Contact stresses between seat cushion and the human body. Comparison results of numerical calculation with sensor investigations (CROSBI ID 555743)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Smardzewski, Jerzy ; Prekrat, Silvana ; Pervan, Stjepan
engleski
Contact stresses between seat cushion and the human body. Comparison results of numerical calculation with sensor investigations
Opti misati on of seat construction cushions is associated with the need to investigate their softness employing, for this purpose, various kinds of sensors. However, it is by no means apparent whether the widespread use of hard sensors instead of soft ones modelled to the shape and anatomically resembling parts of human body is justified. The aim of the performed investigations was: to determine seat cushion stiffness of a chair derived from a set of diningroom furniture, to determine values and distributions of contact strains on the seat surface caused by sensors of diff erent hardness, numerical calculation of contact strains between the seat cushion and the sensor and to verify the results of these calculations with the results of laboratory experiments. The performed trials showed that the seat cushion stiffness assessment and evaluation of contact stresses on their surface should be carried out employing an equally stiff sensor. In numerical calculations, polyurethane foams should be modelled as hyperfoam bodies of σ =f(ε ) characteristics determined in an axial compression test. Contact stresses between the seat cushion and the user’ s body should be reduced as a result of application of a frictionless connection of thin layers of polyurethane foams with foam forming the proper elastic layer of the seat.
seat cushion; human body; contact stresses; numerical analysis
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nije evidentirano
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Podaci o prilogu
143-150.
2009.
objavljeno
Podaci o matičnoj publikaciji
Drvo je prvo – novi materijali, kvaliteta i dizajn proizvoda
Grbac, Ivica
Zagreb: Šumarski fakultet Sveučilišta u Zagrebu
978-953-292-012-3
Podaci o skupu
20. jubilarno međunarodno znanstveno savjetovanje "Drvo je prvo – novi materijali, kvaliteta i dizajn proizvoda"
poster
16.10.2009-16.10.2009
Zagreb, Hrvatska