李伟东

个人信息Personal Information

副教授

硕士生导师

任职 : 大连理工大学人工智能大连研究院 副院长

性别:男

毕业院校:大连理工大学

学位:博士

所在单位:机械工程学院

学科:车辆工程

电子邮箱:liweidong@dlut.edu.cn

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Strength Degradation of Adhesively Bonded Single-Lap Joints in a Cyclic-Temperature Environment Using a Cohesive Zone Model

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发表时间:2022-10-08

发表刊物:JOURNAL OF ADHESION

所属单位:运载工程与力学学部

卷号:91

期号:8

页面范围:587-603

ISSN号:0021-8464

摘要:Adhesively bonded joints are widely used in automotive industry. Adhesively bonded joints permit to have more uniform stress distributions, join complex shapes, and reduce the weight of the structures. The requirement to reduce the weight of automobiles is also increasing the application of composites. In this article, CFRP (carbon fiber-reinforced plastics) composite was used in experimental tests. In many cases, adverse environments cause non-negligible degradation in joints mechanical performance. So a combined experimental-numerical approach was developed to characterize the effect of cyclic-temperature environment on adhesively bonded joints. Experimental tests were carried out on single-lap joints with CFRP and steel adherend in a cyclic-temperature environment. A cohesive zone model was taken into consideration to predict the results observed during the experimental tests and an environmental degradation model was developed. Scanning electron microscopy was utilized to investigate the fracture surfaces.

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