The Experts below are selected from a list of 309 Experts worldwide ranked by ideXlab platform

Mehmet Celik - One of the best experts on this subject based on the ideXlab platform.

  • Elasto-Plastic Behavior of Thermoplastic Matrix Roller Chain Link Plates Reinforced With Steel Fibers
    Volume 5: 14th Reliability Stress Analysis and Failure Prevention Conference; 7th Flexible Assembly Conference, 2000
    Co-Authors: Nurettin Arslan, Erol Sancaktar, Mehmet Celik
    Abstract:

    Abstract The elastic and elasto-plastic stress analysis of thermoplastic matrix roller chain link plates reinforced with steel fibers is performed by using Finite Elements Analysis (FEA). A two-dimensional finite Element computer program is developed for elasto-plastic stress analysis. Isoparametric Quadratic Element with four nodes is used with Lagrange polynomial as an interpolation function. The results of elastic and elasto-plastic finite Element stress analysis by using the computer program prepared, are compared with experimental, (photoelastic) results. The spreads of the plastic zones due to the external load applied on the pin-hole of the plate and variations of the residual stresses are determined in different orientation angles and loads. It is shown that the geometry of the link plates can be designed to decrease the stress concentrations. Furthermore, it is shown that the tensile load limit of the roller chain link plate is extended by the residual stresses.

  • Application of the different boundary Elements to spur gears
    Computer Methods in Applied Mechanics and Engineering, 1999
    Co-Authors: Mehmet Celik
    Abstract:

    Boundary Element method with constant and isoparametric Quadratic Elements was used to compute the gear teeth deflections and stresses, respectively. The boundary Elements implemented in a computer program compute and accurately predict the problem in relatively little time and are advantageous for searching the gear surface areas of stress concentration for maximum stress positions. The numerical outputs demonstrate that isoparametric Quadratic Element should be preferred to general machine Elements, of which gears are representatives. The results are shown to compare favorably with analogous results obtained by strain gage method.

Luiz Felipe Mendes Moura - One of the best experts on this subject based on the ideXlab platform.

  • galerkin and least squares methods to solve a 3d convection diffusion reaction equation with variable coefficients
    Numerical Heat Transfer Part A-applications, 2012
    Co-Authors: Estaner Claro Romao, Luiz Felipe Mendes Moura
    Abstract:

    This study addresses how to implement the Galerkin finite Element and least square finite Element methods using auxiliary equations to solve the partial differential equation numerically, which models the convection–diffusion–reaction, set on a steady 3D domain. In the spatial discretization, hexahedral Elements with eight (linear Element) and 27 (Quadratic Element) nodes were used, in which Lagrange interpolation functions were adopted in local coordinates. Turning all the formulation of the problem of global coordinates into local coordinates, the Gauss–Legendre quadrature method was used to integrate coefficients of the Element matrices numerically. In addition to the formulation by the two methods, a computer code was implemented to simulate the phenomenon proposed. By using analytical solutions, sundry numerical error analysis was performed from L2 norm (domain–average error) and L∞ norm (domain–top error), thus validating the numerical results. A real case is proposed and assessed.

  • Galerkin and Least Squares Methods to Solve a 3D Convection–Diffusion–Reaction Equation with Variable Coefficients
    Numerical Heat Transfer Part A: Applications, 2012
    Co-Authors: Estaner Claro Romao, Luiz Felipe Mendes Moura
    Abstract:

    This study addresses how to implement the Galerkin finite Element and least square finite Element methods using auxiliary equations to solve the partial differential equation numerically, which models the convection–diffusion–reaction, set on a steady 3D domain. In the spatial discretization, hexahedral Elements with eight (linear Element) and 27 (Quadratic Element) nodes were used, in which Lagrange interpolation functions were adopted in local coordinates. Turning all the formulation of the problem of global coordinates into local coordinates, the Gauss–Legendre quadrature method was used to integrate coefficients of the Element matrices numerically. In addition to the formulation by the two methods, a computer code was implemented to simulate the phenomenon proposed. By using analytical solutions, sundry numerical error analysis was performed from L2 norm (domain–average error) and L∞ norm (domain–top error), thus validating the numerical results. A real case is proposed and assessed.

Erol Sancaktar - One of the best experts on this subject based on the ideXlab platform.

  • Elasto-Plastic Behavior of Thermoplastic Matrix Roller Chain Link Plates Reinforced With Steel Fibers
    Volume 5: 14th Reliability Stress Analysis and Failure Prevention Conference; 7th Flexible Assembly Conference, 2000
    Co-Authors: Nurettin Arslan, Erol Sancaktar, Mehmet Celik
    Abstract:

    Abstract The elastic and elasto-plastic stress analysis of thermoplastic matrix roller chain link plates reinforced with steel fibers is performed by using Finite Elements Analysis (FEA). A two-dimensional finite Element computer program is developed for elasto-plastic stress analysis. Isoparametric Quadratic Element with four nodes is used with Lagrange polynomial as an interpolation function. The results of elastic and elasto-plastic finite Element stress analysis by using the computer program prepared, are compared with experimental, (photoelastic) results. The spreads of the plastic zones due to the external load applied on the pin-hole of the plate and variations of the residual stresses are determined in different orientation angles and loads. It is shown that the geometry of the link plates can be designed to decrease the stress concentrations. Furthermore, it is shown that the tensile load limit of the roller chain link plate is extended by the residual stresses.

