Extracting material parameters of silicone elastomers under biaxial tensile tests using virtual fields method and investigating the effect of missing deformation data close to specimen edges on parameter identification

Mingliang Jiang, Zhujiang Wang*, Alan D. Freed, Michael R. Moreno, Veysel Erel, Adam Dubrowski

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

In this work, virtual fields method (VFM) is applied to extract the constitutive parameter of silicone elastomers under equi-biaxial and general biaxial tests; the influence of missing deformation data near specimen edges and noise introduced by digital image correlation (DIC) on parameter identification using VFM is investigated. The results indicate that the negative impact of the missing data and noise can be mitigated by scaling the load applied to the specimen boundary properly and extracting parameters based on the deformation fields of all loading steps through the least square method.

Original languageEnglish
JournalMechanics of Advanced Materials and Structures
DOIs
StateAccepted/In press - 2021
Externally publishedYes

Keywords

  • Biaxial tensile test
  • digital image correlation
  • material parameter identification
  • missing deformation data
  • silicone elastomer
  • virtual fields method

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