载荷识别与系统参数辨识、动力特性修改等都属于振动的反问题。
Loading identification, like the system parameter identification and dynamic characteristics modification, is an inverse problem of structural vibration.
采用一种特征值反求形式的方法用来近似层状复合板的波动特性修改。
To obtain desired wave characteristics of composite laminate, the varying rate of eigenvalue with respect to the thickness change is approximated by the second order Taylor expansion.
本文研究了修改桥梁结构设计参数，使其自振周期和振型满足预先给定设计要求的动力特性修改过问题，提出了一种求解方法。
This paper presents a method for modifying the designing structural parameters of a bridge structure so that the bridge structure will freely vibrates at prescribed frequencies and modes.
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