The Influence of Blind-Hole Depth and Bore to Strain Energy Relief Coefficients-a Case Study

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Abstract:

In order to improve measurement accuracy and for choosing the best ratio of hole depth to bore (h/d), a model based on 16Mn was setup for studying the influence of different hole depth h and bore d to the coefficients with finite element method (FEM). The stress and strain on hole edge was simulated and the influence of h/d to the strain relief coefficient A, B were studied. By applying different loads, the relation of A, B vs. stress σ was studied under the conditions of σ=1/3σs. The results showed that more accurate coefficients were achieved when h/d was set to 1.25.

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Advanced Materials Research (Volumes 479-481)

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1993-1996

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February 2012

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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[1] Mathar J.Determination of initial stresses by measuring the deformations around drilled holes .Trans.ASME,1934,4, pp.249-254.

DOI: 10.1115/1.4019712

Google Scholar

[2] Wang,HS.,The Algnment error of the Holl-Drilling Method.Experirmental Mechanics, 1979,1, pp.23-37.

Google Scholar

[3] O.Sicot X.L.GONG,A Cherouat,J.Lu.Influence of experimental Parameters on Determination of residual.Composites Science and Technology 2004,64, pp.171-180.

DOI: 10.1016/s0266-3538(03)00278-1

Google Scholar

[4] Jian Cuixiang,Xiong Jianming,Yu Tianqin. The test of the welding residual stress on the thick plate. The journal of Hubei Institute of Technology,2000, 15(1), pp.6-8.

Google Scholar

[5] Pei Yi,Bao Yafeng,Tang Muyao. Study on the A, B values in calculating formula of blind-hole technique. Journal of mechanical strength,1997, 19(l), pp.18-21.

Google Scholar

[6] Zhang Xiaopeng,Wang Na. Measurement of welding residual stress in the heavy converter using blind-hoal methord. Mechanics and Practice 2007,29(3),pp.45-49.

Google Scholar

[7] Hou Hailiang,Zhu Xi.Liu Runquan. Femanalysison the strain release factors formeasuring welding residual stressesusing blind-hole method. Journal of mechanical strength,2003,25(6),pp.632-636.

Google Scholar

[8] Liu Xiaohong.The residual stress and strain release coefficient of finite element analysis.Machinery desing and manufacture.2001,5.pp.9-11.

Google Scholar