摘要
针对双材料界面强度不足与界面应力分布不均的问题,对双材料界面强度、界面应力分布不均、载荷位移曲线(LD)波动等方面进行了试验研究与理论分析,利用铝/聚乙烯(PE)、铝/聚丙烯(PP)、铝/聚甲醛(POM)双材料的实验结果,对材料的TS813粘结试样界面强度与Ergo5800粘结试样进行了比较分析,对弹性模量与PE、PP、POM材料的界面强度进行了对比,分析了载荷位移曲线与界面断口。研究结果表明:铝/非金属双材料界面抗拉强度随着弹性模量增大而减小,TS813试样界面强度为Ergo5800试样的4.44、2.17、2.89倍,铝/橡胶前者为后者76.47%;界面强度分布不均导致界面剥落情况不同与LD曲线中波动现象,同种材料试样与同种粘结剂试样,试样界面强度越低载荷波动越明显。
Aiming at the problems of insufficient tensile strength and uneven distribution of stress, the bi-material was experimental studied and theoretical analyzed in the areas of stress strength, stress distribution, load displacement curves, etc. Utilizing the result of the bi-mate-rial of Al/PE, Al/PE, Al/PE, the TS813 bonding samples and the Ergo5800 ones were compared. Then, comparing the elastic modulus and the interface strength of PE, PP, POM, the load displacement curves and fractography were analyzed. The results indicate that the interface strength of bi-material are decreasing with the increase of elastic modulus, the interface strength of the TS813 bonding samples is the Er-go5800 ones 4. 44, 2. 17, 2. 89 times, while the former of the Al/rubber is the latter＇s 76. 47%. The desquamating at different positions of the interface and the phenomenon of fluctuations in the LD curve are led by the uneven interface strength result from the fractography and LD curve, and the interface strength of the sample is lower, the fluctuation is more obvious between the same-material samples and same bonder-samples.
出处
《机电工程》
CAS
2017年第6期567-572,共6页
Journal of Mechanical & Electrical Engineering
基金
浙江省公益性技术应用研究计划项目(2014C33030)
浙江省科协青年科技人才培育工程资助项目(2016YCGC008)
关键词
双材料
断口
界面强度
载荷位移曲线
bi-material
fractography
interface strength
load displacement curve
作者简介
张锐之（1991-），男，重庆垫江人，硕士研究生，主要从事双材料界面强度方面的研究．E-mail：showcddzrz2@163．com
通信联系人：丁浩，男，讲师．E-mail：dinghao@zjut．edu．cn
