In the analysis of the stress and deformation under dynamic loading, the inertiaforce and damping moment should be considered in addition to the transverse shear effect.
在分析动载荷下的应力和变形时，除考虑横向剪切效应外，还须考虑微段的惯性力和阻尼力矩。
2
Then the inertiaforce is reduced by the inconstant acceleration, so that the static rigidity of the machine is raised and the kinetic performance of the machine is improved.
通过变加速方法降低惯性力，提高了机床的静刚度，改善了机床的动力学性能。
3
Give an example of mini van door lock, analyze the inertiaforce on door lock when it runs.