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Development of methodology for experimental parameter identification for inelastic 3D material model
Institute of Structural engineering, Riga Technical University, Latvia.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science. Institute of Structural engineering, Riga Technical University, Latvia.ORCID iD: 0000-0001-9649-8621
Institute of Structural engineering, Riga Technical University, Latvia.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0001-5550-2962
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2022 (English)In: ECCM 2022 - Proceedings of the 20th European Conference on Composite Materials: Composites Meet Sustainability / [ed] Vassilopoulos, Anastasios; Michaud, Véronique, Lausanne, Lausanne: EPFL Lausanne, Composite Construction Laboratory , 2022, Vol. 6, p. 282-289Conference paper, Published paper (Other academic)
Abstract [en]

Lately due to advancement of materials, structures and modeling capacities demand for 3D nonlinear material models implemented in commercial software’s and codes have increased. In order to obtain such implemented model, firstly the model itself and the methodology for experimental parameter identification have to be established. The overall goal is to create a 3D material model, that could account for viscolpasticity, viscoelasticity and damage. Within this study the viscoplastic behavior in axial and lateral direction will be analyzed, thus obtaining the materials 3D viscoplastic behavior. Experimental data for various materials are analyzed. The results showed that viscoplastic strain has the same time and stress dependency in axial and lateral direction. The only difference is in the ration of axial and lateral strain, which is characterized by a single multiplication factor within viscoplastic material model. 

Place, publisher, year, edition, pages
Lausanne: EPFL Lausanne, Composite Construction Laboratory , 2022. Vol. 6, p. 282-289
Keywords [en]
Nonlinearity, 3D, viscoplasticity, strain recovery, creep
National Category
Composite Science and Engineering
Research subject
Polymeric Composite Materials
Identifiers
URN: urn:nbn:se:ltu:diva-96168DOI: 10.5075/epfl-298799_978-2-9701614-0-0Scopus ID: 2-s2.0-85149412735ISBN: 978-2-9701614-0-0 (print)OAI: oai:DiVA.org:ltu-96168DiVA, id: diva2:1743720
Conference
20th European Conference on Composite Materials (ECCM20), June 26-30, 2022, Lausanne, Switzerland
Funder
European Regional Development Fund (ERDF)Available from: 2023-03-16 Created: 2023-03-16 Last updated: 2023-05-15Bibliographically approved

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Varna, JanisAl-Maqdasi, Zainab

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