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Finite element analyses of K-span corrugated cold formed steel arch under compressive loads
HAMK TECH, a research unit in the Hämeenlinna campus of Häme University of Applied Sciences Finland, commissions the research topic of this master thesis. This research-oriented thesis primarily aimed to develop an efficient finite element model for the k-span corrugated steel arch specimens under different compressive loads using finite element method code in LS-Dyna software. The simulation results are then compared and validated with the uniaxial compression test performed at the Hamk Tech Research Unit laboratory by Al-Maisari (2020). In addition, the analysis method utilized in the finite element modelling of the k-span corrugated steel specimen using the LS-Dyna program is defined according to the following procedure as geometry imported IGES file, mesh generation, the definition material properties, the definition of boundary conditions and applied loads, control-termination, and output. Two compression samples of the k-span corrugated steel specimen with two thicknesses, 1.1 mm and 0.8 mm, of the same radius were modelled with elastoplastic material inputs parameters. Besides, the explicit quasi-static simulations of the FE models were run with fully integrated shell elements in LS-Dyna program. The generated simulation results were calibrated to investigate the load versus displacement curves and stress contour of Von Mises stress at different failure faces for both thicknesses of the FE models. On top of that, a comprehensive calibrated load-displacement graph results of the experimental test and the FE numerical simulations were analyzed and compared. The stress contour plot of the Von-Mises stress at different displacement loading points was also analyzed and compared. Interestingly, the numerical analysis research findings indicate that the LS-Dyna simulation results under compressive loads on the k-span FE model replicate similarly to the uniaxial compression test results.
Finite element analyses of K-span corrugated cold formed steel arch under compressive loads
HAMK TECH, a research unit in the Hämeenlinna campus of Häme University of Applied Sciences Finland, commissions the research topic of this master thesis. This research-oriented thesis primarily aimed to develop an efficient finite element model for the k-span corrugated steel arch specimens under different compressive loads using finite element method code in LS-Dyna software. The simulation results are then compared and validated with the uniaxial compression test performed at the Hamk Tech Research Unit laboratory by Al-Maisari (2020). In addition, the analysis method utilized in the finite element modelling of the k-span corrugated steel specimen using the LS-Dyna program is defined according to the following procedure as geometry imported IGES file, mesh generation, the definition material properties, the definition of boundary conditions and applied loads, control-termination, and output. Two compression samples of the k-span corrugated steel specimen with two thicknesses, 1.1 mm and 0.8 mm, of the same radius were modelled with elastoplastic material inputs parameters. Besides, the explicit quasi-static simulations of the FE models were run with fully integrated shell elements in LS-Dyna program. The generated simulation results were calibrated to investigate the load versus displacement curves and stress contour of Von Mises stress at different failure faces for both thicknesses of the FE models. On top of that, a comprehensive calibrated load-displacement graph results of the experimental test and the FE numerical simulations were analyzed and compared. The stress contour plot of the Von-Mises stress at different displacement loading points was also analyzed and compared. Interestingly, the numerical analysis research findings indicate that the LS-Dyna simulation results under compressive loads on the k-span FE model replicate similarly to the uniaxial compression test results.
Finite element analyses of K-span corrugated cold formed steel arch under compressive loads
Nwankwo, Gordian (author)
2023-01-01
URN:NBN:fi:amk-2023060621895
Theses
Electronic Resource
English
Sustainable Technologies , numerical methods , finite element method , numerical analysis , strength theory , steel constructions , modelling (creation related to information) , partial differential equations , Degree Programme in Master of Engineering , strains and stresses , simulation , fi=Konetekniikka|sv=Maskinteknik|en=Mechanical Engineering| , mathematical models
DDC:
690
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