Buckling and Static Analysis of Curvilinearly Stiffened Plates Using Mesh-Free Method

Tamijani, Ali Y.; Kapania, Rakesh K.

doi:10.2514/1.43917

Cited by 58 publications

(21 citation statements)

References 19 publications

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“…A simply-supported square panel stiffened by a horizontally curved stiffener, studied earlier by Tamijani and Kapania [17], is employed here to validate the present method on bucking analysis for the curvilinearly stiffened isotropic panel under uniform in-plane biaxial loads. The geometry of the panel and the stiffener cross section are shown in Figure 4.…”

Section: Stiffened Isotropic Panel With One Curvilinear Stiffenermentioning

confidence: 98%

“…The nonlinear terms in the strain-displacement relation can be obtained through Green-Lagrange strain tensor. Nonlinear terms due to the in-plane displacements are not included in this study [17]. …”

Section: Modeling Of a Laminated Composite Panelmentioning

confidence: 99%

“…In their work, the problem domain was approximated in terms of a set of orderly or scattered points for both the plate and the stiffeners. Tamijani and Kapania [17] used the same approach as in the work by Peng et al [16] for static and bucking analysis of an isotropic panel stiffened by curvilinear stiffeners. The stiffeners were modeled as 3D curved beams described in the curvilinear coordinate system [3] to capture the stiffener inplane deformation and bending-twist coupling due to the stiffener geometric curvature.…”

Section: Introductionmentioning

confidence: 98%

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Buckling analysis of unitized curvilinearly stiffened composite panels

Zhao

Kapania

2016

Composite Structures

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Section: Stiffened Isotropic Panel With One Curvilinear Stiffenermentioning

confidence: 98%

Section: Modeling Of a Laminated Composite Panelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

See 1 more Smart Citation

Buckling analysis of unitized curvilinearly stiffened composite panels

Zhao

Kapania

2016

Composite Structures

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“…Liew [11] used an EFG method to study the elastic buckling behavior of stiffened and un-stiffened folded plates under partial in-plane edge loads. Tamijani [12] employed the EFG method for buckling and static analysis of plates with arbitrary curvilinear stiffeners. Peng [13] obtained the critical buckling load of ribbed plates using the mesh-free method based on the first-order shear deformation theory.…”

Section: Introductionmentioning

confidence: 99%

FEM and EFG Quasi-Static Explicit Buckling Analysis for Thin-Walled Members

Huang¹,

Li²,

Wang³

2017

OJCE

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The quasi-static explicit finite element method (FEM) and element free Galerkin (EFG) method are applied to trace the post-buckling equilibrium path of thin-walled members in this paper. The factors that primarily control the explicit buckling solutions, such as the computation time, loading function and dynamic relaxation, are investigated and suggested for the buckling analysis of thin-walled members. Three examples of different buckling modes, namely snap-through, overall and local buckling, are studied based on the implicit FEM, quasi-static explicit FEM and EFG method via the commercial software LS-DYNA. The convergence rate and accuracy of the explicit methods are compared with the conventional implicit arc-length method. It is drawn that EFG quasi-static explicit buckling analysis presents the same accurate results as implicit finite element solution, but is without convergence problem and of less-consumption of computing time than FEM.

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“…For metallic materials, material tailoring to improve the structural performance is possible by several ways including varying the wall thickness [2], varying the lattice rib angle of isogrid structures [3], and using curvilinear stiffeners [4]. Although they are practical methods to be used in aerospace structures, they do not benefit from many advantages of composite materials with the directional properties.…”

Section: Introductionmentioning

confidence: 99%

Stiffness tailoring of elliptical composite cylinders for axial buckling performance

Rouhi

Ghayoor

Hoa

et al. 2016

Composite Structures

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General rightsThis document is made available in accordance with publisher policies. Please cite only the published version using the reference above. AbstractAutomated fiber placement (AFP) machines have made it possible to tailor the material stiffness properties in a laminated composite structure by fiber steering. The so-called variable stiffness (VS) laminate can be designed to improve the structural performance of a composite component. Herein, using a metamodeling based design optimization (MBDO) method, elliptical composite cylinders with VS laminate are designed and optimized for maximum axial buckling capacity. The effect of cross-sectional aspect ratio of the elliptical cylinders on the potential improvement of the buckling capacity is also investigated. As the baseline for comparison, for each cross-sectional aspect ratio, the buckling capacity of elliptical cylinders with quasi-isotropic (QI) and optimum constant stiffness (CS) laminates are also calculated. It is found that the buckling capacity of an elliptical composite cylinder can be improved by fiber steering up to 118% compared with its best CS counterpart.

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Buckling and Static Analysis of Curvilinearly Stiffened Plates Using Mesh-Free Method

Cited by 58 publications

References 19 publications

Buckling analysis of unitized curvilinearly stiffened composite panels

Buckling analysis of unitized curvilinearly stiffened composite panels

FEM and EFG Quasi-Static Explicit Buckling Analysis for Thin-Walled Members

Stiffness tailoring of elliptical composite cylinders for axial buckling performance

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