| 新型各向异性核工业石墨断裂力学行为的实验研究和数值分析 |
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| 引用本文： | 舒庆琏,佟景伟,杨楠,卢秀荣,王成杨.新型各向异性核工业石墨断裂力学行为的实验研究和数值分析[J].实验力学,2003,18(4):490-494. |
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| 作者姓名： | 舒庆琏 佟景伟 杨楠 卢秀荣 王成杨 |
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| 作者单位： | 1. 天津大学,机械工程学院力学系
2. 天津大学,材料科学与工程学院,天津,300072 |
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| 基金项目： | 国家自然科学基金资助项目(19772030)和(10172065) |
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| 摘 要： | 本文分别采用激光和白光DSCM(数字散斑相关测量)方法对一种新型各向异性核工业石墨的裂纹尖端位移、应变场进行了实验研究，两种方法都取得了较好的结果。考虑核工业石墨制备过程形成的各向异性特点，本文构建了三维各向异性有限元模型，采用奇异单元，计算模拟石墨裂纹尖端的变形和应力场，通过对实验结果和有限元计算结果的比较可以发现两者具有相近的趋势。
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| 关 键 词： | 各向异性石墨 数字散斑相关测量 裂纹尖端位移 应变场 奇异单元 核聚变反应 核减速剂 剪切模量 |
| 文章编号： | 1001-4888(2003)04-0490-05 |
| 修稿时间： | 2002年8月17日 |
DSCM Experiment and Analytical Study for the Fracture Behavior of Anisotropy Nuclear Graphite |
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| SHU Qing-Lian,TONG Jing-Wei,YANG Nan,LU Xiu-rong,WANG Cheng-yang.DSCM Experiment and Analytical Study for the Fracture Behavior of Anisotropy Nuclear Graphite[J].Journal of Experimental Mechanics,2003,18(4):490-494. |
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| Authors: | SHU Qing-Lian TONG Jing-Wei YANG Nan LU Xiu-rong WANG Cheng-yang |
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| Institution: | SHU Qing-Lian~,TONG Jing-Wei~,YANG Nan~,LU Xiu-rong~,WANG Cheng-yang~ |
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| Abstract: | The laser DSCM and white light DSCM are adopted to study the crack tip field of anisotropic nuclear graphite material, The experiment indicates that both white light DSCM and light DSCM can be used to examine the elastic-plastic field of displacement and strain near the crack tip. As an analytical study, a 3D orthotropic FEM model is also adopted to pick up the singularity in the strain and stress at the crack tip, where singular elements are used around the crack tip. Comparing the results of experiment and FEM, it was found that the results fit well. |
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| Keywords: | DSCM field of stresses and strains near crack tip singular elements |
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