复杂电子装备结构动力学模型修正技术研究  

RESEARCH ON UPDATING TECHNOLOGY OF DYNAMIC MODEL FOR COMPLEX ELECTRONIC EQUIPMENT

作　　者：王长武[1] 吴敬凯[1] WANG ChangWu;WU JingKai(Nanjing Research Institute of Electronics Technology,Nanjing 210039)

机构地区：[1]南京电子技术研究所

出　　处：《机械强度》2019年第6期1414-1420,共7页Journal of Mechanical Strength

摘　　要：在产品实物制造出来之前,运用数字化设计仿真技术对其未来的各种性能进行全面评估、优化改进,是当下装备研发的主流模式。对于复杂结构,由于模型简化等原因,仿真模型与真实模型之间仍存在一定差异,模型置信度是衡量一个仿真模型是否可有效指导结构设计的重要因素。分析了复杂结构产品动力学模型的等效建模方法和影响模型置信度的因素,并结合电子装备结构特点提出了自底向上的逐级修正方法。最后,以某典型产品为例,按自底向上策略对仿真模型进行了修正,得到了满足工程精度要求的力学仿真模型,为后续类似产品的衍生设计仿真奠定了模型基础。Before the production of products,it is the mainstream mode of equipment research and development to use the digital design or simulation technologies to comprehensively evaluate and optimize their performance.As complex structures,it is inevitable that there are some differences between the simulation model and the real model due to the simplification of model and other reasons.In this condition,Model confidence is an important factor to evaluate whether a simulation model can effectively guide the structural design.The paper analyzed the equivalent modeling method of dynamics model of complex structure and the influence factors in the simulation model.A bottom-up model updating method was proposed which is combined with the characteristics of electronic equipment structure.A typical case was given to verify the feasibility of the method.The simulation model satisfying the requirement of engineering precision is obtained by using the bottom-up model updating strategy,which lays a foundation for the subsequent design and simulation of similar products.

关 键 词：复杂电子装备 动力学分析 模态测试 模型置信度 模型修正 

分 类 号：TH113[机械工程—机械设计及理论]