| KDP晶体超精密切削过程中等效应力和应变分析 |
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| 引用本文： | 王洪祥,高石,黄志群,王健,候晶.KDP晶体超精密切削过程中等效应力和应变分析[J].材料科学与工艺,2008,16(3):326-329,334. |
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| 作者姓名： | 王洪祥 高石 黄志群 王健 候晶 |
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| 作者单位： | 哈尔滨工业大学,机电工程学院,哈尔滨,150001;成都精密光学工程研究中心,成都,610041 |
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| 基金项目： | 国家自然科学基金委员会-中国工程物理研究院(NSAF)联合基金
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哈尔滨市科技创新人才研究专项资金资助项目 |
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| 摘 要： | 为了深入研究刀具几何参数对KDP晶体超精密切削过程的影响,以及等效应力和应变产生的原因及变化规律,采用商用有限元软件(Marc)对KDP晶体的超精密切削过程进行了有限元仿真,建立了KDP晶体超精密切削加工中应力和应变预测模型.仿真结果表明,KDP晶体超精密加工过程中等效应力主要集中在第一和第二变形区,等效应变主要集中在第二和第三变形区.研究表明,本文所建立的等效应力和应变预测模型是有效的,有限元仿真值与预测值之间的误差可以控制在10%以内.
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| 关 键 词： | KDP晶体 应力 应变 有限元分析 |
Analysis on equivalent stress and strain of KDP crystals in ultra-precision machining process |
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| WANG Hong-xiang,GAO Shi,HUANG Zhi-qun,WANG Jian,HOU Jing.Analysis on equivalent stress and strain of KDP crystals in ultra-precision machining process[J].Materials Science and Technology,2008,16(3):326-329,334. |
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| Authors: | WANG Hong-xiang GAO Shi HUANG Zhi-qun WANG Jian HOU Jing |
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| Affiliation: | 1.School of Mechanical Electrical Engineering,Harbin Institute of Technology,Harbin 150001,China,2.Chengdu Fine Optical Engineering Research Centre,Chengdu 610041,China) |
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| Abstract: | In order to reveal the influence of tool geometry on ultra-precision machining process of KDP crystals,the generation mechanisms and their changing laws of equivalent stress and equivalent strain were investigated.The ultra-precision machining process of KDP crystals was simulated using finite element simulation software Marc,and prediction models of the equivalent stress and equivalent strain were developed.The results show that the equivalent stress is mostly found existing in Ⅰand Ⅱ deformation areas,and the equivalent strain is mostly found existing in Ⅱand Ⅲ deformation areas.The prediction models can predict the equivalent stress and equivalent strain effectively,and the relative errors can be controlled within 10%. |
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| Keywords: | KDP crystals stress strain finite element |
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