A Hertz-pounding formulation with a nonlinear damping and a dry friction element
A Hertz-pounding formulation with a nonlinear damping and a dry friction element
复制标题
具有非线性阻尼和干摩擦元件的赫兹冲击公式
作者：
F. Bamer
本文提出了一种新的碰撞模型，该模型允许在激励时间段内修改碰撞条件。该公式由一个赫兹弹簧，一个非线性阻尼，和一个干摩擦元件。在这方面，差距起作用，即， 穿透的条件被延长。这允许有效的碰撞描述，包括在结构的潜在碰撞区域内描述可能的损坏和材料耗散。给出并讨论了一个简单例子的数值结果。结果表明，新的碰撞模型确实能够有效地描述可能的表面损伤效应，特别是，如果在激发时间段内观察到多个碰撞。
In this paper, a new pounding model is presented, which allows for the modification of the pounding condition during the excitation time period. The formulation consists of a Hertz spring, a nonlinear damping, and a dry friction element. In this respect, the gap function, i.e., the condition for penetration, is extended. This allows for an efficient pounding description, including possible damage and material dissipation to be described within the potential collision regions of the structures. Numerical results on a simple example are presented and discussed. It is shown that the new pounding model is indeed able to efficiently describe possible surface damage effects, in particular, if multiple collisions are observed during the excitation time period.