【摘要】 针对基于灵敏度分析的结构动力修改方法在实际应用中的不足之处，改进了用于计算的公式，使之能够直接指导工程实践。另外，本文还给出了具体算例，对铰接式高速客车车体的局部结构进行了修改，使其固有频率得到了提高。同时，本文还提出了基于灵敏度分析的结构动力修改的一般步骤，具有较大的实际意义和应用价值。更多还原

【Abstract】 This paper put forward an improvement on the method for structural dynamics modification based on the sensitivity analysis to use it in the practice. As an example, a partial structure of car body of the articulated high speed passenger train is modified to increase its natural frequency. At the same time, a general step of the modification is presented, it has considerable practical worth.更多还原