Szczegóły publikacji

Opis bibliograficzny

A new CDM-based approach for the nonlinear numerical structural analysis of flax fiber reinforced plastic / Rostislav Svidler, Roman Rinberg, Sascha Mueller, Lothar Kroll // Modelling [Dokument elektroniczny]. — Czasopismo elektroniczne ; ISSN 2673-3951. — 2025 — vol. 6 iss. 1 art. no. 5, s. 1–27. — Wymagania systemowe: Adobe Reader. — Bibliogr. s. 25–27, Abstr. — Publikacja dostępna online od: 2025-01-15. — L. Kroll - afiliacja: Chemnitz University of Technology, Chemnitz, Germany

Autorzy (4)

  • Svidler Rostislav
  • Rinberg Roman
  • Mueller Sascha
  • Kroll Lothar

Słowa kluczowe

continuum damage mechanicsnatural fiber reinforced plasticsflax fiber reinforced plasticsnon linear material behavioruser defined field

Dane bibliometryczne

ID BaDAP163651
Data dodania do BaDAP2025-10-27
Tekst źródłowyURL
DOI10.3390/modelling6010005
Rok publikacji2025
Typ publikacjiartykuł w czasopiśmie
Otwarty dostęptak
Creative Commons
Czasopismo/seriaModelling

Abstract

Fibre-reinforced polymers based on natural fibers, such as flax fibers, exhibit pronounced nonlinear orthotropic material behavior. This presents a significant challenge in finite element analysis (FEA) simulations, as the nonlinear constitutive models available in commercial FEA tools are difficult to apply and fail to capture all the material’s specific characteristics. Relying on initial or reduced secant moduli in linear quasi-static analyses of deformations or stress states can result in inaccurate outcomes and overly optimistic strength predictions, particularly in compression-dominated cases. However, with appropriate modifications, classical laminate theory (CLT) can be adapted for nonlinear analysis. This involves iteratively updating the components of the stiffness matrix for the unidirectional (UD) ply during the calculation process based on the current strain state and stress interactions. This study presents and discusses a computational algorithm for the FEA software ABAQUS/CAE 2019, which incorporates material-related orthotropic nonlinearities and stress-dependent interactions within the CLT framework. The algorithm represents a single-scale material model at the meso level (UD ply) and is based on the concept of orthotropic elasto-damage within the framework of continuum damage mechanics (CDM) theory. Numerical implementation is achieved through a user-defined field (USDFLD) subroutine, accompanied by a pre-processing Python script for managing experimental data, computing data fields, and calculating parameters. As shown below, this type of implementation appears justified compared to a user material subroutine (UMAT) subroutine in terms of computational efficiency and practicality.