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Contribution to the Micromechanical Simulation of Short Fiber Reinforced Plastics – Deformation and Failure

In recent years the Finite-Element-Method (FEM) has been established as a common tool for the dimensioning of structural parts. Also, short fiber reinforced thermoplastics have been established as structural materials. However, the development of methods for the efficient computation of the deformation and failure behavior of these composite materials is insufficient and in conflict to the common use of short fiber reinforced thermoplastics as a structural material and of FEM as an engineering tool.

In the presented contribution this contrast is in focus of the considerations. The process-related microstructure is analyzed and existing methods for the analytical description are presented. Based on this, two approaches for the elastic-plastic modeling of short fiber reinforced thermoplastics are developed by explicitly taking into account the existing microstructure. Besides the computation of deformation behavior, the computation of failure is of special interest. Therefore, two different dimensioning strategies are presented and are exemplarily applied to structural parts.

The contribution is seen in the context of developing an efficient and reliable, computational method for the simulation of short fiber reinforced thermoplastics. Against this background the developed models and strategies are evaluated by taking into account the effort for calibration and application and the results are summarized in an evaluation scheme.

Lesen Sie die deutsche Zusammenfassung auf Kunststoffe.de
Author
 Jan-Martin Kaiser

Jan-Martin Kaiser
Lehrstuhl für Polymerwerkstoffe
Universität des Saarlandes

Information

Free keywords: Mean-Field-Theory, Homogenization, short fiber reinforced thermoplastics, Finite-Element-Simulation, Mori-Tanaka material model, elasto-plastc material behavior
Institute / chair: Naturwissenschaftlich-Technische Fakultät III Chemie, Pharmazie, Bio- und Werkstoffwissenschaften der Universität des Saarlandes
Language: German
Technical consultant for expert services: Prof. Dr.-Ing. Markus Stommel (Betreuer), Prof. Dr.-Ing. Stefan Diebels
Publication year: 2013
Provider: Wissenschaftlicher Arbeitskreis Kunststofftechnik (WAK) / Kunststoffe.de

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