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working hole
相关语句
  相似匹配句对
     On Deep Hole Working
     深孔加工技术及其应用
短句来源
     on working
     在工作
短句来源
     THE HOLE
     洞
短句来源
     Cold Working of Al Alloy Fastener Hole
     铝合金孔的冷挤压强化
短句来源
     (2) hole;
     (2)穴状条纹型;
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Coldworking of fastener holes has been utilized as an effective technique in aerospace industry to enhance structural components'' fatigue and fracture performance. To quantify the benifical effects of coldworking, stress intensity factors for radial cracks in residual stress fields around the cold-worked hole must be known. Due to the complexity of residual stress distributions, the existing stress intensity factor solution methods are difficult to be used for such problems because they will be...

Coldworking of fastener holes has been utilized as an effective technique in aerospace industry to enhance structural components'' fatigue and fracture performance. To quantify the benifical effects of coldworking, stress intensity factors for radial cracks in residual stress fields around the cold-worked hole must be known. Due to the complexity of residual stress distributions, the existing stress intensity factor solution methods are difficult to be used for such problems because they will be loo complicated and time-consuming.in this paper an analytical method for the computation of stress intensity factors for a throuh-the-thickness radial crack at the edge of a circular hole has been presented. The method is based on tite weight function theory in fracture mechanics. The approach is versatile, cost-effective and simple-to-use. and the solution accuracy is very good. Stress intensity factors formulae for such cracks subjucted to various basic load distributions were derived. A technique enabling stress intensity factors to be determined with point-by-point loading specification for a number of points on the crack face was presented. The developed analytical expressions allow stress intensity factors for complex load situations to be determined with minimum efforts.The paper further made a detailed analysis for crack problems involving residual stress fields around a cold-worked hole. Fatigue crack propagation characteristics lor such cracks subjucted o combined action of external loading and residual stress were discussed. The results of this study can be used in quantitative damage-tolerance analysis for aerospace structures containing cold-worked or interference-fitted holes subjected to arbitrary external loading.

本文给出了复杂应力场中圆孔边穿透裂纹问题的权函数解析解和各种基本载荷作用下孔边裂纹的应力强度因子计算公式。并据此计算了冷挤压孔边残余应力场中裂纹的应力强度因子,进而讨论了裂纹在外载荷和残余应力共同作用下疲劳扩展的特点。

In this paper , the residual stresses around cold worked holes were measured by application of Laser speckle interferometry in combination with radial cutting method. The experimental technique was investigated , and thderrors were discussed. The results showed that the experimental method used to measure the residual srress in small area was uncomplicated and accurate.

本文采用径向切割法,同时配以双曝光激光散斑干涉技术测量了冷挤压孔周残余应力分布,对实验技术进行了研究,讨论了引起实验误差的主要来源,结果表明该实验方法在微小区域内残余应力分布时具有简单、精度高等优点。

A method of technological elastoplastic and residual strain analyses of preworked holes is presented based on the theoretical analyses for technological stress. The residual stress of symmetrical plane of aluminium plate with three kinds of pre-worked holes are studied by using them to release the residual strain and single beam laser speckle interferometry techniques. The feasibility of the method is verified.

在对工艺应力进行理论分析的基础上,提出了一种构件预挤压孔的工艺弹塑性和残余应变分析方法.通过采用释放残余应变的方法和单光束激光散斑干涉术,分析了三种不同挤压量带孔铝板的预挤压孔对称面上的残余应力,验证了这种分析方法的可行性.

 
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