Function-based reconstruction of the fiber orientation distribution function of short-fiber-reinforced polymers

Nabergoj, Matija (avtor), Urevc, Janez (avtor), Halilovič, Miroslav (avtor)

Reconstruction of the fiber orientation distribution function (ODF) from injection molding simulation results is commonly performed using the so-called series-based approach. However, with the development of advanced material constitutive models, the need has emerged to overcome the drawbacks of this approach, such as negative values for certain orientation states and limitations in describing highly concentrated probabilities. In this work, an approach to shift the reconstruction procedure from series-based to function-based is proposed, achieved by deducing an appropriate two-parametric form of the ODF. We demonstrate that the proposed ODF can be uniquely reconstructed from the second-order orientation tensors obtained from the injection molding simulations and that the approach does not suffer from the aforementioned limitations, being capable of accurately describing even the extreme orientation states without yielding nonphysical results. Based on the proposed ODF, a new closure approximation is also developed and used to verify the deduced form in flow-induced orientation predictions.

• Jezik: Angleški jezik
• Ključne besede: short-fiber composites, material modelling, injection molding, fiber orientation distribution function, closure approximation
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FS - Fakulteta za strojništvo
• Status publikacije: Objavljeno
• Različica publikacije: Recenzirani rokopis
• Datum objave: 01.01.2022
• Leto izida: 2022
• Št. strani: 32 str.
• Številčenje: Vol. 66, iss. 1
• PID: 20.500.12556/RUL-160687
• UDK: 678.027.74:532.135
• ISSN pri članku: 0148-6055
• DOI: 10.1122/8.0000358
• COBISS.SI-ID: 89774851
• Datum objave v RUL: 03.09.2024

Gradivo je del revije

• Naslov: Journal of rheology
• Skrajšan naslov: J. rheol.
• Založnik: J. Wiley for the Society of Rheology
• ISSN: 0148-6055
• COBISS.SI-ID: 25787392

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: kompoziti s kratkimi vlakni, porazdelitvena funkcija orientacije vlaken, aproksimacija v zaprti obliki

Projekti

• Financer: ARIS - Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije
• Številka projekta: P2-0263
• Naslov: Mehanika v tehniki