One Numerical Simulation Method and its Applications for Fatigue Crack Growth

Long Chen; Li Xun Cai; Xue Wei Huang; Chen Bao

doi:10.4028/www.scientific.net/AMM.117-119.180

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 117-119One Numerical Simulation Method and its...

One Numerical Simulation Method and its Applications for Fatigue Crack Growth

Abstract:

Abstract: Based on the Miner′s linear accumulative damage theory and the low cycle fatigue damage parameter that is relative to the total strain amplitude and the mean stress of the plastic zone near crack tip, a new numerical simulation method to predict the fatigue crack growth (FCG) of materials is presented. The numerical FCG results for middle-cracked tension (MT) specimens of Cr2Ni2MoV steel, TA12 and TC4 alloys by ANSYS are closed to those by tests. Therefore, the new method has capability to give good FCG prediction accuracy for different materials. Furthermore, the Paris FCG models of TA17 and TC11 alloys were predicted by this method and can be referred to the key engineerings.

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Periodical:

Applied Mechanics and Materials (Volumes 117-119)

Pages:

180-185

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.117-119.180

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Online since:

October 2011

Authors:

Long Chen, Li Xun Cai, Xue Wei Huang, Chen Bao

Keywords:

Elastic-Plastic Finite Element Method, Fatigue Crack Propagation, Low Cycle Fatigue Damage, MT Specimen

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