Investigation of Crack Line Offset of Fracture Splitting Connecting Rod

Hong Yu Yang; Shu Qing Kou; Wen Qiang Gao; Shen Hua Yang

doi:10.4028/www.scientific.net/AMM.472.100

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 472Investigation of Crack Line Offset of Fracture...

Investigation of Crack Line Offset of Fracture Splitting Connecting Rod

Abstract:

Fracture line offset is the main defect in connecting rod fracture splitting processing, which seriously affects the using performance of connecting rod. In order to control this defect more effectively, the basic reason why this defect occurs was researched according to the theory of fracture mechanics, and the method of numerical simulation was used in this paper. The results show that when the applied load is nonparallel to the axis of a connecting rod, the first principle stress on the theoretical fracture surface is not perpendicular to the theoretical fracture line and the stress distribution is asymmetric on both sides of notches, which leads the type of fracture to turn into mixed mode I-II from mode I. As a result, the defect of fracture line offset occurs. Furthermore, the main factors leading to skew load were analyzed in actual production, and some effective measures were proposed to avoid the occurrence of this defect. This is significant in controlling the quality of connecting rod fracture splitting.

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Periodical:

Applied Mechanics and Materials (Volume 472)

Pages:

100-104

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.472.100

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Online since:

January 2014

Authors:

Hong Yu Yang, Shu Qing Kou, Wen Qiang Gao, Shen Hua Yang

Keywords:

Crack Line Offset, Crack Propagation, Mixed Mode Fracture, Splitting Fracture of Connecting Rod

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References

[1] Gu Z, Yang S, Ku S: Fracture splitting technology of automobile engine connecting rod. The International Journal of Advanced Manufacturing Technology, Vol. 25(2005), pp.883-887.

DOI: 10.1007/s00170-003-2022-2

Google Scholar

[2] Kou S Q, Wang J W, Zheng Q F: Numerical analysis of the temperature field generated during the production of a fracture notch in a C70S6 steel connecting rod using a Nd: YAG laser. Lasers in Engineering, Vol. 21(2011), pp.115-127.

Google Scholar

[3] Murray W M: Fatigue and fracture of metals. Technology Press of The Massachusetts Institute of Technology, (1950).

Google Scholar

[4] Kanninen M F, Popelar C L: Advanced fracture mechanics. Oxford: Oxford University Press, (1985).

Google Scholar

[5] Kuang Z B, Ma F S: Crack tip fields. Xi'an Jiao Tong University Press, (2001).

Google Scholar

[6] Erdogan F, Sih G C: On the crack extension in plates under plane loading with transverse shear. Journal of Basic Engineering, Vol. 85(1963), pp.519-527.

DOI: 10.1115/1.3656897

Google Scholar