【作者】 顾志芬； 崔德渝；

【Author】 Gu Zhifen Cui Deyu (Beijing University of Aeronautics & Astronautics, Beijing 100083)

【机构】 北京航空航天大学；

【摘要】 本文应用‘三板模型’的力学概念及有限元分析方法,分析含分层损伤的复合材料层板的位移场及应力场,并选用Hoffman破坏准则及损伤参数研究含分层损伤的复合材料层板的破坏特性。文中分析了含分层损伤复合材料层板在横向载荷作用下铺设角对弯曲刚度的影响,以及层板所含分层损伤区布局、大小对位移场的影响。计算含分层损伤层板出现破坏层后载荷与挠度的关系,数值计算与实验结果进行对比表明了结果的—致性。更多还原

【Abstract】 This paper presents the analysis of stress and displacement fields of the delaminated composite plates by means of ’three - plate model’ and finite element approach. According to Hoffman failure criterion, a damage tensor is introduced to analyze the constitutive behaviors of delaminaed plates. The effect of the ply angle of delaminated composite laminate to the stiffness in bending is investigated. The influence of delaminated area to the displacement field is also analyzed. The displacement field is investigated while the failure of layers takes place. Comparing the numerical results of the deflection of delaminated plates with experimental date, a good agreement is achieved.更多还原