izpis_h1_title_alt

Numerical and experimental investigations of polymer viscoelastic materials obtained by 3D printing
ID Ibrulj, Jusuf (Avtor), ID Džaferović, Ejub (Avtor), ID Obućina, Murčo (Avtor), ID Kitek Kuzman, Manja (Avtor)

.pdfPDF - Predstavitvena datoteka, prenos (4,72 MB)
MD5: 266BA62471B83278E640C9AF832AE56F
URLURL - Izvorni URL, za dostop obiščite https://www.mdpi.com/2073-4360/13/19/3276 Povezava se odpre v novem oknu

Izvleček
The aim of this research is to determine the relaxation and creep modulus of 3D printed materials, and the numerical research is based on the finite volume method. The basic material for determining these characteristics is ABS (acrylonitrile butadiene styrene) plastic as one of the most widely used polymeric materials in 3D printing. The experimental method for determining the relaxation functions involved the use of a creep test, in which a constant increase of the stress of the material was performed over time to a certain predetermined value. In addition to this test, DMA (dynamic mechanical analysis) analysis was used. Determination of unknown parameters of relaxation functions in analytical form was performed on the basis of the expression for the storage modulus in the frequency domain. The influence of temperature on the values of the relaxation modulus is considered through the determination of the shift factor. Shift factor is determined on the basis of a series of tests of the relaxation function at different constant temperatures. The shift factor is presented in the form of the WLF (Williams-Landel-Ferry) equation. After obtaining such experimentally determined viscoelastic characteristics with analytical expressions for relaxation modulus and shift factors, numerical analysis can be performed. For this numerical analysis, a mathematical model with an incremental approach was used, as developed in earlier works although with a certain modification. In the experimental analysis, the analytical expression for relaxation modulus in the form of the Prony series is used, and since it is the sum of exponential functions, this enables the derivation of a recursive algorithm for stress calculation. Numerical analysis was performed on several test cases and the results were compared with the results of the experiment and available analytical solutions. A good agreement was obtained between the results of the numerical simulation and the results of the experiment and analytical solutions.

Jezik:Angleški jezik
Ključne besede:relaxation modulus, creep modulus, viscoelasticity, numerical experimental method, Prony series
Vrsta gradiva:Članek v reviji
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:BF - Biotehniška fakulteta
Status publikacije:Objavljeno
Različica publikacije:Objavljena publikacija
Leto izida:2021
Št. strani:24 str.
Številčenje:Vol. 13, iss. 19, art. 3276
PID:20.500.12556/RUL-136328 Povezava se odpre v novem oknu
UDK:539.4
ISSN pri članku:2073-4360
DOI:10.3390/polym13193276 Povezava se odpre v novem oknu
COBISS.SI-ID:78897923 Povezava se odpre v novem oknu
Datum objave v RUL:25.04.2022
Število ogledov:1216
Število prenosov:79
Metapodatki:XML RDF-CHPDL DC-XML DC-RDF
:
Kopiraj citat
Objavi na:Bookmark and Share

Gradivo je del revije

Naslov:Polymers
Skrajšan naslov:Polymers
Založnik:Molecular Diversity Preservation International
ISSN:2073-4360
COBISS.SI-ID:517951257 Povezava se odpre v novem oknu

Licence

Licenca:CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by/4.0/deed.sl
Opis:To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
Začetek licenciranja:01.10.2021

Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:modul relaksacije, modul lezenja, viskoelastičnost, numerične eksperimentalne metode, Pronyjeva vrsta

Projekti

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:P4-0015
Naslov:Les in lignocelulozni kompoziti

Podobna dela

Podobna dela v RUL:
Podobna dela v drugih slovenskih zbirkah:

Nazaj