Dr. Dong Yan Profile

Dr. Dong Yan

at Beijing Institute of Technology

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Proceedings Article | 11 November 2010 Paper

Computer simulation of photomechanics

Dong Yan, Shaopeng Ma

Proceedings Volume 7855, 785503 (2010) https://doi.org/10.1117/12.871332

KEYWORDS: Interferometry, Photoelasticity, Computer simulations, Mechanics, Finite element methods, Algorithm development, Speckle pattern, Virtual reality, Fringe analysis, Speckle

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Photomechanics, one kind of interferometry based experimental methods used to measure the mechanical quantities, can provide interferometric fringes using specially designed optical setups. Analysis of mechanical quantities from the interferometric fringes needs good understanding of their distribution, which is often not easy when analyzing a complicated model. At this time, the simulation of the experimental results on similar models will greatly improve the experimental data processing of photomechanics. Moreover this simulation will also greatly contribute to the teaching of photomechanics. In this paper, a basic framework for photomechanics simulation is firstly proposed. The specific algorithms for simulation of the two important photomechanics methods, photoelasticity and electronic speckle pattern interferometry (ESPI), are developed. A photomechanics simulation system containing photoelasticity and ESPI is constructed. When simulation, the distribution of the mechanical quantities is firstly calculated using finite element method (FEM), and then the interferometric fringes are generated through the virtual realization of the interferometric procedure in the corresponding optical setup. The whole simulation procedure is realized with the Matlab software. Comparison between the results from simulation and the real experiment shows the validity of the simulation algorithms.

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