Computation of Theoretical Stress Concentration Factor of V Shaped Notch Tip

Abstract:

To obtain the crack life and value of the external load applied on the bar in the course of the bar precision cropping, the mathematic expression of the theoretical stress concentration factor in the tip of the V shaped notch containing its geometric parameters is built theoretically by analyzing the stress field distribution of V shaped notch tip and the stress intensity factor. The influences of the flare angle Φ, the radius at the groove bottom, and the groove depth d on the theoretical stress concentration factor are analyzed in detail and the obtained rational value is d/D=0.1 , s/D=0.015, Φ=90 in engineering practice. The analytical results show that the data obtained by the mathematic expression of theoretical stress concentration factor in the tip of the V shaped notch presented in the paper are coincident with the results of the corresponding parameters obtained by stress concentration manual in some extension.

• Periodical: Applied Mechanics and Materials (Volumes 152-154)
• Pages: 765-769
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.152-154.765
• Online since: January 2012
• Authors: Li Jun Zhang, Jie Qiong Xue, Yong Rui Zhao, Heng Fu Xiang
• Keywords: Low-Stress, Precise Cropping, Theoretical Stress Concentration Factor, V Shaped Notch

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