VISCOELASTIC AND VISCOPLASTIC STRESS-ANALYSIS OF ADHESIVE JOINTS

被引：24

作者：

GROTH, HL

机构：

[1] Department of Aeronautical Structures, Materials The Royal Institute of Technology

来源：

INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES | 1990年 / 10卷 / 03期

关键词：

adhesive-bonded joints; defects; finite element analysis; flaw; numerical models; shear-lag analysis; stress analysis; viscoelasticity; viscoplasticity;

D O I：

10.1016/0143-7496(90)90105-7

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The viscoelastic and viscoplatic effects in an adhesively bonded joint are very important to understand. Most of the adhesives used in structural applications exhibit some viscoelastic-viscoplastic behaviour, especially at high temperatures and high stress levels. The redistribution of stresses and strains that occur in joints during the viscoelastic-viscoplastic deformation influences the strength of the joints considerably. At low load levels a linear viscoelastic material model may be applicable, and at higher load levels both linear viscoelastic and non-linear viscoplastic material models are active at the same time. This paper presents results from the stress analysis of single lap joints, both with and without a crack, and with viscoelastic and viscoplastic adhesives. The influence of the stress redistribution on the failure load of the joint is discussed, as well as a 'rule of thumb' which can account for the viscous effects in the engineering design. The influence of flaws in the joints is also discussed. © 1990.

引用

页码：207 / 213

页数：7

共 15 条

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