TB-EPUDC-015复合材料层压板的疲劳损伤模型(英文)

• 作 者: 林文强 唐晓卫
• 机 构: 东北大学,School of Mechanical Engineering and Automation Northeastern University,Shenyang 110004,China,
• 出 处: 材料与冶金学报
• 发表日期: 2007年01期
• 关键词: 复合材料层压板 fatigue capture illustrate 疲劳损伤 normalized remaining cracking 模型 stiffne

This paper develops a mathematical model for fatigue damage evolution in composite materials. The characteristics of damage growth in composite materials are studied and compared with those of damage growth in homogeneous materials. Continuum damage mechanics concepts are used to evaluate the degradation of composite materials under cyclic loading. A new damage accumulation model is proposed to capture the unique characteristics of composite materials. The proposed model is found to be more accurate than existing models, both in modelling the rapid damage growth at the early stages of life and near the end of fatigue life. The parameters of the proposed model are obtained from experimental data. A example is implemented to illustrate that the proposed model is able to accurately fit several different sets of experimental data.

This paper develops a mathematical model for fatigue damage evolution in composite materials. The characteristics of damage growth in composite materials are studied and compared with those of damage growth in homogeneous materials. Continuum damage mechanics concepts are used to evaluate the degradation of composite materials under cyclic loading. A new damage accumulation model is proposed to capture the unique characteristics of composite materials. The proposed model is found to be more accurate than existing models, both in modeling the rapid damage growth at the early stages of life and near the end of fatigue The parameters of the proposed model are obtained from experimental data. A example is implemented to illustrate that the proposed model is able to accurately fit several different sets of experimental data.