弹簧冲击器溯源过程中的碰撞接触力特性研究

doi:10.3969/j.issn.1000-1158.2024.10.12

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摘要为了提升弹簧冲击器校准装置溯源工作的测量准确度,完整评估其溯源工作中冲击端碰撞过程的能量损失,引入Newton恢复系数e,结合广义接触力模型对溯源装置的冲击端碰撞过程进行动力学建模并进行数值仿真分析。研究结果表明:考虑Newton恢复系数e时的最大接触力大于未考虑时的最大接触力,且随着Newton恢复系数e的增大,最大接触力呈现非线性增加;Newton恢复系数e对碰撞过程中的相对形变量几乎无影响;结合实验结果,当e=0.8时的仿真结果与实测值接近,相对误差约为2%。

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	高建卓
	陈龙
	汪宁溪
	骆昕

关键词 ：力学计量, 弹簧冲击器, Newton恢复系数, 校准装置溯源, 碰撞力学模型, 数值仿真

Abstract：In order to improve the measurement accuracy of the spring hammer calibration device in the traceability work, and fully evaluate the energy loss in the impact end collision process of the traceability work, Newton restitution coefficient is introduced. And combined with the generalized contact force model, the dynamic modeling and numerical simulation analysis on the impact end collision process of the traceability device are carried out. The results show that the maximum contact force with Newton restitution coefficient is larger than that not considered, and the maximum contact force increases nonlinearly with the increase of Newton restitution coefficient, there is almost no effect on the relative deformation during the collision. Based on the experimental results, the simulation results are closest to the measured values when e=0.8, with a relative error of about 2%.

Key words： mechanical metrology spring hammer Newton restitution coefficient calibration device traceability impact force model numerical simulation

收稿日期: 2023-04-18 发布日期: 2024-09-30

PACS:

TB936

基金资助:国家市场监管总局科技计划(2022MK004); 北京市计量院自主科研项目(KJ2021-21)

作者简介: 高建卓(1992-),北京市计量检测科学研究院工程师,主要从事力学计量、机械设计方面的研究。Email: gaojz@bjjl.cn

引用本文:

高建卓,陈龙,汪宁溪,骆昕. 弹簧冲击器溯源过程中的碰撞接触力特性研究[J]. 计量学报, 2024, 45(10): 1520-1524.
GAO Jianzhuo,CHEN Long,WANG Ningxi,LUO Xin. Research on Characteristics of Collision Contact Force During Traceability Process of Spring Hammer. Acta Metrologica Sinica, 2024, 45(10): 1520-1524.

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