Stress intensity factors with the surface cracked plate of commercial pure titanium TA2 under compression

Zhang Yuchen; Yao Ximing; Pei Qi; Zhou Changyu; He Xiaohua

doi:10.7513/j.issn.1004-7638.2023.02.010

Volume 44 Issue 2

Apr. 2023

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Zhang Yuchen, Yao Ximing, Pei Qi, Zhou Changyu, He Xiaohua. Stress intensity factors with the surface cracked plate of commercial pure titanium TA2 under compression[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(2): 67-76. doi: 10.7513/j.issn.1004-7638.2023.02.010

Citation:

Zhang Yuchen, Yao Ximing, Pei Qi, Zhou Changyu, He Xiaohua. Stress intensity factors with the surface cracked plate of commercial pure titanium TA2 under compression[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(2): 67-76. doi: 10.7513/j.issn.1004-7638.2023.02.010

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Stress intensity factors with the surface cracked plate of commercial pure titanium TA2 under compression

doi: 10.7513/j.issn.1004-7638.2023.02.010

School of Mechanical and Power Engineering, Nanjing Tech University, Nanjing 211816, Jiangsu, China

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Received Date: 2022-11-17
Publish Date: 2023-04-30

Abstract

Abstract

The surface cracked plate of commercial pure titanium TA2 under compressive load was studied. The plate model with mixed mode semi-elliptical surface crack was established by finite element method, and the stress intensity factor was calculated. At the same time, the effects of stress intensity factor were investigated with different inclined angles (β), relative crack depths (a/t), aspect ratios (a/c), friction coefficients of crack surface (μ), lateral pressure coefficients (λ). The results show that the inclined angles and aspect ratios have significant effects on the stress intensity factor, while the crack relative depth has insignificant effects on the stress intensity factor. With the increase of friction coefficients and lateral pressure coefficients can significantly reduce the stress intensity factor and inhibit shear damage. Based on the finite element solutions of stress intensity factor, the equations of stress intensity factors K_Ⅱ and K_Ⅲ fit for plates with semi-elliptical surface crack under uniaxial compression were obtained by nonlinear regression. The results are of important reference for the safety assessment of structure with semi-elliptical surface crack of commercial pure titanium TA2 under compressive load.
- commercial pure titanium TA2,
- mixed mode surface crack,
- stress intensity factor,
- compressive load,
- finite element method

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References(22)

References

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