FEM stress analysis and strength of adhesive butt joints of similar hollow cylinders under static and impact tensile loadings

被引:23
|
作者
Sawa, T
Suzuki, Y
Kido, S
机构
[1] Yamanashi Univ, Dept Mech Engn, Yamanashi 4000016, Japan
[2] Siemens Automot KK, Dept Engn, Shizuoka 4120004, Japan
关键词
stress response; impact tensile load; hollow cylinders; butt adhesive joint; FEM; maximum principal stress; interface; strength; static tensile load;
D O I
10.1163/156856102320252895
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
The stress wave propagations in butt adhesive joints of similar hollow cylinders subjected to static and impact tensile loadings are analyzed in elastic and elasto-plastic deformation ranges using the finite-element method (FEM). The impact loading is applied to the joint by dropping a weight. The upper end of the upper adherend is fixed and the lower adherend of which the lower end is connected to a guide bar is subjected to the impact loading. The FEM code employed is DYNA3D. The effects of the adhesive thickness and Young's modulus of the adhesive on the stress wave propagation at the interfaces are examined. In addition, the characteristics of the joints subjected to impact loadings are compared with those of the joints under static loadings and the joint strengths are estimated by using the interface stress distributions. It is found that the maximum value of the maximum principal stress, sigma(1) occurs at the outside edge of the interface of the lower adherend to which the impact loading is applied. The maximum value of the maximum principal stress, sigma(1) increases as Young's modulus of the adhesive increases when the joints are subjected to impact loadings. It is found that the characteristics of the joints subjected to impact loadings are opposite to those subjected to static loadings. In addition, experiments were carried out to measure the strain response of the butt adhesive joints subjected to impact and static tensile loadings using strain gauges and the joint strengths were also measured. Fairy good agreements are observed between the numerical and the measured results.
引用
收藏
页码:1449 / 1468
页数:20
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