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透明光学材料中缺陷吸收激光能量引起的热应力与断裂
Thermal stress and fracture in transparent optical materials due to laser energy-absorption by a defect
查看参考文献8篇
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文摘
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利用热弹性理论分析了在光学材料中由于缺陷吸收激光能量引起的温度和热应力分布，并且针对一个简单的裂纹模型分析了热应力产生的应力强度因子，给出了一些主要参数对于应力强度因子的影响的规律。 |
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其他语种文摘
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This paper presents the distributions of temperature and thermal stress in the transparent optical materials, resulting from the laser energy-absorption of a defect. When the defect is point-like, the maximum value of normal stress in y-direction locates on the boundary. With the increase of x, the stress decreases obviously. But when there exists a line flow, the normal stress in y-direction is minimum at the boundary and is singular at the two ends of the linear flaw. Based on a simple crack model, the relative stress intensity factor (SIF) and effects of various parameters on SIF were analyzed. The results show that, in the case of point-like defect, SIF increases monotonously with the enlargement of the ratio between the crack length and the distance from the defect to the boundary line. However, the effect of the ratio on SIF is more complex, when the flaw is linear. The method adopted in this paper can be expanded to analyze planar flaw or the parallel multi-flaws. |
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来源
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强激光与粒子束
,2002,14(2):213-217 【核心库】
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关键词
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热应力
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应力强度因子
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激光效应
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断裂力学
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光学材料
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地址
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中国科学院力学研究所, 北京, 100080
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1001-4322 |
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学科
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力学 |
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基金
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国家自然科学基金
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国家863计划
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文献收藏号
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CSCD:1016511
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参考文献 共
8
共1页
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1.
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光学学报,1997,17(1):20-23
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被引
16
次
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2.
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激光的热和力学效应学术会议论文集,2000:1-7
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被引
6
次
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3.
Kim W S. Thermoelastic stresses in a bonded layer due to repetitively pulsed laser radiation.
Acta Mechanica,1997,125:107-128
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被引
3
次
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4.
梅蓝 E.
由于定常温度场面产生的热应力,1955
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被引
1
次
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5.
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应力强度因子手册,1982
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被引
4
次
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6.
杜少军. 激光窗口形状对应力和光束位相影响的数值计算.
强激光与粒子束,2000,12(3):273-276
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被引
2
次
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7.
陈小伟. 热力联合作用弹性薄圆板的弯曲与屈曲.
强激光与粒子束,1998,10(4):531-536
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被引
3
次
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8.
罗福. 1.06μm连续激光照射下K9玻璃板的应力松驰破坏.
强激光与粒子束,2001,13(1):19-23
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被引
11
次
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