronic equipment,the weight of products has surged.Therefore,on the premise of meeting the requirements of mechanical assessment,it is urgent to carry out structural weight reduction design.In this paper,an antenna product is taken as the research object,and based on the design idea of stiffness averaging method,the stiffness of different regions of the structure is qualitatively analyzed by modal analysis,and targeted improvements are made to strengthen the low stiffness region,and redundant stiffness improvement design is adopted for the high stiffness region,so as to improve the load-bearing utilization rate of the structure by averaging the structural stiffness,thus realizing the structural weight reduction.In addition,the mechanical response of the structure after weight reduction is verified by finite element simulation,and the mechanical environmental tests are carried out to further verify that the mechanical bearing of the structure still meets the requirements while significantly reducing weight.The research results show that the improved design approach based on stiffness averaging method can reduce the weight of antenna by 25.8%,and increases the fundamental frequency by 115.9%,and the structure can meet the requirements,which proves that the weight reduction design method is reasonable and effective,and has certain guiding significance for the design of other products.
作者
王崇哲
蒲刚
何亚东
程皓月
WANG Chongzhe;PU Gang;HE Yadong;CHENG Haoyue(Southwest Electronic Equipment Research Institute,Chengdu 610036,China)
出处
《机械》
2025年第2期59-65,共7页
Machinery
关键词
电子设备
减重
刚度平均法
有限元仿真
electronic equipment
weight reduction
stiffness average method
finite element simulation
