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Separation of contact stress components by moire interferometry
Authors:Ming Li  Jue Zhang  Chong Wu  Jing Fang
Institution:(1) College of Engineering, Peking University, Beijing, 100871, China
Abstract:A hybrid technique of combining moiré measurement and analytical solution is developed to separate the normal and the tangential components of distributed contact stresses between two co-plane bodies. The moiré interferometry offers the displacement fields near the deformed contact zone, from which the tangential strains and boundary slopes of the deformed configurations can be evaluated. Those experimental results provide boundary conditions for the discrete integration of Flamant’s solutions, to inversely compute the separated components of the contact stresses. The project supported by the National Basic Research Program (2007CB935602), the National Natural Science Foundation of China (90607004) and the ICM Fund of CAEP (42105080106).
Keywords:Moiré patterns  Contact deformation  Experimental/analytical hybrid solution
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