The Experts below are selected from a list of 27 Experts worldwide ranked by ideXlab platform

Robert G Driver - One of the best experts on this subject based on the ideXlab platform.

  • simplified analysis of flange transverse bending of corrugated web i girders under in plane moment and shear
    Engineering Structures, 2007
    Co-Authors: Hassan H Abbas, Richard Sause, Robert G Driver
    Abstract:

    This paper presents a simplified analysis method for flange transverse bending of corrugated web I-girders under in-plane moment and shear in the elastic range of behavior. Previous research has shown that a corrugated web I-girder under in-plane moment and shear will deflect in-plane and twist out-of-plane simultaneously. The out-of-plane twisting behavior can be analyzed as a flange transverse bending problem. Closed form solutions for this flange transverse bending problem for sinusoidal web profiles and solutions for web profiles with piecewise linear folds using the so-called Fictitious Load method have been produced and published previously. In this paper, the relationships among solutions for various web profiles are investigated. By using the principle of virtual work with virtual displacements in conjunction with the Fictitious Load method, it is shown that the variation of flange transverse bending moments in a corrugated web I-girder is directly related to an area function that depends exclusively on the geometry of the web profile. To exploit this result, a simplified method for analyzing flange transverse bending of corrugated web I-girders, referred to as the C-factor method, is introduced, and its advantages are discussed. In addition, the paper outlines a numerical solution procedure for flange transverse bending in corrugated web I-girders.

  • analysis of flange transverse bending of corrugated web i girders under in plane Loads
    Journal of Structural Engineering-asce, 2007
    Co-Authors: Hassan H Abbas, Richard Sause, Robert G Driver
    Abstract:

    This paper presents theoretical, experimental, and finite-element analysis results for the linear elastic behavior of corrugated web steel I-girders under in-plane Loads. A typical corrugated web steel I-girder consists of two steel flanges welded to a corrugated steel web. Previous research has shown that a corrugated web I-girder under primary moment and shear cannot be analyzed using conventional beam theory alone, and a flange transverse bending analysis is required. A theoretical method, the Fictitious Load method, is presented herein as an analytical tool for quantifying flange transverse bending in corrugated web I-girders. To validate this method, four-point bending experimental results for a large-scale corrugated web I-girder are presented. The measured flange transverse displacements and flange stresses were in good agreement with the theoretical results especially in regions of constant shear. To gain additional insight, finite- element analysis results for the test girder are presented, and compared to both the experimental and theoretical results.

Hassan H Abbas - One of the best experts on this subject based on the ideXlab platform.

  • simplified analysis of flange transverse bending of corrugated web i girders under in plane moment and shear
    Engineering Structures, 2007
    Co-Authors: Hassan H Abbas, Richard Sause, Robert G Driver
    Abstract:

    This paper presents a simplified analysis method for flange transverse bending of corrugated web I-girders under in-plane moment and shear in the elastic range of behavior. Previous research has shown that a corrugated web I-girder under in-plane moment and shear will deflect in-plane and twist out-of-plane simultaneously. The out-of-plane twisting behavior can be analyzed as a flange transverse bending problem. Closed form solutions for this flange transverse bending problem for sinusoidal web profiles and solutions for web profiles with piecewise linear folds using the so-called Fictitious Load method have been produced and published previously. In this paper, the relationships among solutions for various web profiles are investigated. By using the principle of virtual work with virtual displacements in conjunction with the Fictitious Load method, it is shown that the variation of flange transverse bending moments in a corrugated web I-girder is directly related to an area function that depends exclusively on the geometry of the web profile. To exploit this result, a simplified method for analyzing flange transverse bending of corrugated web I-girders, referred to as the C-factor method, is introduced, and its advantages are discussed. In addition, the paper outlines a numerical solution procedure for flange transverse bending in corrugated web I-girders.

  • analysis of flange transverse bending of corrugated web i girders under in plane Loads
    Journal of Structural Engineering-asce, 2007
    Co-Authors: Hassan H Abbas, Richard Sause, Robert G Driver
    Abstract:

    This paper presents theoretical, experimental, and finite-element analysis results for the linear elastic behavior of corrugated web steel I-girders under in-plane Loads. A typical corrugated web steel I-girder consists of two steel flanges welded to a corrugated steel web. Previous research has shown that a corrugated web I-girder under primary moment and shear cannot be analyzed using conventional beam theory alone, and a flange transverse bending analysis is required. A theoretical method, the Fictitious Load method, is presented herein as an analytical tool for quantifying flange transverse bending in corrugated web I-girders. To validate this method, four-point bending experimental results for a large-scale corrugated web I-girder are presented. The measured flange transverse displacements and flange stresses were in good agreement with the theoretical results especially in regions of constant shear. To gain additional insight, finite- element analysis results for the test girder are presented, and compared to both the experimental and theoretical results.

Richard Sause - One of the best experts on this subject based on the ideXlab platform.

