横向载荷下复合材料层合板疲劳分析  

Fatigue Analysis of Composite Laminates under Lateral Load

作　　者：熊铃华[1,2] 王璠[1,2] 

机构地区：[1]暨南大学力学与土木工程系,广东广州510632 [2]暨南大学应用力学研究所教育部"重大工程灾害与控制"重点实验室,广东广州510632

出　　处：《材料科学与工程学报》2011年第3期358-361,共4页Journal of Materials Science and Engineering

基　　金：国家自然科学基金资助项目(10572054);教育部科学技术研究重点资助项目(106156)

摘　　要：疲劳破坏是结构失效的主要原因之一。基于复合材料各向异性层合板的宏观力学理论,分析在横向交变载荷作用下层合板的应力场。结合材料的S-N曲线和累积损伤原理,建立局部名义应力与结构整体寿命相关联的疲劳寿命预测模型,计算层合板的疲劳损伤和寿命。采用名义应力的方法估算复合材料层合板的疲劳寿命较为便捷和直观。Fatigue failure is one of the main reasons for structural failure.Based on macroscopic mechanical theory of aeolotropic laminate,analysis of the stress field of laminate under lateral alternating load was carried out.With material＇s s-n curves and cumulative damage theory,a fatigue life predict model was established,in which local nominal stress and fatigue life are associated for calculating laminate＇s fatigue damage and life.It is convenient and intuitionistic to use the nominal stress method for estimating laminate＇s fatigue life.

关 键 词：层合板 疲劳寿命 名义应力 

分 类 号：O302[理学—力学]