基于模态叠加法的振动响应修正方法研究概述  

Summary of Modal Superposition Method Based Correction Methods for Vibration Response

作　　者：于晨阳 范宣华[1] YU Chen-yang;FAN Xuan-hua(Institute of systems engineering,CAEP,Mianyang 621999,China)

机构地区：[1]中国工程物理研究院总体工程研究所,四川绵阳621999

出　　处：《装备环境工程》2019年第2期90-94,共5页Equipment Environmental Engineering

基　　金：国家自然科学基金(11872059);科学挑战专题项目(TZ2018002)

摘　　要：针对模态叠加法受模态选取和截断等影响,往往导致动力学计算精度不高,尤其是对高频响应难以预测这一缺点,对多个基于模态叠加的修正方法研究的现状和发展趋势进行了概述,简要分析了各个修正方法的优劣,并结合目前的大规模并行计算技术探讨了添加这些修正方法的可能性。研究表明,模态加速度法是目前相对容易实现的一种修正算法,最易于在大规模并行计算和实际工程应用中实现。The modal superposition method is affected by modal selection and truncation,which leads to low precision in dynamic calculation,especially for high frequency response.In response to this shortcoming of the mode superposition method,this paper summarized the research status and development trend of multiple correction methods based on the modal superposition,analyzed the advantages and disadvantages of each correction method,and discussed the possibility of adding these correction methods to massively parallel processing.Research shows that the modal acceleration method is a correction method that is easy to be implemented at present,and is most easily to be implemented in massively parallel processing and practical engineering applications.

关 键 词：模态叠加法 模态加速度法 修正方法 大规模并行计算 

分 类 号：TB123[理学—工程力学]