WANG Li,LAN Wenzheng,XU Jiahui.Analysis on the uncertainty of rotational inertia and torsional constant of torsion pendulum[J].Journal of Yanbian University,2018,44(04):348-352.
扭摆转动惯量和扭转模量的不确定度测量分析
- Title:
- Analysis on the uncertainty of rotational inertia and torsional constant of torsion pendulum
- Keywords:
- rotation intertia; torsion constant; uncertainty
- 分类号:
- O4-34
- 文献标志码:
- A
- 摘要:
- 根据不确定度理论,推导了转动惯量和扭转模量的不确定度传递公式.以DH4601扭摆转动惯量测试仪为试验装置,对实例数据进行了计算.结果表明:利用DH4601扭摆转动惯量测试仪测得的转动惯量和扭转模量的相对不确定度比文献[5-8,10]所给出的结果更小,说明该实验仪器的测量结果更为准确和可靠.本文结果可对测量刚体转动惯量实验的实验方法选择和仪器参数的标定提供参考.
- Abstract:
- According to the uncertainty theory, the uncertainty transfer formulas of moment of inertia and torsion modulus are derived. With DH4601 torsional pendulum moment of inertia tester as the experimental device, the moment of inertia and the torsional modulus of the suspension line are measured. The results show that the uncertainty of rotation inertia and torsion constant of DH4601 torsion pendulum is smaller than that of the literature [5-8,10], the measurement results of the instrument are more accurate and reliable. Which have importantly practical significance to choosing experimental methods and calibrating instrument parameters.
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相似文献/References:
[1]申惠娟,陈锺贤.扭摆法测量刚体转动惯量的误差定量分析[J].延边大学学报(自然科学版),2013,39(03):199.
SHEN Huijuan,CHEN Zhongxian.Quantitative error analysis for moment of inertia using torsion pendulum method[J].Journal of Yanbian University,2013,39(04):199.
[2]张大伟,王丽,滕继慧,等.扭摆法测转动惯量摆长最佳值的探究[J].延边大学学报(自然科学版),2017,43(02):125.
ZHANG Dawei,WANG Li,TENG Jihui,et al.The exploration of rotational inertia for optimal length by torsion pendulum method[J].Journal of Yanbian University,2017,43(04):125.
备注/Memo
收稿日期: 2018-04-24 作者简介: 王丽(1983—),女,讲师,研究方向为原子与分子物理、大学物理实验.
基金项目:营口理工学院院级教改课题(JG201715); 营口理工学院院级教学团队项目(JT201705); 营口理工学院院级精品资源共享课项目(JP201713)