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《China Mechanical Engineering》 2016-19
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Numerical Simulation and Analysis on Formation of Subsurface Damages of Optical Lenses

Ren Zhiying;Gao Chenghui;Chen Weiping;Lin Youxi;Fuzhou University;  
In view of the current research on the subsurface damages of the optical lenses,people mainly focused on the process parameters and abrasive particle size,distribution,and et al.Based on the theory of indentation fracture of brittle materials,this paper analysed a series of processes which led to subsurface damages of the optical lens,and then finished the micro dynamic simulation of the polishing process of optical lens surfaces under the different sharpness angles of the grains,and with the same load and the different processing speeds.Finley,this paper obtained the frictional contact,the stress and strain distribution and subsurface damages between abrasive and the lens'surface.The relationship among the relevant parameters of the subsurface damage depth of crack,the subsurface damage depth,hole volume removal rate,surface damage rate,abrasive sharpness angle and grinding speed was summed up.When the grinding grain sharpness angle is as 54~58degrees,the processing speed is as 7~8m/s,then with the required processing efficiency subsurface damages and the damage rate of the machined lenses are of the minimum.
【Fund】: 国家自然科学基金资助项目(51175085 51205062 51375094);; 福建省自然科学基金资助项目(2015J01195);; 清华大学摩擦学国家重点实验室开放基金资助项目(SKLTKF13B02);; 福州市科技局资助项目(2014-G-74)
【CateGory Index】: TG580.6
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