Stress analysis and strength evaluation of bonded shrink fitted joints subjected to torsional loads

Sawa, Toshiyuki; Yoneno, Masahiro; Motegi, Youichi

doi:10.1163/156856101743292

Cited by 14 publications

(6 citation statements)

References 10 publications

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“…2a 2 : inner diameter of finite hollow cylinderⅡ 2b i : outer diameter of finite solid cylinderⅠand finite hollow cylinderⅡ (i=1,2) 2h i : height of finite solid cylinderⅠand finite hollow cylinderⅡ (i=1,2) O i : origin of the coordinate for finite solid cylinderⅠand finite hollow cylinderⅡ (i=1,2) E i : Young's modulus of finite solid cylinderⅠand finite hollow cylinderⅡ(i=1,2) G i : shear modulus of finite solid cylinderⅠand finite hollow cylinderⅡ(i=1,2) ν i : Poisson's ratio of finite solid cylinderⅠand finite hollow cylinderⅡ(i=1,2) T w : torque applied to the upper end of finite solid cylinderⅠ ν θ : displacement in the circumferential direction J n (α s r) : the first kind of Bessel function in order n. …”

Section: Nomenclaturementioning

confidence: 99%

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Axisymmetrical Stress and Strength Analysis of Epoxy-Steel Composite Cylinders under Torsional Loads

Liao

Sawa

Hasegawa

2010

JMMP

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Epoxy-Steel composites have been used widely for lightening and strengthening mechanical structures. This paper deals with the stress analysis and strength estimation of epoxy-steel composite joint in which a hollow cylinder (epoxy) is fitted at the outside surface of a solid cylinder (steel) subjected to torsional loads. The interface stress distributions in the epoxy-steel composite cylinders under external torsion are analyzed using an axisymmetrical theory of elasticity as a two-body contact problem. In the numerical calculations, the effects of Young's modulus and the diameter of the solid cylinder on the interface stress distributions are examined. It is found that the shear stress increases as Young's modulus and the diameter of the solid cylinder decrease. A valid method for estimating the singularity is proposed. Using the interface stress distributions and analogous tests, the joint strength is predicted. In addition, the values of the joint strength were obtained experimentally. It is seen that a rupture initiates from the upper edge of the interface area when the torsion is applied to the upper end of the solid cylinder. For verification of the present analysis, FEM calculations are carried out. The numerical results are in fairly good agreements with the experimental results and the FEM results.

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Section: Nomenclaturementioning

confidence: 99%

“…However, they have not yet been researched in detail. Some papers have carried out on the composite joints [1][2][3][4][5][6][7][8][9]. However, few researchers have been performed on the stress distribution and the strength of composite cylinders which consist of low strength materials and high strength materials [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Axisymmetrical Stress and Strength Analysis of Epoxy-Steel Composite Cylinders under Torsional Loads

Liao

Sawa

Hasegawa

2010

JMMP

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“…The interface stress characteristics of epoxy-steel composite parts, such as singular stresses, are important factors in designing composite parts. Some researches have been carried out on the stress characteristics in composite joints [1][2][3][4][5][6][7][8][9]. Besides, some studies [10][11][12][13][14][15][16][17] have been carried out on the contact stress distributions in mechanical structures.…”

Section: Introductionmentioning

confidence: 99%

“…Besides, some studies [10][11][12][13][14][15][16][17] have been carried out on the contact stress distributions in mechanical structures. However, only a very few researches have been performed on the stress distribution and the strength of composite cylinders which consist of low strength materials and high strength materials [1][2][3][4][5]. In other words, researches on the interface stress distributions and the strength estimations in composite cylinders have not yet been carried out in detail.…”

Section: Introductionmentioning

confidence: 99%

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Axisymmetrical Stress and Strength Analyses of Epoxy-Steel Composite Cylinders under Push-off Loads

Liao

Sawa

Hasegawa

2010

JMMP

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The interface stress distributions in composite cylinders of steel (solid cylinder) and epoxy (hollow cylinder) under push-off loads are analyzed using axisymmetrical theory of elasticity as a three-body contact problem. In the numerical calculations, the effects of Young's modulus and the diameter of solid cylinder on the interface stress distribution are examined. In addition, the effects of the diameter of supported hollow cylinder and the stress distribution due to the applied push-off loads are also examined. It is found that the normal stress at the interfaces increases as Young's modulus of solid cylinder decreases, the diameter of solid cylinder and the diameter of supported hollow cylinder increase. It is also found that the shear stress at the interfaces increases as the diameter of supported hollow cylinder increases, Young's modulus and the diameter of solid cylinder decrease. Singular stresses occur at the edges of the interfaces. A valid method for estimating the singularity is proposed and the discussion is made. Using the interfaces stresses obtained from the numerical analysis and analogous tests, the push-off strength of composite cylinders is estimated. The experiments to measure composite cylinders strength are carried out. It is seen that a rupture initiates at the lower edge of the interface area when the push-off loads are applied to the upper end of solid cylinder. For verification of the present analysis of the interface stress distributions, finite-element method (FEM) is also carried out. The numerical results of the interface stress distributions and the strength are in fairly good agreement with the experimental results and the FEM results. The axisymmetrical theory of elasticity is more rational compared to the shear lag theory in examining the stress singularity and considering the normal stress and shear stress at the interfaces at the same time. Finally, as an example, it is observed that the weight of composite cylinders is lighter by 48.1% than that of the structure with the same of steel material for obtaining the same strength.

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Stress analysis and strength evaluation of bonded shrink fitted joints subjected to torsional loads

Cited by 14 publications

References 10 publications

Axisymmetrical Stress and Strength Analysis of Epoxy-Steel Composite Cylinders under Torsional Loads

Axisymmetrical Stress and Strength Analysis of Epoxy-Steel Composite Cylinders under Torsional Loads

Axisymmetrical Stress and Strength Analyses of Epoxy-Steel Composite Cylinders under Push-off Loads

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