Journal of the Society of Disaster Information (한국재난정보학회 논문집)

The Korean Society of Disaster Information (한국재난정보학회)
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Viscoelastic Stress Analysis of Adhesive-bonded Cylindrical by FEM

유한요소법을 이용한 원통체의 점탄성 응력 해석

  • Park, Sung-Jin (Department of Urban Engineering, Incheon National University)
  • Received : 2019.04.14
  • Accepted : 2019.06.03
  • Published : 2019.06.28
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Abstract

Purpose: In this paper adhesive-bonded cylindrical lap joints are analyzed by assuming that the adherends are elastic and the adhesive is linearly viscoelastic. Method: The distribution of the stresses in the adhensive is evaluated using the Finite Element Method. Nuverical examples for identical and different adherends bonded through a four parameter viscoelastic solid adhesive are illustrated. Results: The stress distribution in the adhesive layer with respect to time is shown. The stress distribution in the adhesive layer with respect to time is shown. The results are also shown that adherend thickness and elastic modulus give effect on the normalized stress. Conclusion: In this study, the stress distribution of the adhesive layer of the wrapped cylindrical body considering the viscoelasticity of the adhesive layer was numerically analyzed by using a four - element elastomer model.

연구목적: 본 논문에서 접착제로 접착된 원통형 랩 접합부는 피착체가 탄성이고, 접착제가 선형 점탄성이라고 가정한다. 연구방법: 피착제의 응력 분포는 유한요소법을 사용하며, 4개의 아이소파라메터 점탄성 고체 접착제를 통해 피착제에 대한 해석결과를 검증한다. 연구결과: 접착층에서의 시간에 대한 응력분포와 피착제의 두께와 탄성율이 규격화에 미치는 응력의 영향을 검토한다. 결론: 본 연구는 접착제층의 점탄성을 고려한 랩접착된 원통체의 접착제층의 응력분포에 대해서 4요소 탄성체 모델을 사용하여 수치해석을 하였다.

Keywords

JNJBBH_2019_v15n2_259_f0001.png 이미지

Fig. 1. Wrapped cylinder

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Fig. 2. Adhesive element

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Fig. 3. Analytical Model and Element Segmentation

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Fig. 5. Characteristics of adhesive layer stress distribution [A1-A1, R=0.01]

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Fig. 4. Four-element viscoelastic model

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Fig. 6. Characteristics of adhesive layer stress distribution [A1-A1, R=0.1]

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Fig. 7. Changes in maximum shear stress and normal stress (AI-AI)

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Fig. 8. Characteristics of adhesive layer stress distribution [Fe-Fe, R=0.01]

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Fig. 9. Characteristics of adhesive layer stress distribution [Fe-Fe, R=0.1]

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Fig. 10. Changes in maximum shear stress and normal stress (Fe-Fe)

JNJBBH_2019_v15n2_259_f0011.png 이미지

Fig. 11. Characteristics of adhesive layer stress distribution [AI-Fe, R=0.01]

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Fig. 12. Characteristics of adhesive layer stress distribution [AI-Fe, R=0.1]

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Fig. 13. Changes in maximum shear stress and normal stress (AI-Fe)

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