  • simplified analysis of flange transverse bending of corrugated web i girders under in plane moment and shear
    Engineering Structures, 2007
    Co-Authors: Hassan H Abbas, Richard Sause, Robert G Driver
    Abstract:

    This paper presents a simplified analysis method for flange transverse bending of corrugated web I-girders under in-plane moment and shear in the elastic range of behavior. Previous research has shown that a corrugated web I-girder under in-plane moment and shear will deflect in-plane and twist out-of-plane simultaneously. The out-of-plane twisting behavior can be analyzed as a flange transverse bending problem. Closed form solutions for this flange transverse bending problem for sinusoidal web profiles and solutions for web profiles with piecewise linear folds using the so-called Fictitious Load method have been produced and published previously. In this paper, the relationships among solutions for various web profiles are investigated. By using the principle of virtual work with virtual displacements in conjunction with the Fictitious Load method, it is shown that the variation of flange transverse bending moments in a corrugated web I-girder is directly related to an area function that depends exclusively on the geometry of the web profile. To exploit this result, a simplified method for analyzing flange transverse bending of corrugated web I-girders, referred to as the C-factor method, is introduced, and its advantages are discussed. In addition, the paper outlines a numerical solution procedure for flange transverse bending in corrugated web I-girders.

  • analysis of flange transverse bending of corrugated web i girders under in plane Loads
    Journal of Structural Engineering-asce, 2007
    Co-Authors: Hassan H Abbas, Richard Sause, Robert G Driver
    Abstract:

    This paper presents theoretical, experimental, and finite-element analysis results for the linear elastic behavior of corrugated web steel I-girders under in-plane Loads. A typical corrugated web steel I-girder consists of two steel flanges welded to a corrugated steel web. Previous research has shown that a corrugated web I-girder under primary moment and shear cannot be analyzed using conventional beam theory alone, and a flange transverse bending analysis is required. A theoretical method, the Fictitious Load method, is presented herein as an analytical tool for quantifying flange transverse bending in corrugated web I-girders. To validate this method, four-point bending experimental results for a large-scale corrugated web I-girder are presented. The measured flange transverse displacements and flange stresses were in good agreement with the theoretical results especially in regions of constant shear. To gain additional insight, finite- element analysis results for the test girder are presented, and compared to both the experimental and theoretical results.

M S Nerantzaki - One of the best experts on this subject based on the ideXlab platform.

  • a boundary element solution to the soap bubble problem
    Computational Mechanics, 2001
    Co-Authors: John T Katsikadelis, M S Nerantzaki
    Abstract:

    The boundary element method (BEM) is applied to the soap bubble problem, that is to the problem of determining the surface that a soap bubble constrained by bounding contours assumes under the action of molecular forces. This is also the shape of a uniformly stretched membrane bounded by one or more non-intersecting curves. As the slopes of the membrane surface are finite, their square can not be neglected and the resulting governing equation is non-linear. The problem is solved using the analogue equation method (AEM). According to this method the non-linear membrane is substituted by a linear one subjected to a Fictitious transverse Load. The Fictitious Load is established using the BEM. Numerical examples are presented which illustrate the method and demonstrate its accuracy. This application of the BEM to non-linear problems shows that BEM is a versatile computational method for all-purpose use in engineering analysis. The solution of the problem at hand is very important in engineering, since the soap bubble surface can be used as the best initial form for membrane roofs.

  • buckling of plates with variable thickness an analog equation solution
    Engineering Analysis With Boundary Elements, 1996
    Co-Authors: M S Nerantzaki, John T Katsikadelis
    Abstract:

    Abstract In this paper the analog equation method (AEM) is applied to buckling analysis of plates with variable thicknss. According to this method the displacement and its derivatives in the fourth order partial differential equation with variable coefficients are expressed in terms of a Fictitious Load which is established from the integral equation solution of an adjoint analog equation. The orginal eigenvalue problem for a differential equation of buckling is converted into a typical linear eigenvalue problem for the discrete values of the Fictitious Load, from which the buckling Loads are established numerically. Numerical results are presented which illustrate the effectiveness of the proposed method.

John T Katsikadelis - One of the best experts on this subject based on the ideXlab platform.

  • a boundary element solution to the soap bubble problem
    Computational Mechanics, 2001
    Co-Authors: John T Katsikadelis, M S Nerantzaki
    Abstract:

    The boundary element method (BEM) is applied to the soap bubble problem, that is to the problem of determining the surface that a soap bubble constrained by bounding contours assumes under the action of molecular forces. This is also the shape of a uniformly stretched membrane bounded by one or more non-intersecting curves. As the slopes of the membrane surface are finite, their square can not be neglected and the resulting governing equation is non-linear. The problem is solved using the analogue equation method (AEM). According to this method the non-linear membrane is substituted by a linear one subjected to a Fictitious transverse Load. The Fictitious Load is established using the BEM. Numerical examples are presented which illustrate the method and demonstrate its accuracy. This application of the BEM to non-linear problems shows that BEM is a versatile computational method for all-purpose use in engineering analysis. The solution of the problem at hand is very important in engineering, since the soap bubble surface can be used as the best initial form for membrane roofs.

  • buckling of plates with variable thickness an analog equation solution
    Engineering Analysis With Boundary Elements, 1996
    Co-Authors: M S Nerantzaki, John T Katsikadelis
    Abstract:

    Abstract In this paper the analog equation method (AEM) is applied to buckling analysis of plates with variable thicknss. According to this method the displacement and its derivatives in the fourth order partial differential equation with variable coefficients are expressed in terms of a Fictitious Load which is established from the integral equation solution of an adjoint analog equation. The orginal eigenvalue problem for a differential equation of buckling is converted into a typical linear eigenvalue problem for the discrete values of the Fictitious Load, from which the buckling Loads are established numerically. Numerical results are presented which illustrate the effectiveness of the proposed method.