  • Elastoplastic Behavior of Thermoplastic Matrix Roller Chain Link Plates Reinforced with Steel Fibers
    Volume 5: 14th Reliability Stress Analysis and Failure Prevention Conference; 7th Flexible Assembly Conference, 2000
    Co-Authors: Erol Sancaktar
    Abstract:

    Abstract The elastic and elasto-plastic stress analysis of thermoplastic matrix roller chain link plates reinforced with steel fibers is performed by using Finite Elements Analysis (FEA). A two-dimensional finite Element computer program is developed for elasto-plastic stress analysis. Isoparametric Quadratic Element with four nodes is used with Lagrange polynomial as an interpolation function. The results of elastic and elasto-plastic finite Element stress analysis by using the computer program prepared, are compared with experimental, (photoelastic) results. The spreads of the plastic zones due to the external load applied on the pin-hole of the plate and variations of the residual stresses are determined in different orientation angles and loads. It is shown that the geometry of the link plates can be designed to decrease the stress concentrations. Furthermore, it is shown that the tensile load limit of the roller chain link plate is extended by the residual stresses.

Estaner Claro Romao - One of the best experts on this subject based on the ideXlab platform.

  • galerkin and least squares methods to solve a 3d convection diffusion reaction equation with variable coefficients
    Numerical Heat Transfer Part A-applications, 2012
    Co-Authors: Estaner Claro Romao, Luiz Felipe Mendes Moura
    Abstract:

    This study addresses how to implement the Galerkin finite Element and least square finite Element methods using auxiliary equations to solve the partial differential equation numerically, which models the convection–diffusion–reaction, set on a steady 3D domain. In the spatial discretization, hexahedral Elements with eight (linear Element) and 27 (Quadratic Element) nodes were used, in which Lagrange interpolation functions were adopted in local coordinates. Turning all the formulation of the problem of global coordinates into local coordinates, the Gauss–Legendre quadrature method was used to integrate coefficients of the Element matrices numerically. In addition to the formulation by the two methods, a computer code was implemented to simulate the phenomenon proposed. By using analytical solutions, sundry numerical error analysis was performed from L2 norm (domain–average error) and L∞ norm (domain–top error), thus validating the numerical results. A real case is proposed and assessed.

  • Galerkin and Least Squares Methods to Solve a 3D Convection–Diffusion–Reaction Equation with Variable Coefficients
    Numerical Heat Transfer Part A: Applications, 2012
    Co-Authors: Estaner Claro Romao, Luiz Felipe Mendes Moura
    Abstract:

    This study addresses how to implement the Galerkin finite Element and least square finite Element methods using auxiliary equations to solve the partial differential equation numerically, which models the convection–diffusion–reaction, set on a steady 3D domain. In the spatial discretization, hexahedral Elements with eight (linear Element) and 27 (Quadratic Element) nodes were used, in which Lagrange interpolation functions were adopted in local coordinates. Turning all the formulation of the problem of global coordinates into local coordinates, the Gauss–Legendre quadrature method was used to integrate coefficients of the Element matrices numerically. In addition to the formulation by the two methods, a computer code was implemented to simulate the phenomenon proposed. By using analytical solutions, sundry numerical error analysis was performed from L2 norm (domain–average error) and L∞ norm (domain–top error), thus validating the numerical results. A real case is proposed and assessed.

Nurettin Arslan - One of the best experts on this subject based on the ideXlab platform.

  • Elasto-Plastic Behavior of Thermoplastic Matrix Roller Chain Link Plates Reinforced With Steel Fibers
    Volume 5: 14th Reliability Stress Analysis and Failure Prevention Conference; 7th Flexible Assembly Conference, 2000
    Co-Authors: Nurettin Arslan, Erol Sancaktar, Mehmet Celik
    Abstract:

    Abstract The elastic and elasto-plastic stress analysis of thermoplastic matrix roller chain link plates reinforced with steel fibers is performed by using Finite Elements Analysis (FEA). A two-dimensional finite Element computer program is developed for elasto-plastic stress analysis. Isoparametric Quadratic Element with four nodes is used with Lagrange polynomial as an interpolation function. The results of elastic and elasto-plastic finite Element stress analysis by using the computer program prepared, are compared with experimental, (photoelastic) results. The spreads of the plastic zones due to the external load applied on the pin-hole of the plate and variations of the residual stresses are determined in different orientation angles and loads. It is shown that the geometry of the link plates can be designed to decrease the stress concentrations. Furthermore, it is shown that the tensile load limit of the roller chain link plate is extended by the residual stresses.

  • Elasto-Plastic Behavior of Thermoplastic Matrix Plates with Rectangular Hole
    Journal of Reinforced Plastics and Composites, 2000
    Co-Authors: Nurettin Arslan
    Abstract:

    The elasto-plastic stress analysis of the thermoplastic matrix plates with rectangular hole is carried out by using finite Elements. A two-dimensional finite Element computer program is developed for elasto-plastic stress analysis. Isoparametric Quadratic Element with nine nodes is used with Lagrange polynomial as an interpolation function. The spreads of the plastic zones and variations of the residual stresses are obtained in different orientation angles and loads. It is shown that the path around the hole location can be designed to decrease the stress concentrations. The results are presented in diagrams and compared with some of the relevant studies in the literature.