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A nonlinear tennis racet model with modal damping

机译:具有模态阻尼的非线性网球拍模型

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摘要

This article presents a model for predicting the response of a tennis racket under impact stress. Parameter identification and basic phenomena analysis are performed with mechanical models and experiments carried out on the frame, the ball, natural gut and aramid fiber string beds, and impacts of the ball on string beds supported by a rigid frame. The composite frame is modeled with beam finite elements and teh string bed with a specifc element able to take into account the nonlinear behavior arising from the string material and from the hardening geometric phenomenon. The frame is linear and is reduced with a dynamic condensation method and a modal basis enables the damping to be introduced by experimental modal damping ratios. Then experimental serves validate the predicted impact response of the tennis racket.
机译:本文介绍了一种模型,用于预测碰撞应力下的网球拍的响应。参数鉴定和基本现象分析是用机械模型和在框架,球,天然肠道和芳族纤维纤维琴床上进行的实验和实验进行,以及球在刚性框架支撑的弦床上的冲击。复合框架用光束有限元和Te串床建模,具有能够考虑弦材料产生的非线性行为和从硬化几何现象的非线性元素。框架是线性的,并且用动态冷凝方法减小,并且模态基础使得能够通过实验模态阻尼比引入阻尼。然后实验服务验证网球拍的预测影响响应。

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