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为了确定汽车结构的模态参数,用多点激振调力调频的试验方法,取得结构响应数据。并利用复数功率法、导纳圆法和模态阻尼振动分析方法建立模态参数与试验数据的表达式,用计算机处理获得汽车结构模态参数。
In order to determine the modal parameters of the automobile structure, the vibration response of the structure was obtained by using the test method of multi-point vibration excitation FM. The expressions of modal parameters and experimental data are established by using complex power method, admittance circle method and modal damping vibration analysis method. The modal parameters of automobile structure are obtained by computer processing.