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Bücher Englische Bücher Wissen & Bildung Naturwissenschaft, Medizin, Informatik, Technik Technik Maschinenbau & Fertigungstechnik Crash Simulation of Woven Fabric Thermoplastic Composites
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Crash Simulation of Woven Fabric Thermoplastic Composites
Bilal Ahmad (Broschiert, Englisch)
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Optischer Zustand
Beschreibung
Fiber composite materials are frequently being used in automotive industry to meet the growing demand for fuel efficient passenger cars. Woven fabric thermoplastic composites materials provide high stiffness-to-weight, strength-to-weight and energy absorption-to-weight ratio at affordable mass production cost.
To use these materials in structural components of passenger cars, the crashworthiness… requirements must be met. To fulfill the crashworthiness requirements, dynamic FEM simulations are carried out as part of the product development process. However, the composite material behavior under dynamics loads is not fully understood. Furthermore, the state-of-the-art material models fail to predict the crash behavior of woven fabric composite material accurately which leads to under-utilization of the weight-saving-potential of these materials.
The goal of this work was to develop an improved material model for the dynamics simulation of woven fabric thermoplastic composites. The material model must be independent of non-physical parameters and all parameters could be determined experimentally.
In the framework of this work, the mechanical material properties were measured experimentally. The test data was used to identify discrepancies in state-of-the-art continuum damage mechanics material models. The in-plane shear damage behavior was improved and effects of tensile and compression strain on the shear behavior were quantified. High-speed test data was used to incorporate the strain rate-dependency in material model. The improved material model was implemented as user-material subroutine and simulation results were validated with component level drop tower crash tests.
The potential for further improvements was identified by proposing the method to implement the measured size effect on the strength of materials. Stress-strain transformation was used to determine the failure points under multiaxial stress state. Finally, the viability of cohesive zone modeling approach was investigated to model the quasi-static axial crushing. Dieses Produkt haben wir gerade leider nicht auf Lager.
Handgeprüfte Gebrauchtware
Bis zu 50 % günstiger als neu
Der Umwelt zuliebe
Technische Daten
Erscheinungsdatum
15.12.2021
Sprache
Englisch
EAN
9783961821082
Herausgeber
universi - Universitätsverlag Siegen
Serien- oder Bandtitel
Siegener Schriftenreihe Automobiltechnik
Sonderedition
Nein
Autor
Bilal Ahmad
Seitenanzahl
172
Einbandart
Broschiert
Einbandart Details
Kartoniert
-.-
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