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PL
This paper presents a comparison of pressure for composite laminated cylinders leading to progressive damage of subsequent plies. Laminates made of epoxy resin with glass fibre used in various ply stacking sequences are considered. Numerical calculations based on Mathcad author’s code are performed. Results utilising last ply failure criterion are specified. The effects of subsequent ply angles on load capacity is investigated.
PL
This paper presents a comfort analysis of two different office chair types. The first is made of foam and the second is comprised of auxetic springs with foam upholstery. Several steps of quasi-static loads are chosen for comfort analysis in order to assess the dependence of measures of comfort on the mechanical properties of the applied structural solutions. Numerical analysis is performed by means of ABAQUS software – this allows the comparison and selection of optimal structures with respect to comfort requirements.
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