A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Postbuckling analysis of orthogonally-stiffened plates by a simplified spline finite strip method
https://orcid.org/0000-0003-2769-0147
Abstract Postbuckling behavior of stiffened laminated composite plates is investigated using a simplified spline finite strip method. The base plate and stiffeners are formulated by the first-order shear deformation plate theory and the Timoshenko beam theory, respectively. According to the compatibility condition between the base plate and stiffener, the beam displacements are expressed by the fundamental middle surface displacement component functions of the base plate. The beam-plate assembly is then discretized exclusively by the base plate strips. The longitudinal spline interpolation coefficients of the strip are transformed into actual freedoms of each nodal line, so that the stiffness contribution of transverse stiffeners can be easily incorporated into the strips. The nonlinear governing equation is solved using the Newton–Raphson method. The present beam-plate model is applicable to both global and local plate postbuckling analyses of stiffened plates, and the modification of the spline interpolation makes the spline finite strip method (SFSM) versatile for both the transversely- and orthogonally-stiffened plates. The effectiveness and capability of developed postbuckling analysis are verified by comparisons with numerical finite element results. Parametric studies are conducted to investigate postbuckling behavior of stiffened laminated composite plates. The present simplified SFSM is capable of performing both the critical buckling load prediction and postbuckling analysis of either transversely-stiffened or orthogonally-stiffened laminated composite plates.
Highlights A simplified spline finite strip method proposed for postbuckling of stiffened plates. The stiffeners formulated by the Timoshenko beam theory. The beam-plate assembly discretized exclusively by the base plate strips. Applicable to both longitudinally- and orthogonally-stiffened plates.
Postbuckling analysis of orthogonally-stiffened plates by a simplified spline finite strip method
https://orcid.org/0000-0003-2769-0147
Abstract Postbuckling behavior of stiffened laminated composite plates is investigated using a simplified spline finite strip method. The base plate and stiffeners are formulated by the first-order shear deformation plate theory and the Timoshenko beam theory, respectively. According to the compatibility condition between the base plate and stiffener, the beam displacements are expressed by the fundamental middle surface displacement component functions of the base plate. The beam-plate assembly is then discretized exclusively by the base plate strips. The longitudinal spline interpolation coefficients of the strip are transformed into actual freedoms of each nodal line, so that the stiffness contribution of transverse stiffeners can be easily incorporated into the strips. The nonlinear governing equation is solved using the Newton–Raphson method. The present beam-plate model is applicable to both global and local plate postbuckling analyses of stiffened plates, and the modification of the spline interpolation makes the spline finite strip method (SFSM) versatile for both the transversely- and orthogonally-stiffened plates. The effectiveness and capability of developed postbuckling analysis are verified by comparisons with numerical finite element results. Parametric studies are conducted to investigate postbuckling behavior of stiffened laminated composite plates. The present simplified SFSM is capable of performing both the critical buckling load prediction and postbuckling analysis of either transversely-stiffened or orthogonally-stiffened laminated composite plates.
Highlights A simplified spline finite strip method proposed for postbuckling of stiffened plates. The stiffeners formulated by the Timoshenko beam theory. The beam-plate assembly discretized exclusively by the base plate strips. Applicable to both longitudinally- and orthogonally-stiffened plates.
Postbuckling analysis of orthogonally-stiffened plates by a simplified spline finite strip method
https://orcid.org/0000-0003-2769-0147
Abstract Postbuckling behavior of stiffened laminated composite plates is investigated using a simplified spline finite strip method. The base plate and stiffeners are formulated by the first-order shear deformation plate theory and the Timoshenko beam theory, respectively. According to the compatibility condition between the base plate and stiffener, the beam displacements are expressed by the fundamental middle surface displacement component functions of the base plate. The beam-plate assembly is then discretized exclusively by the base plate strips. The longitudinal spline interpolation coefficients of the strip are transformed into actual freedoms of each nodal line, so that the stiffness contribution of transverse stiffeners can be easily incorporated into the strips. The nonlinear governing equation is solved using the Newton–Raphson method. The present beam-plate model is applicable to both global and local plate postbuckling analyses of stiffened plates, and the modification of the spline interpolation makes the spline finite strip method (SFSM) versatile for both the transversely- and orthogonally-stiffened plates. The effectiveness and capability of developed postbuckling analysis are verified by comparisons with numerical finite element results. Parametric studies are conducted to investigate postbuckling behavior of stiffened laminated composite plates. The present simplified SFSM is capable of performing both the critical buckling load prediction and postbuckling analysis of either transversely-stiffened or orthogonally-stiffened laminated composite plates.
Highlights A simplified spline finite strip method proposed for postbuckling of stiffened plates. The stiffeners formulated by the Timoshenko beam theory. The beam-plate assembly discretized exclusively by the base plate strips. Applicable to both longitudinally- and orthogonally-stiffened plates.
Postbuckling analysis of orthogonally-stiffened plates by a simplified spline finite strip method
Wang, Yanli (author) / Qiao, Pizhong (author)
Thin-Walled Structures ; 166
2021-06-26
Article (Journal)
Electronic Resource
English
Ultimate Compressive Strength of Orthogonally Stiffened Steel Plates
| Online Contents | 1996
Ultimate Compressive Strength of Orthogonally Stiffened Steel Plates
| British Library Online Contents | 1996
Higher-Order Finite Strip Method for Postbuckling Analysis of Imperfect Composite Plates
| Online Contents | 2002
Spline Finite Strip Analysis of Piezoelectric Composite Plates
| British Library Conference Proceedings | 2007
Postbuckling Analysis of Thin Rectangular Laminated Plates by Spline FSM
| British Library Conference Proceedings | 1998