Modeling of LDPE Polymer Film with and without a Crack by Different Anisotropic Yield Functions

Shahid, Sharlin, 1992- (författare): Blekinge Tekniska Högskola,Institutionen för maskinteknik

Islam, Md. Shafiqul, 1984- (författare): Blekinge Tekniska Högskola,Institutionen för maskinteknik

Kao-Walter, Sharon (författare): Blekinge Tekniska Högskola,Institutionen för matematik och naturvetenskap

(creator_code:org_t)

2024
2024
Engelska.
Ingår i: Materials Performance and Characterization. - : ASTM International. - 2379-1365 .- 2165-3992.

Abstract Ämnesord

Stäng

An experimental characterization of the mechanical properties in a low-density polyethylene (LDPE) film is performed in this article. Anisotropy in LDPE at different in-plane material orientations is measured from the stress–strain response and digital image correlation observations of the specimens under uniaxial tension. Finite element simulation of in-plane anisotropy of the material is carried out in Abaqus R2020 using available models like von Mises, Hill 48, Barlat Yld91, and Barlat Yld2004-18P. To express the mechanical behavior at larger strain, a suitable hardening extrapolation model is selected from a trial of several extrapolation models. To validate the simulation methods and the material characterization process, finite element simulation results such as force displacement and strain distribution are compared with the experimental data showing good agreement. Finally, a calibrated anisotropic yield model together with ductile failure criterion is shown to successfully simulate the response of precracked LDPE film under tension. Overall, this study provides valuable insights into the modeling of LDPE polymer films with and without cracks using different anisotropic yield functions and largely simplifies material characterization with some tradeoffs. Copyright © 2024 by ASTM International

TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Teknisk mekanik (hsv//swe)
ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Applied Mechanics (hsv//eng)

Av författaren/redakt...: Shahid, Sharlin, ...; Islam, Md. Shafi ...; Kao-Walter, Shar ...

Om ämnet

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Maskinteknik; och Teknisk mekanik

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