| 8结点等参位移模式在数字散斑相关方法上的应用 |
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| 引用本文： | 孙艳玲,何龙,张青,赵东.8结点等参位移模式在数字散斑相关方法上的应用[J].东北林业大学学报,2012(2):109-113,117. |
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| 作者姓名： | 孙艳玲 何龙 张青 赵东 |
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| 作者单位： | 北京林业大学;东北林业大学 |
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| 基金项目： | 北京市自然科学基金项目(2072013) |
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| 摘 要： | 在分析国内外数字散斑相关技术的基础上,引入近年来有限元、数字图像、数值分析等方面的技术和方法,提出了根据物体的实际变形假设的新的位移模式,即8结点等参位移模式。针对这一位移模式,首次开发出适合木材变形的数字散斑相关测试软件,并将用8结点等参位移模式的数字散斑相关方法得到的结果与Ansys有限元计算的结果进行比较,结果表明:采用8结点等参位移模式的数字散斑相关方法,在复杂应力、应变场的测试中准确可靠。
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| 关 键 词： | 8结点等参位移模式 数字散斑相关方法 断裂力学 木材 |
Application of 8-node Isoparametric Element to Digital Speckle Correlation Method |
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| Sun YanlingBeijing Forestry University,Beijing,P.R.China;He LongNortheast Forestry University;Zhang Qing,Zhao Dong.Application of 8-node Isoparametric Element to Digital Speckle Correlation Method[J].Journal of Northeast Forestry University,2012(2):109-113,117. |
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| Authors: | Sun YanlingBeijing Forestry University Beijing PRChina;He LongNortheast Forestry University;Zhang Qing Zhao Dong |
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| Institution: | (Beijing Forestry University) |
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| Abstract: | A new displacement mode,namely 8-node isoparametric element,was provided on the basis of an assumption of using the real deformation of objects to fit complicated deformation,by introducing the methods of finite element,digital image processing and numerical analysis in recent years,as well as analyzing digital speckle correlation methods at home and abroad.Effective software related to digital speckle was developed to test deformation in wood.The results of digital speckle correlation method were compared with those of finite element method.Results show that the precision and authenticity of digital speckle correlation method with 8-node isoparametric element is validated in complicated deformation. |
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| Keywords: | 8-node isoparametric element Digital speckle correlation method Fracture mechanics Wood |
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