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孙宝元, 高长银
机械工程学报,2004,40(8):150~154,-0001,():
-1年11月30日
从各向异性弹性理论和麦克斯韦电磁理论出发,较系统地控讨了圆形压电石英晶片扭转效应理论,得出了扭转应力场与非线性极化电场分布规律,并采用有限元法求得了极化电荷电场在压电片内的分布,根据据理论分析,用分割电极法有效地在压电片表面布置了检测电极,理论与试验结果均表明电极检测的极化电荷量与外转矩成线性关系,理论与试验基本符合。这些研究为新型转矩传感器与测车仪的开发奠定了必要的理论基础。
压电,, 扭转效应,, 非线性极化,, 各向异性
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孙宝元, Changyin Gao, Baoyuan Sun and Min Qian
Meas. Sci. Technol. 14(2003)2021-2026,-0001,():
-1年11月30日
The torsional effect of a piezoelectric quartz disc and the distribution of torsion charge sensitivity are first investigated in this paper. The torsion stresses of a circular quartz disc are deduced by using the theoty of anisotropic elasticity, and then throuth the Maxwell electromagnetic theory and piezoelectricity the distribution of bound volume and surface charge densities is computed. In order to make use of the torsional effect of a quartz disc and redues the cross talk, the distribution of torsion charge sensitivity is investigated theoretiaclly by means of coordination transformation and verified experimentally. Based on theoretical analyses of the bound charge densities and torsion charge sensitivity, the detection electrodes are effectiely arranges on the surface of the piezoelectric disc. The theoretical and experimental results show that the charge measured is linear with the torque applied and the torsion quartz measuring cell is only sensitive to torque that is independent of axial and radial force.
piezoelectricity,, torsional effect,, torsion charge sensitivity,, anisotropy,, torsion quartz measuring cell
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孙宝元, 钱敏, 张军
大连理工大学学报,2001,41(2):127~134,-0001,():
-1年11月30日
较系统,扼要地回顾了作者20余年来在压电式传感器与测力仪,压电式执行器等方面的理论研究与产品开发情况。其中对压电效应的理论研究成果。如切向灵敏度分布。石英晶体扭转效应。多种能量间的物性效应等。作了比较详细的介绍。对所研发的压电式传感器与测力仪产品作了宏观介绍。最后,对作者目前在上述领域所做的工作和对未来研究工作的想法作了简要阐述。
sensor,, actuator/, cutting dynan on eter,, piezoelectric effect, physical effect, torsional effect
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孙宝元, Sun Baoyuan*, Wu Jiantong, Zhang Jun, Qian Min
Jouraal of Materials Processing Technology 139(2003)444-447,-0001,():
-1年11月30日
On the basis of the models adopted by Heckmann in 1925 and Thurston in 1994 describing physical effects in crystals, the first author established an expanded model at the beginning of 1999 describing the physical effects involving conversions among mechanical, electric, thermal and magnetic energies. In this thesis the authors investigate further to establish a more complete model endeavoring to include and explain the numerous physical effects of crystals explicitly. The principal effects and the coupled effects are illustrated in diagrams and expressions have been deduced analytically with the help of the thermodynamic method. A general expression for concerning physical effects in crystals is reached which can be seen as a natural deduction fron Onsager's theory. The new model will be helpful in the understanding of knowledge on physical effects and will be of great significance in investigations on sensors, actuators and senactuators.
Principal effect, Coupled effect, Constitutive equations
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