| 李斌,杨国标*.光弹性-数字散斑相关混合法在光弹条纹主应力分解中的应用[J].实验力学,2013,28(2):180~186 |
| 光弹性-数字散斑相关混合法在光弹条纹主应力分解中的应用 |
| On the Application of Photoelasticity-Digital Speckle Correlation Hybrid Method in Separation of Main Stress Photoelastic Fringes |
| 投稿时间：2012-09-14 修订日期：2012-12-06 |
| DOI：10.7520/1001-4888-12-115 |
| 中文关键词: 光弹性 数字散斑相关 混合法 等色线条纹 主应力分离 |
| 英文关键词:photoelasticity digital speckle correlation hybrid method isochromatics separation of principal stress |
| 基金项目:国家自然科学基金（10972160）,国家自然科学基金（11272239）资助 |
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| 中文摘要: |
| 光弹性法是研究结构内部应力分布问题的一个有效方法。光弹性实验中,通常可以方便地得到等色线条纹图。确定了等色线条纹级数以后,为获得平面模型中任意点的应力完全解,需要借助其它方法给出一个补充方程。本文将光弹性法与数字散斑相关法相结合,提出一种用于光弹性法分离主应力的新方法:光弹性-数字散斑相关混合法。在理论研究的基础上,设计了光弹性-数字散斑相关混合法实验系统,并通过相应的三点弯曲实验对该方法和实验系统的有效性做出分析和论证。该研究为光弹全场应力分解以及动态光弹性-数字散斑相关混合法提供了理论和实验基础。 |
| 英文摘要: |
| Photoelasticity is an effective method for structure internal stress distribution study, and is widely applied in engineering practice. Separation of principal stress is the key and difficult point in data analysis. In order to achieve that, an additional fuction is necessary. In this paper, Photoelasticity-Digital Speckle Correlation Hybrid Method is introduced to this problem. This method has combined photoelasticity method with digital speckle correlation method. On the basis of theory study, experimental system for Photoelasticity-Digital Speckle Correlation Hybrid Method were also designed. Corresponding three-point bending experiment was carried out to verify the effectiveness of this experimental system.This study may provide theoretical and experimental foundation for Dynamic Photoelasticity-Digital Speckle Correlation Hybrid Method. |
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