乒乓球恒力绳球网装置的研制及网沿受力后弹性形变研究

发布时间：2019-06-19 16:05

【摘要】：设计并制作一种恒力绳,依据力学原理建立受力后的形变模型,将其用作悬网绳,构建一种新型乒乓球恒力绳球网装置,并根据实验及所建模型计算并分析乒乓球作用力、球速及恒力绳牵引力等对球网网沿弹性形变的影响及恒力绳牵引力的合理值范围。结果表明,当恒力绳牵引力一定时,恒力绳及网沿的弹性形变量随作用力及球速的增大呈近似正比增加;在保持形变量恒定的情况下,随着乒乓球作用力及球速的增大,恒力绳牵引力呈二次方增加。综合分析,恒力绳球网装置实际应用时铅坠质量应调控在3.0~5.0 kg之间。该装置可实现球网拉紧程度的统一,有效缓解使用过程中网沿的松弛,并进行实时调整。
[Abstract]:A constant force rope is designed and manufactured, and the deformation model after force is established according to the mechanical principle, which is used as hanging net rope, and a new type of table tennis constant force rope ball net device is constructed. according to the experiment and the established model, the influence of table tennis force, ball speed and constant force rope traction force on the elastic deformation of the net along the elastic deformation of the net and the reasonable range of traction force along the constant force rope are calculated and analyzed. The results show that when the traction force of constant force rope is constant, the elastic shape variables of constant force rope and net edge increase approximately proportional to the increase of force and ball speed, and when the shape variable is kept constant, the traction force of constant force rope increases quadratic with the increase of table tennis force and ball speed. The comprehensive analysis shows that the quality of lead pendant should be controlled between 3.0 kg and 5.0 kg in practical application of constant force rope net device. The device can realize the unity of the tension degree of the ball net, effectively alleviate the relaxation of the mesh edge in the process of use, and adjust it in real time.
【作者单位】：燕山大学体育学院;河北建材职业技术学院;
【基金】：河北省社会科学基金项目(HB15TY003)
【分类号】：TS952.3;G846

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