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Schwindungssimulation blasgeformter Bauteile unter Verwendung viskoelastischer Materialmodelle
Author(s) -
Michels P.,
Bruch O.,
EversDietze B.,
Grotenburg D.,
Ramakersvan Dorp E.,
Altenbach H.
Publication year - 2022
Publication title -
materialwissenschaft und werkstofftechnik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.285
H-Index - 38
eISSN - 1521-4052
pISSN - 0933-5137
DOI - 10.1002/mawe.202100350
Subject(s) - shrinkage , viscoelasticity , materials science , orthotropic material , extrusion , composite material , process (computing) , sensitivity (control systems) , thermal , mechanical engineering , computer science , thermodynamics , finite element method , structural engineering , engineering , physics , electronic engineering , operating system
The utilization of simulation procedures is gaining increasing attention in the product development of extrusion blow molded parts. However, some simulation steps, like the simulation of shrinkage and warpage, are still associated with uncertainties. The reason for this is on the one hand a lack of standardized interfaces for the transfer of simulation data between different simulation tools, and on the other hand the complex time‐, temperature‐ and process‐dependent material behavior of the used semi crystalline polymers. Using a new vendor neutral interface standard for the data transfer, the shrinkage analysis of a simple blow molded part is investigated and compared to experimental data. A linear viscoelastic material model in combination with an orthotropic process‐ and temperature‐dependent thermal expansion coefficient is used for the shrinkage prediction. A good agreement is observed. Finally, critical parameters in the simulation models that strongly influence the shrinkage analysis are identified by a sensitivity study.