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Stress intensity factors under combined bending and torsion moments

This paper discusses stress intensity factor (SIF) calculations for surface cracks in round bars subjected to combined torsion and bending loadings.Different crack aspect ratios, nib, ranging from 0 0 to 1.2 and relative crack depths, a/D, ranging from 0, I to 0.6 were considered Since the loading w...

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தலைமை எழுத்தாளர்கள்: Ismail, Al Emran, Ariffin, Ahmad Kamal, Abdullah, Shahrum, Ghazali, Mariyam Jameelah, Abdulrazzaq, Mohammed, Daud, Ruslizam
வடிவம்: கட்டுரை
வெளியீடப்பட்டது: Zhejiang University Springer 2012
பகுதிகள்:
TA401-492 Materials of engineering and construction. Mechanics of materials
நிகழ்நிலை அணுகல்:http://dx.doi.org/10.1631/jzus.A1100040
http://dx.doi.org/10.1631/jzus.A1100040
http://eprints.uthm.edu.my/3864/1/al_emran_ismail_2_U.pdf
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தொகுப்பு:This paper discusses stress intensity factor (SIF) calculations for surface cracks in round bars subjected to combined torsion and bending loadings.Different crack aspect ratios, nib, ranging from 0 0 to 1.2 and relative crack depths, a/D, ranging from 0, I to 0.6 were considered Since the loading was non-symmetrical for torsion loadings, a whole finite element model was constructed, Then, the individual and combined bending and torsion loadings were remotely applred to the model. The equ~valent SIF method, F ; ~ ,w as then used explicitly to combine the individual SlFs from the bending and torsion loadings A comparison was then carried out with the combined SIF, F*FE obtained using the finite element analysis (FEA) under similar loadings. It was found that the equivalent SIF method successfully predicted the combined SIF for Mode I However, discrepancies between the results determined from the different approaches occurred when FIII was involved It was also noted that the predicted F*FE FEA was higher than the F*EQ predicted through the equivalent SIF method due to the difference in crack face interactions.

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