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Numerical and experimental investigation of a complete contact problem by comparing with an asymptotic analysis.pdf

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Numerical and experimental investigation of a complete contact problem by comparing with an asymptotic analysis.pdf

International Journal of Solids and Structures 82 (2016) 39–46 Contents lists available at ScienceDirect International Journal of Solids and Structures journal homepage: /locate/ijsolstr Numerical and experimental investigation of a complete contact problem by comparing with an asymptotic analysis Jae-Won Jang a,1, Hyung-Kyu Kim b, Soon-Bok Lee c,? a Mechanical Engineering Research Institute, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea b Light Water Reactor Fuel Technology Division, Korea Atomic Energy Research Institute, Daedeok-daero 989-111, Yuseong-gu, Daejeon 34057, Republic of Korea c Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea article info Article history: Received 22 April 2015 Revised 31 October 2015 Available online 29 December 2015 Keywords: Complete contact Adhesive contact Asymptotic analysis Moiré experiment Finite element analysis abstract The stress and displacement ?elds of a complete contact problem are investigated using a ?nite element analysis (FEA) and a Moiré experiment, respectively. Asymptotic analysis of an adhered contact condition is preceded for comparison. Aluminum and copper alloys are used as the contact materials, from which specimens of different contact angles are fabricated. The FEA scheme is validated through comparison with the displacement distributions that are measured in the Moiré experiment. In turn, the generalized stress intensity factors are calculated using the validated FE models. These factors are used to evaluate the dimensional stress distributions in the asymptotic analysis, which are then compared with the FEA results. Excellent agreement in stress components is found between the asymptotic and FE methodolo- gies. The relative error of the stress components σ rr and σ θθ between the methodologies was less than 3.8% within the range from the co