复合材料层合结构层间应力分析  

Interlaminar stress analysis of composite laminated structure

作　　者：彭惠芬[1] 夏晔[1] 王鹏[2] 王程[2] 

机构地区：[1]东北石油大学机械科学与工程学院,黑龙江大庆163318 [2]大庆油田有限责任公司钻探工程公司,黑龙江大庆163453

出　　处：《河北工业科技》2015年第2期139-142,共4页Hebei Journal of Industrial Science and Technology

基　　金：黑龙江省应用技术研究与开发计划项目(GA13A402)

摘　　要：采用理论分析和数值模拟相结合的方法,研究了不同纤维铺设角下承受分布载荷层合板层间应力分布规律.研究结果表明：复合材料层合板层间剪应力τxx随纤维铺设角θ的增加而逐渐减小,但减小趋势不断减弱;层合板层间剪应力τyx随纤维铺设角度θ的增加而逐渐增加;距层合板中心o点距离为0～1.348m,层间剪应力随距离增大变化缓慢,为1.348—1.418 m,层间剪应力急剧增大,在自由边界角节点处层间应力达到极值,此处易于发生脱层效应.By combining theoretical analysis and numerical simulation methods, interlaminar stress distribution law of lami- nates with different fiber ply angles under distributed loading are studied. The results show that： laminate interlaminar shearing stress τxz decreases when fiber ply angle θ increases, but the trend is diminishing, while laminate interlaminar shearing stress τyz increases gradually when fiber ply angle θ increases. Within the distance of 0-1. 348 m from the center o of laminates, lami- nate interlaminar shearing stress increases gradually when the distance increases. While within the distance of 1. 348- 1. 418 m, interlaminar shearing stress increases sharply. Interlaminar stresses reaches maximum in the free boundary angle joints, where delamination effect occurs easily.

关 键 词：聚合物基复合材料 层间应力 纤维铺设角 层合结构 脱层效应 

分 类 号：TB33[一般工业技术—材料科学与工程]