中文摘要：

为了调查不同几何参数和 pretightening 的效果，在失败模式和适用的力量上装载，很多跑单人赛的 T300/QY8911 合成把压成薄片在静态的紧张负担下面被测试。盒子阴谋被用来提取忍受力量的单个测试价值，有效统计价值被获得。独立样品的 T 测试方法被用来学习负担多少 pretightening 影响适用的力量。结果证明几何参数例如到洞直径(w/d ) 和到洞直径(e/d ) 的边距离的宽度的比率，显著地影响失败模式和适用的力量。当 w/d 比 4 小时，网节失败将发生，并且当 e/d 比 2 小时，砍外面失败将发生。忍受失败或适用并且砍外面联合了当 w/d 比 4 大， e/d 比 2 大时，失败将发生。有几何参数的最佳的联合完成最高的适用力量。为大多数标本， pretightening 负担明确地不影响适用的力量。

英文摘要：

In order to investigate the effects of different geometrical parameters and pretightening loads on failure mode and bearing strength,a large number of single-bolted T300/QY8911 composite laminates were tested under static tension load.Box-plot was used to extract the singular testing values of bearing strength and effective statistical values were obtained.T-test method of independent samples was used to study how much pretightening loads influence bearing strength.The results show that the geometrical parameters,such as ratios of width to hole diameter（w/d） and edge distance to hole diameter（e/d）,remarkably influence failure mode and bearing strength.Net-section failure will occur when w/d is smaller than 4,and shear-out failure will occur when e/d is smaller than 2.Bearing failure or bearing and shear-out combined failure will occur when w/d is greater than 4 and e/d is greater than 2.There is an optimal combination of geometrical parameters to achieve the highest bearing strength.For most of specimens,pretightening loads do not explicitly influence bearing strength.