摘要
对Z-p ins增强2-D编织陶瓷基复合材料搭接接头在单向载荷作用下的连接性能进行了试验研究。试验结果表明Z-p ins的加入能够改善2-D编织陶瓷基复合材料搭接接头的连接性能,反映在载荷-位移曲线的后半段,载荷变化出现了波动不大的起伏区域。产生此区域的原因为Z-p ins从搭接接头拔出的过程中,与复合材料形成桥联,消耗了部分本该作用在开裂尖端的能量。利用有限元的方法模拟了有、无Z-p ins,Z-p ins在不同直径和间距下搭接接头的失效过程,并与试验结果相比较,吻合较好。
In this paper the single-lap joint reinforced by Z-pins is studied on its carrying capacity through experiments. The results indicate that Z-pins can restrain cracking and improve carrying capacity, because the varied load has a stabilization area. Area is shaped by the interaction between Z-pins and joint, during Z-pins draw from the joint. The paper stimulates the connecting performance of the single-lap joint reinforced by Z-pins, including no-pins, different diameters and spacing＇ Z-pins, modeling results are agreed with experimental results. The numerical results indicate enlarging diameter and decreasing spacing of Z-pins are in favor of improving the connecting performance of the joints.
出处
《航空材料学报》
EI
CAS
CSCD
2008年第6期96-101,共6页
Journal of Aeronautical Materials
基金
自然科学基金(90405015)
高等学校博士学科点专项科研基金(20030699040)
