Structural Engineering and Mechanics

  • 제78권5호
  • /
  • Pages.585-597
  • /
  • 2021
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  • 1225-4568(pISSN)
  • /
  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Analyzing the contact problem of a functionally graded layer resting on an elastic half plane with theory of elasticity, finite element method and multilayer perceptron

  • Yaylaci, Murat (Department of Civil Engineering, Recep Tayyip Erdogan University) ;
  • Yayli, Mujgen (Department of Civil Engineering, Recep Tayyip Erdogan University) ;
  • Yaylaci, Ecren Uzun (Surmene Faculty of Marine Science, Karadeniz Technical University) ;
  • Olmez, Hasan (Department of Marine Engineering Operations, Karadeniz Technical University) ;
  • Birinci, Ahmet (Department of Civil Engineering, Karadeniz Technical University)
  • 투고 : 2020.06.02
  • 심사 : 2021.04.12
  • 발행 : 2021.06.10
⟨ 이전 논문 다음 논문 ⟩

초록

This paper presents a comparative study of analytical method, finite element method (FEM) and Multilayer Perceptron (MLP) for analysis of a contact problem. The problem consists of a functionally graded (FG) layer resting on a half plane and pressed with distributed load from the top. Firstly, analytical solution of the problem is obtained by using theory of elasticity and integral transform techniques. The problem is reduced a system of integral equation in which the contact pressure are unknown functions. The numerical solution of the integral equation was carried out with Gauss-Jacobi integration formulation. Secondly, finite element model of the problem is constituted using ANSYS software and the two-dimensional analysis of the problem is carried out. The results show that contact areas and the contact stresses obtained from FEM provide boundary conditions of the problem as well as analytical results. Thirdly, the contact problem has been extended based on the MLP. The MLP with three-layer was used to calculate the contact distances. Material properties and loading states were created by giving examples of different values were used at the training and test stages of MLP. Program code was rewritten in C++. As a result, average deviation values such as 0.375 and 1.465 was obtained for FEM and MLP respectively. The contact areas and contact stresses obtained from FEM and MLP are very close to results obtained from analytical method. Finally, this study provides evidence that there is a good agreement between three methods and the stiffness parameters has an important effect on the contact stresses and contact areas.

키워드

참고문헌

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