Fatigue-Fracture Solution of Iron Wire under Pseudo-Periodic Strain

Jing Jing Wang; Jian Hua Xiao

doi:10.4028/www.scientific.net/AMM.750.69

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 750Fatigue-Fracture Solution of Iron Wire under...

Fatigue-Fracture Solution of Iron Wire under Pseudo-Periodic Strain

Abstract:

Under pseudo-periodic strain, the thermo-effect plays an important role in the fatigue fracture of material. How to construct the related mechanics model is a practical issue. For simple bending of iron wire under pseudo-periodic, based on local rotation concept, the deformation is described by the local rotation angle. Then, the related motion equations are used to obtain the theoretical form of life-strain rate relation. The results show that: (1) The local rotation angle rate can represent thermo-effects well; (2) The fatigue fracture is nucleated at the position of maximum local rotation angle; (3) The intrinsic mechanism of fatigue fracture of the material is the local rotation.

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Periodical:

Applied Mechanics and Materials (Volume 750)

Pages:

69-75

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.750.69

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Online since:

April 2015

Authors:

Jing Jing Wang, Jian Hua Xiao*

Keywords:

Fatigue-Fracture, Local Rotation Angle, Non-Linear Motion Equation, Rational Mechanics, Simple Bending of Rod, Strain Rate

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* - Corresponding Author

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