The analysis of buckling and post buckling in the compressed composite columns
Journal Title: Archives of Materials Science and Engineering - Year 2017, Vol 1, Issue 85
Abstract
Purpose: The aim of the study was to analyse the work of a thin-walled C-shaped profile, made of a carbon-epoxy composite, which was subjected to unified axial compression. Design/methodology/approach: The scope of the study included the analysis of the critical and low post-critical state by the use of numerical and experimental methods. As a result of the experimental test, performed on the physical specimen, post-critical equilibrium path had been determined, on the basis of which, with use of the adequate approximation method critical load value was defined. The next stage of the research was devoted to numerical analysis based on the finite element method. The studies were carried out on a scope of the linear analysis of the eigenvalue problem, on the basis of witch the critical value of load for mathematical model was found. The next step of the numerical tests was covering the nonlinear analysis of the low post-critical state for the model with geometrical imperfection, corresponding to the lowest form of buckling. Findings: The result of the study was to determine the value of the critical load, on the basis of the experimentally obtained post-critical equilibrium paths of the structure, with use of two independent methods of Approximation: Koiter's method and the method of the vertical tangent. The results of the analysis were compared with the value of the critical load determined by using finite element method. Research limitations/implications: The obtained results of study provide the important information concerning the modelling techniques of the thin-walled structures made of composite materials, while confirming the adequacy of the numerical models developed both in the calculation of eigenvalue problem, as well as non-linear static analysis in the post-critical range. Originality/value: The research provided the necessary knowledge of the behaviour of the critical and low post-critical of the thin-walled structure made of modern orthotropic material (CFRP).
Authors and Affiliations
P. Wysmulski
Keywords
Related Articles
- EP ID EP190013
- DOI 10.5604/01.3001.0010.1556
- Views 79
- Downloads 0
The influence of the parameters of heat treatment on the mechanical properties of welded joints
Purpose: The main goal of the work is to determine the influence of the parameters of stress relief annealing on the mechanical and structural properties of welded joints made of chromium-molybdenum type 10CrMo9-10 steel...
CAMSS 2016 – a new software for a computer aided selection of engineering materials
Purpose: The main purpose of the paper is to present Computer Aided Materials SelectionSoftware 2016 (CAMSS 2016) program, as well as to show its potential applicability as a toolfor the selection of engineering material...
Modelling of the effects of laser modification of gas-nitrided layer
Purpose: The effects of laser processing parameters on the dimensions of simple laser tracks, produced on the previously nitrided layer, were analysed. Design/methodology/approach: Gas nitriding is one...
Temperature changes influenced by different types of light curing units during polymerization of resin-based dental composite materials
Purpose: of this study was to evaluate the influence of LCU type on temperature changesduring polymerization of two resin-based composites with different matrices (silorane-basedand methacrylate-based).Design/methodology...
Biological properties of nutshell and microcrystalline cellulose (MCC) filled high density polyethylene composites
Purpose: The composites based on natural fibre and wood can be destroyed by fungiattack, even the lignocellulosic materials were used as filler in hydrophobic thermoplasticmatrix. The aim of this study was to investigate...