基于非线性连续介质损伤力学方法的微动疲劳寿命预测

doi:10.7527/S1000-6893.2013.0077

Abstract

Abstract:

Fretting damage is known as an "industrial cancer". In order to predict fretting fatigue life accurately, a new fretting fatigue life prediction method is developed which is based on the non-linear-continuous-damage (NLCD) model. The new developed NLCD model applies to the fretting fatigue life prediction, which is modified by an equivalent plastic strain amplitude of the critical plane based on the Chaboche NLCD model. The fretting fatigue life of bridge-type smooth specimens and dovetail joints is got by the new model. Comparing with the experimental results of the literature, all of the estimated fretting fatigue life by developed NLCD model fall within the scatter bands of ±2N (±50%), and the predicted crack initiation location show good agreement with experimental results, which verifies the effectiveness of the proposed method.

Key words: fretting fatigue, life prediction, continuum damage mechanics, multi-axial fatigue, dovetail joint, titanium alloy

CLC Number:

V231.95

LI Aimin, CUI Haitao, WEN Weidong, SHI Wei. Prediction of Fretting Fatigue Life Based on Nonlinear Continuum Damage Mechanics[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2013, 34(9): 2122-2129.

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Prediction of Fretting Fatigue Life Based on Nonlinear Continuum Damage Mechanics

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