Numerical analysis of stress state during single point bending in DMTA examinations

• Autorzy: Gnatowski A. , Palutkiewicz P. , Bociąga E.
• Języki publikacji: EN

Abstrakty

EN

Purpose: Determination of stresses at the change of Young's modulus values in temperature function for samples made of PA 6.6 filled with glass fibre, by DMTA method, was the aim of work. Design/methodology/approach: Investigations were carried out for samples subjected to the one-axial bending. The change in the value of the dynamic Young modulus and the mechanical loss tangent in function of temperature and oscillation frequency by the DMTA method was determined. The computer simulations of changes of the stress and strain distribution within the range of elastic strains and the glass transition phase were done. Findings: Examinations made possible the determination of dynamic mechanical proprieties PA 6.6 filled with glass fibre and changes in the stress distribution during the dynamic loading of the sample in function of temperature. Higher values of the Young modulus were observed within the range of elasticity and the glass transition phase. The stress increased with the increase in Young's modulus, at the strain generated from push rot oscillation. Research limitations/implications: The accuracy of used approximate method for computer simulations was not sufficient to indicate the Bielajew point. Practical implications: Investigated polymeric composite is characterized by viscoelastic properties, so all indicators of the physical and chemical properties depend on not only the time but and also the temperature. Originality/value: To characterize properties of investigated composite and to estimate the composite usage in particular conditions, dependences of the storage module and the mechanical losses tangent was determined in function of temperature at the one-axial bending.

Słowa kluczowe

EN

computer assistance in engineering tasks and scientific research; numerical techniques; computational material science; research methodology

PL

techniki numeryczne; komputerowa nauka o materiałach; metodyka badań

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2008
• Tom: Vol. 28, nr 1
• Strony: 47--50
• Opis fizyczny: Bibliogr. 21 poz., il., wykr.

Twórcy

autor

Gnatowski A.

autor

Palutkiewicz P.

autor

Bociąga E.

• Department of Polymer Processing and Production Management, Częstochowa University of Technology, ul. Armii Krajowej 19c, 42-200 Częstochowa, Poland,

Bibliografia

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