筋条分层损伤复材加筋壁板的稳定性分析及修理  

STABILITY ANALYSIS AND REPAIR OF STIFFENED COMPOSITE WALL SLAB WITH A DELAMINATONG AT THE STRINGER INTERFACE

作　　者：赵洁[1] 陆华[1] 王明春[1] 

机构地区：[1]沈阳飞机设计研究所,沈阳110035

出　　处：《机械强度》2016年第4期871-874,共4页Journal of Mechanical Strength

摘　　要：从工程实际问题出发,采用有限元方法,模拟典型结构/典型分层类型,对某型飞机筋条带分层损伤的复合材料加筋壁板稳定性进行计算分析,针对分层原因提出损伤控制和修理的工程可行方案。全尺寸带分层损伤结构静强度试验表明壁板稳定性决定结构整体承载能力,由于筋条分层提高壁板工作应力的同时降低了蒙皮局部支持刚度,导致初始失稳载荷及总体承载能力的下降。试验结果较好的印证了有限元分析方法的正确性。From the perspective of engineering practice,analysis of stiffened composite wall slab with a Delaminatong at the stringer interface in this paper,and typical structure / typical Delaminatong type is simulated using finite element method. In view of reasons of Delaminatong,feasible proposals of damage control and repair have been raised. Full-scale static test of structures with Delaminatong has indicated that the integer load-carrying capability is determined by the stability of the wall slab. Going with the increase of the working stress due to the Delaminatong between the stringer and the skin,local sustain stiffness of the skin is reduced,resulting in descending of initial bucking load and integer capability of load-carrying. Correctness of the finite element analysis method has been preferably verified by the results of test.

关 键 词：飞行器设计 复合材料 有限元 分层损伤 稳定性 修理 

分 类 号：V215.2[航空宇航科学与技术—航空宇航推进理论与工程]