摘要
将多输入多输出 (MIMO )时域模态分析理论及变时基技术应用于汽车车身模态分析中 ,开发了MAS软件系统。以改装车身为例 ,用 MAS软件系统分析和计算了该车身的模态参数 ,并与解析模态计算结果进行了比较。探讨了 MIMO时域模态分析技术应用于汽车结构动态分析领域的可行性和优越性。
This paper evaluate the dynamic characteristics of the automobile body based on the MIMO time domain modal analysis and the variable time base technique .A corresponding computer software MAS was developed. The modal parameters of a van(CG620) was computed by using software MAS and ANSYS. Both the results from MAS and ANSYS were discussed and compared with each other and showed that the dynamic characteristics of the automobile body evaluated by the MIMO time domain modal analysis was superior to those by the frequency domain technique. The precisions of the modal parameters computed by both the MIMO time domain modal analysis and the variable time base technique will be raised owing to the optimization of the interval coefficient.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2003年第4期8-10,共3页
Transactions of the Chinese Society for Agricultural Machinery
基金
原机械部教育司青年基金资助项目 (项目编号 :815 0 3 2 )
