DYNAMIC PHOTOELASTIC STUDIES OF WAVE-PROPAGATION IN ANTIGRANULOCYTES MEDIA

被引：33
作者：
SHUKLA, A
机构：
[1] Dynamic Photomechanics Laboratory, Department of Mechanical Engineering and Applied Mechanics, University of Rhode Island, Kingston
来源：
OPTICS AND LASERS IN ENGINEERING | 1991年 / 14卷 / 03期
关键词：
D O I：
10.1016/0143-8166(91)90047-W
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The optical method of dynamic photoelasticity is used to visualize the load transfer profiles due to explosive loading in granular aggregates. The granular media are simulated by using arrays of disks fabricated from a brittle polyester material-Homalite 100. Attention is focused on the effect of microstructure or the geometrical packing of the grains on the wave propagation phenomena. The experimental data are analyzed to obtain the stress wave attenuation, wave velocities and contact stresses as a function of time along various directions in the assembly of grains. Dynamic load transfer functions are developed to predict dynamic contact loads in any systematic or random assembly of grains for any given loading. The predicted results are compared with the experimental data. The effect of local inhomogeneities on the wave propagation phenomena is also shown.
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页码：165 / 184
页数：20
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