层压板修理设计中的参数选择问题  

SELECTION OF THE DESIGN PARAMETERS IN LAMINATE REPAIR

作　　者：孟凡颢[1] 陈绍杰[1] 童小燕[2] 

机构地区：[1]沈阳飞机设计研究所2部,沈阳110035 [2]西北工业大学飞机结构完整性研究所,西安710072

出　　处：《复合材料学报》2001年第4期123-127,共5页Acta Materiae Compositae Sinica

摘　　要：复合材料层压板的修理问题是复合材料结构修理中的基础性研究课题。其中 ,贴补法和挖补法是两种基本的修理方法。通过有限元方法对贴补法和挖补法进行了研究 ,给出了贴补修理和挖补修理的最佳设计参数选择方案。对于大多数贴补修理设计 ,补片的厚度应该是母板厚度的一半 ,搭接长度大约在 2 5 m m ;对于挖补修理 ,通常可采用 6°的挖补角度。试验结果表明 。Laminate repair is a basic research topic of composite repair. Thereinto, patch bonded repair and flush repair are the two most important methods. In this work, FEM analysis was researched on the above two methods, and the scheme of parameter selection was provided. The research shows that, for most patch bonded cases, patch thickness should be half of the original laminate, and the overlap length should be about 25 mm. And for most flush repairs, the scarf angle can be 6°. Typical specimens were tested to verify the optimized design parameters. To eliminate the influence of the additional bending and to simulate the actual structure more exactly, the patch bonded specimens should be designed as two sided repair. The results of the tests fitted in well with the parameters derived from the theoretical analysis. And the scheme of parameter selection has great significance in directing the engineering practice of composite repair.

关 键 词：复合材料 修理 贴补 挖补 设计参数 层压板 

分 类 号：TB33[一般工业技术—材料科学与工程]