摘要
为深入分析胶-螺混合连接结构强度及影响因素,利用ABAQUS平台建立胶-螺混合连接三维渐进损伤模型,采用界面层损伤判据及退化方法来模拟胶层的损伤破坏。首先,将胶-螺混合连接结构强度分别与胶接结构、螺接结构强度进行对比,详细阐释胶-螺混合连接结构与胶接结构承载机理及胶接区应力分布形式;然后,分析讨论钉头形式及宽径比对混合连接结构强度和损伤形式的影响。结果表明:胶-螺混合连接结构强度优于胶接结构和螺接结构,并得到了可有效提高结构强度的钉头形式及最佳宽径比。
In order to analyze the structural strength of bonded-bolted hybrid composite joints and the influence factors comprehensively, a three dimensional progressive damage model of bonded-bolted joints is established with ABAQUS and by employing cohesive zone method to simulate the behavior of adhesive. Firstly, the struc- tural strength of bonded-bolted hybrid joints, bonded joints and bolted joints are compared respectively and a de- tailed explanation is made to the load carrying mechanism and stress distribution in bonding area of bonded-bol- ted hybrid joints and bonded joints~ then, the influences of bolt head type and width to diameter ratio to the structural strength and damage type to bonded-bolted hybrid structure are discussed. The result shows that bonded-bolted hybrid joint is the best among the three in terms of structural strength, and putting forward the best bolt head type and width to diameter ratio to improve the structural strength.
出处
《航空工程进展》
2013年第2期186-192,共7页
Advances in Aeronautical Science and Engineering
关键词
复合材料
混合连接
单搭接
埋头钉
损伤
composite
hybrid joints
single-lap joints
countersunk head
damage
