A two-dimensional finite element thermal stress analysis of adhesive butt j oints containing some hole defects

Nakagawa, Fumito; Sawa, Toshiyuki; Nakano, Yoshiaki; Katsuo, Masahide

doi:10.1163/156856199x00659

Cited by 24 publications

(7 citation statements)

References 11 publications

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“…Considerable amount of research [1] has been carried out on the interface stress distribution s in and strengths of butt [2,3], scarf [4 -6] and lap [7 -12] adhesive joints subjected to various types of loadings such as static, alternative and thermal loadings [13]. However, only a few investigation s have been carried out on stress wave propagation and the stress distribution s in adhesive joints subjected to impact loadings [14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

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

Sawa¹,

Suzuki²,

Kido³

2002

Journal of Adhesion Science and Technology

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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 nite-element method (FEM). The impact loading is applied to the joint by dropping a weight. The upper end of the upper adherend is xed 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, ¾ 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, ¾ 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.

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Section: Introductionmentioning

confidence: 99%

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

Sawa¹,

Suzuki²,

Kido³

2002

Journal of Adhesion Science and Technology

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“…The thermal expansion stresses can be of great importance not only when the adhesive joint is in service but also during the cooling phase from curing temperature. A large number of studies on the influence of thermal stresses in various types of adhesive joints are available [18][19][20][21][22][23][24]. Lee and Lee [18] introduced a model for tubular lap joints incorporating the magnitude of the residual thermal stresses induced by the fabrication process.…”

Section: Differential Thermal Expansionmentioning

confidence: 99%

“…A parametric study on the location of these fillers and holes demonstrated that the thermal stresses could be controlled. Nagakawa [24] further numerically investigated this type of joint with hole-type defects, finding that the stresses around the hole were larger near the center of the adhesive than at those located in the free surface of the adhesive.…”

Section: Differential Thermal Expansionmentioning

confidence: 99%

Adhesive Joints for Low- and High-Temperature Use: An Overview

Marques

Silva

Banea

et al. 2014

The Journal of Adhesion

159

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This work presents a review of several investigations on the topic of adhesive bonding at high and low temperatures. Durability and strength at extreme temperatures have always been a major limitation of adhesives that, given their polymeric nature, exhibit substantial degradation at temperatures where other structural materials (such as metals for example) have minute changes in mechanical properties. However, due to the inherent advantages of bonding, there is a large and continued effort aiming to improve the temperature resistance of adhesive joints, and this effort has been spread among the various topics that are discussed in this review. These topics include adhesive shrinkage and thermal expansion, adhesive properties, joint geometry optimization, and design techniques, among others. The findings of these research efforts have all found use in practical applications, helping to solve complex problems in a variety of high-tech industries where there is a constant need to produce light and strong components that can withstand large temperature gradients. Therefore, the final sections of this work include a discussion on two specific application areas that demonstrate the strict demands that extreme temperature use imposes on adhesive joints and the methods used to improve their performance.

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“…Considerable amount of research [1] has been carried out on the interface stress distributions and strengths of butt [2,3], scarf [4 -6] and lap [7 -12] adhesive joints subjected to static loadings as well as repeated and thermal loadings [13]. In practice, adhesive joints are subjected to impact as well as static loadings.…”

Section: Introductionmentioning

confidence: 99%

Stress analysis and strength estimation of butt adhesive joints of dissimilar hollow cylinders under impact tensile loadings

Sawa¹,

Suzuki²,

Kido³

2003

Journal of Adhesion Science and Technology

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The stress variations in butt adhesive joints of dissimilar hollow cylinders subjected to impact tensile loadings are analyzed in elastic and elasto-plastic deformation ranges using a nite element method (FEM). The FEM code name employed is DYNA3D. The effects of Young's modulus ratio between dissimilar adherends and the adhesive thickness on the stress variations at the interfaces are examined. In addition, the process of rupture at the interfaces of the joint is simulated. The stress distributions in the joints under static loadings are also analyzed by FEM. The characteristics of the stress variations in the joints under impact loadings are compared with those in the joints under static loadings. Also, the joint strengths under impact loadings are estimated by elasto-plastic FEM. It is found that the maximum value of the maximum principal stress ¾ 1 occurs at the outside edge of the lower interface. It is also found that the maximum principal stress ¾ 1 at the lower interface decreases as the adhesive thickness increases. The characteristicsof the joints under impact loadings are found to be opposite to those under static loadings. Furthermore, differences in the characteristics of the stress variations are shown between the dissimilar joints and the similar joints. In addition, the experiments were carried out to measure the strain response and strains in the butt adhesive joints under both impact and static loadings using strain gauges. Furthermore, joint strengths under both impact and static loadings were measured. Fairly good agreements are observed between the numerical and the measured results.

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A two-dimensional finite element thermal stress analysis of adhesive butt j oints containing some hole defects

Cited by 24 publications

References 11 publications

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

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

Adhesive Joints for Low- and High-Temperature Use: An Overview

Stress analysis and strength estimation of butt adhesive joints of dissimilar hollow cylinders under impact tensile loadings

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