为使第二阶模态频率避开发动机一阶惯性力频率，文中对扶手架的质量、刚度进行局部修改，结果使手把振动有较大幅度的下降。

To separate these frequencies, we make a local modification to mass and stiffness of the handle and results in the vibration on the handle of walking tractor to reduce considerably.

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为使第二阶模态频率避开发动机一阶惯性力频率，文中对扶手架的质量、刚度进行局部修改，结果使手把振动有较大幅度的下降。

To separate these frequencies, we make a local modification to mass and stiffness of the handle and results in the vibration on the handle of walking tractor to reduce considerably.

youdao