Thermo‐mechanical modeling of the temperature dependent forming behavior of thermoplastic prepregs

Research output: Contribution to journalResearch articleContributedpeer-review


Numerical optimization of the manufacturing process of hybrid lightweight structures consisting of fiber-reinforced plastics is of great importance. This article introduces an industry-oriented modeling approach for the thermoforming process of thermoplastic prepregs. A laminate model combined with established elastic-plastic constitutive laws is used for the numerical treatment of the temperature dependent material behavior of the composite. The mechanical properties of the Polyamide 66 (PA66) matrix are acquired from a data sheet provided by the manufacturer. Experiments including tensile, shear, and bending tests are performed to characterize the effective deformation behavior of the prepreg in the full temperature range. Appropriate model parameters are determined to represent the temperature dependent deformation behavior of the composite according to the experimental observations. The parameterized material model for the prepreg is eventually applied in the simulation of thermoforming processes to show the influence of process and material parameters on the forming behavior of thermoplastic prepregs.


Original languageEnglish
Article numbere12373
Number of pages13
JournalEngineering Reports
Issue number7-8
Early online date14 Feb 2021
Publication statusPublished - 17 Aug 2022

External IDs

unpaywall 10.1002/eng2.12373
Mendeley ca70ed91-b8a2-3cba-a87f-0a3e9a2e630a
Scopus 85110263289
ORCID /0000-0003-3358-1545/work/142237134
ORCID /0000-0002-8416-3311/work/142239478
ORCID /0000-0003-1370-064X/work/142243435
ORCID /0000-0002-2268-6635/work/142251185



  • fiber-reinforced plastic, parameter identification, thermo-mechanical modeling, thermoforming, thermoplastics