Open-Access-Journals @ Otto-von-Guericke-Universität Magdeburg
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Modellierung der Strömungsvorgänge in Radialstromreaktoren ohne Berücksichtigung der chemischen Reaktion
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Berücksichtigung von Zwangsbedingungen in der FEM mittels der Penalty-Funktion-Methode
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Die Knicklast des gelenkig gelagerten Stabes mit Kragarm unter tangententreuer Belastung
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Untersuchung und Optimierung der dynamischen Eigenschaften von Bergbaukombines mit dem Ziel der Erhöhung ihrer Zuverlässigkeit, Lebensdauer und Leistungsfähigkeit
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Experimental and Numerical Investigation of the Material Behavior of semi-crystalline Polyamide 6
No full textIn the current work, the tensile properties of semi-crystalline Polyamide 6 are experimentally investigated for varying degrees of crystallinity, temperatures, and loading rates. Based on the experimental results, a phenomenological constitutive framework at finite strains is derived in a thermodynamically consistent manner. To this end, a hyperelastic-plastic intermolecular resistance and viscous molecular network resistance are considered. Non-linear kinematic and isotropic hardening as well as nonlinear relaxation behavior are incorporated, to account for the experimentally observed behavior. It is evident that the mechanical behavior of semi-crystalline polymers exhibits complex dependencies on the degree of crystallinity and the temperature. To capture these experimental findings, both quantities serve as input parameters. A staggered parameter identification scheme is proposed to obtain a unique set of material parameters. Finally, the great capabilities of the proposed framework, to accurately predict the three-dimensional, visco-hyperelastic-plastic material response are demonstrated
