The energy dissipation and the damping capacity of a press-fit joint under a vertical load are investigated using the continuum elastic beam model. The clamping pressure is considered to be of power law with distance along the contact interface and the corresponding relative displacements under vertical load are derived. Expression of the minimum critical vertical load inducing relative slip along the contact interface is determined. The hysteresis curves of the vertical forces as a function of the relative displacement at the contact interface are obtained for different pressure distribution laws and the associated energy dissipations are presented. The damping ratio of the assembled structure is further evaluated. It is shown that peak values of damping ratio exist for different pressure distribution laws and the normal load at which the peak damping ratio occurs is a function of the pressure distribution law. Three-dimensional finite element analysis validation is performed, which shows good agreement with model predictions.

使用连续弹性梁模型研究了压装接头在垂直载荷下的能量耗散和阻尼能力。夹紧压力被认为是幂律，沿着接触界面的距离是一定的，并得出了垂直载荷下的相应相对位移。确定引起沿接触界面的相对滑动的最小临界垂直载荷的表达式。对于不同的压力分布规律，获得了垂直力的滞后曲线，该滞后曲线是接触界面处相对位移的函数，并给出了相关的能量耗散。进一步评估组装结构的阻尼比。结果表明，阻尼比的峰值存在于不同的压力分布规律中，并且出现峰值阻尼比的法向载荷是压力分布规律的函数。进行了三维有限元分析验证，这与模型预测显示出良好的一致性。