MEASUREMENTS FOR DYNAMIC DEFORMATION BY MISMATCH WHITE SPECKLE METHOD

Applied Mathematics and Mechanics (English Edition) ›› 1986, Vol. 7 ›› Issue (9): 895-902.

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MEASUREMENTS FOR DYNAMIC DEFORMATION BY MISMATCH WHITE SPECKLE METHOD

Chen fang, Cao Zheng-yuan, Fang Ru-hua, Chen Ping-ping

Laboratory of Photo-Mechanics, Department of Engineering Mechanics, Tongji University, Shanghai

Received:1985-11-01 Online:1986-09-18 Published:1986-09-18

Abstract

Abstract: This paper presents a simple method for measurements, of dynamic deformation by mismatch white speckle method using dynamic photoelastic device. The method is able to measure not only large dynamic deformation^[1], but also small dynamic deformation. Combined with dynamic isochromatepattern, the elastic modulus Poisson’s ratio and dynamic material fringe value of the material measured can be obtained by the method.

Key words: finite element, hybrid method, zero energy-error, coarse-mesh-accuracy

Chen fang;Cao Zheng-yuan;Fang Ru-hua;Chen Ping-ping. MEASUREMENTS FOR DYNAMIC DEFORMATION BY MISMATCH WHITE SPECKLE METHOD. Applied Mathematics and Mechanics (English Edition), 1986, 7(9): 895-902.

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MEASUREMENTS FOR DYNAMIC DEFORMATION BY MISMATCH WHITE SPECKLE METHOD

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