摘要
钢桥的疲劳破坏是由于微裂纹在循变荷载作用下萌生、发展而来。文章利用损伤力学分析钢桥构件的微观裂纹和宏观裂纹的形态、特征及发展过程,建立有限元模型分析裂纹的发展状态,并通过数学模型评估了钢桥的剩余寿命。
The fatigue damage of steel bridge is caused due to the initiation and evolvement of micro- cracks under the impact of varying loads. The article used the damage mechanics to analyze the morphology, characteristics and develop- ment process of microscopic cracks and macroscopic cracks of steel bridge components, established the finite element model to analyze the development state of cracks, and through the mathematical models it assessed the remaining life of steel bridge.
出处
《西部交通科技》
2013年第9期66-69,75,共5页
Western China Communications Science & Technology
基金
国家自然科学基金"基于灾变链式理论的多种灾害深化规律探索"(编号:50879097)
关键词
损伤力学
疲劳裂纹
寿命评估
Damage mechanics
Fatigue crack
Life assessment
