Numerical and experimental failure analysis of thin-walled composite columns with a top-hat cross section under axial compression

Różyło, Patryk; Dębski, H.; Wysmulski, Paweł; Falkowicz, Katarzyna

doi:10.1016/j.compstruct.2018.07.068

Cited by 52 publications

(31 citation statements)

References 32 publications

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“…where: d f , d m and d s are the specific damage variables for fiber, matrix and shear failure modes, respectively. The damage initiations of typical, well-known composite materials were defined using the Hashin's criterion, which has been described in many scientific publications [3,10]. The Hashin's criterion takes into account four (independent) damage initiation variables: fiber tension or compression and matrix tension or compression.…”

Section: Damage Initiationmentioning

confidence: 99%

“…The contemporary engineering approach focuses on the use of modern materials characterized by a high level of load-carrying capacity, with a low weight of the construction. Materials fulfilling this concept belong to the class of materials commonly called composites, which as thin-walled composite columns, are characterized by being prone to the well-known phenomenon of loss of stability [1][2][3][4]. The loss of stability, commonly known as buckling, occurs as a result of the critical load and is a process of transition of the linear operating range of a structure to a non-linear one.…”

Section: Introductionmentioning

confidence: 99%

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Progressive Failure Analysis of Thin-Walled Composite Structures Verified Experimentally

et al. 2020

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The subject of the presented research was a thin-walled composite column made of CFRP (carbon-epoxy laminate). The test sample had a top-hat cross-section with a symmetrical arrangement of laminate layers [90/−45/45/0]s. The composite structure was subjected to the process of axial compression. Experimental and numerical tests for the loss of stability and load-carrying capacity of the composite construction were carried out. The numerical buckling analysis was carried out based on the minimum potential energy criterion (based on the solution of an eigenvalue problem). The study of loss of load-carrying capacity was performed on the basis of a progressive failure analysis, solving the problem of non-linear stability based on Newton-Raphson’s incremental iterative method. Numerical results of critical and post-critical state were confronted with experimental research in order to estimate the vulnerable areas of the structure, showing areas prone to damage of the material.

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Section: Damage Initiationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Progressive Failure Analysis of Thin-Walled Composite Structures Verified Experimentally

et al. 2020

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“…Afterwards, these equations are solved using values of equilibrium conditions, and their outcome used to compute sought quantities, i.e. tensions and stress distribution or deformation of a body [41][42][43][44].…”

Section: Fea Methodsmentioning

confidence: 99%

Stress distribution in the knee joint in relation to tibiofemoral angle using the finite element method

Karpiński

Jaworski²,

Jonak

et al. 2019

MATEC Web Conf.

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The article presents the results of a preliminary study on the structural analysis of the knee joint, considering changes in the mechanical properties of the articular cartilage of the joint. Studies have been made due to the need to determine the tension distribution occurring in the cartilage of the human knee. This distribution could be the starting point for designing custom made human knee prosthesis. Basic anatomy, biomechanical analysis of the knee joint and articular cartilage was introduced. Based on a series of computed tomography [CT] scans, the 3D model of human knee joint was reverse-engineered, processed and exported to CAD software. The static mechanical analysis of the knee joint model was conducted using the finite element method [FEM], in three different values of tibiofemoral angle and with varying mechanical properties of the cartilage tissue. Main conclusions of the study are: the capability to absorb loads by articular cartilage of the knee joint is preliminary determined as decreasing with increasing degenerations of the cartilage and with age of a patient. Without further information on changes of cartilage’s mechanical parameters in time it is hard to determine the nature of relation between mentioned capability and these parameters.

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“…An example of such a loss is shown in Fig.1. The issue of stability is discussed in many works [3][4][5][6][7]. However, it is possible to improve carrying capacity of the plate by making a notch in it and inducing deformations according to the higher, bending-twisting form of buckling, as it is described in this paper.…”

Section: Introductionmentioning

confidence: 97%

Stiffening material impact on the work of thin-walled element

Falkowicz

2019

MATEC Web Conf.

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The subject of research is a numerical analysis of a thin-walled plate with a cut-out and stiffening, made of laminate and subjected to axial compression. The plate was made of a carbon-epoxy composite - a laminate consisting of eight symmetrically oriented plies. The scope of the research included a linear and nonlinear numerical analysis using Finite Element Method (FEM). The main objective of the study was to investigate behaviour of the considered plate made of various stiffening materials, under quasi-static compression to achieve Tsai-Wu criterion. The numerical analysis was conducted with the Abaqus, commercial FEM software package.

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Numerical and experimental failure analysis of thin-walled composite columns with a top-hat cross section under axial compression

Cited by 52 publications

References 32 publications

Progressive Failure Analysis of Thin-Walled Composite Structures Verified Experimentally

Progressive Failure Analysis of Thin-Walled Composite Structures Verified Experimentally

Stress distribution in the knee joint in relation to tibiofemoral angle using the finite element method

Stiffening material impact on the work of thin-walled element

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