shock excitation

Based on the data of packaging product dropping test and the shock spectrum, a new method is presented to determine the fragility of packaging products under complex excitation by the two index of critical acceleration and critical displacement.

以产品跌落试验实测数据为依据，讨论了一种基于易损零件冲击谱，用临界加速度和临界位移两个指标确定产品易损性的新方法。

And then establishes other parts of the motorcycle Finite element model, such as engines, front and rear shock absorber, front fork, bank fork, and wheels to Complete motorcycle finite element model. Secondly, analyzes the vibration excitation of the motorcycle.

建立摩托车其他部件，如发动机、前后减振器、前叉、后平叉以及车轮等的有限元模型，最终完成整车有限元模型的建立。

In the rocket launch process, satellite or spacecraft experience of dynamic environment is very bad, the excitation is not only from the random excitation when the rocket engines working, but also the pneumatic incentive and the transient shock from the separation of rockets.

在运载火箭的发射过程中，航天器所经历的力学环境非常恶劣，其不仅受到来自于火箭发动机工作时的随机激励，还受整流罩的气动激励、火箭分离的瞬态冲击等。

The shock absorption rule of labyrinth assembly under single-point excitation force is researched.

摘要研究在单点激振情况下阻尼套筒对蓖齿封严结构的减振规律.