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NUMERICAL SIMULATION OF WELDABLE METALLIC FORCE TRANSMISSION POINTS IN FIBRE REINFORCED THERMOPLASTICS (FRTP)
Arne Kunze (Stiftung Institut für Werkstofftechnik) F. Jansen (Faserinstitut Bremen) Axel von Hehl (Stiftung Institut für Werkstofftechnik)
This paper describes the mechanical design and numerical simulation of spot weldable organic sheets – components equipped with so called welding patches – on coupon level. Different geometrics are developed, compared to each other an evaluated.
OPTIMISED THERMOSET MATRIX SYSTEMS FOR THE MANUFACTURING OF SHEET-METAL-FRP-HYBRID-STRUCTURES BY AN OPTIMISED RESIN TRANSFER MOULDING PROCESS
Christian Lauter (University of Paderborn) Bamend Sanitther (University of Paderborn) Zheng Wang (University of Paderborn) Thomas Troester (University of Paderborn)
Hybrid materials are a promising approach for lightweight design. Current research focusses on optimised thermoset resins and resin transfer moulding processes. Due to this efforts, for example cycle times and costs can be reduced effectively.
SIMULATION CHAIN FOR METAL-CFRP SANDWICH MATERIALS IN THE DEVELOPMENT PROCESS OF AN AUTOMOTIVE FLOOR STRUCTURE
Thorolf Schulte (RWTH Aachen Univeristy) Sebastian Wiedemann (inpro Innovationsgesellschaft für fortgeschrittene Produktionssysteme in der Fahrzeugindustrie mbH) Michael Gerkens (University of Paderborn) Christopher Schmal (University of Paderborn) Christian Paul (ThyssenKrupp AG TechCenter Carbon Composites) L. Eckstein (RWTH Aachen Univeristy) Frank Meissen (inpro Innovationsgesellschaft für fortgeschrittene Produktionssysteme in der Fahrzeugindustrie mbH) Gerson Meschut (University of Paderborn)
In this paper simulation models for novel steel-CFRP and magnesium-CFRP sandwich materials with thermoplastic matrix are being presented. The models are used to develop a lightweight automotive floor structure fulfilling various safety requirements.
ANALYSIS OF OUT-OF-PLANE BEHAVIOUR OF BOLTED JOINTS ASSEMBLIES FOR THERMOPLASTIC LAMINATES
Romain Hamonou (Ecole Centrale de Nantes) Laurent Gornet (Institut de Recherche en Génie Civil et Mécanique) Frédéric Jacquemin (Institut de Recherche en Génie Civil et Mécanique) Stéphane Auger (CETIM)
In this paper, an analysis of out-of-plane behavior of bolted joints assemblies for thermoplastic materials is presented.
SURFACE MODIFIED STEEL/EPOXY-BASED CFRP HYBRID LAMINATES UNDER MODE I, MODE II AND MIXED-MODE LOAD CONDITIONS
Andreas Monden (University of Augsburg) Markus Sause (University of Augsburg) Siegfried Horn (University of Augsburg)
CFRP/steel hybrid laminates were investigated to quantify mode I, mode II and mixed-mode fracture toughness via DCB, ENF and MMB tests. Surface treatments applied to the steel surfaces resulted in individual fracture toughness values.
BENDING-TWIST COUPLING MECHANISM BY ELASTIC INSTABILITY: AEROELASTIC STUDY
Falk Runkel (ETH Zürich) U. Fasel (ETH Zürich) G. Molinari (ETH Zürich) Andres F. Arrieta (Purdue University) Paolo Ermanni (ETH Zürich)
We present a purely passive morphing mechanism for wings exploiting local elastic instabilities for continuous twist variations. The influence of various design parameters on the buckling-induced twist is assessed by aeroelastic analysis techniques.
BUCKLING BEHAVIOUR OF PPS/CF LAMINATES STIFFENED BY INDUCTION WELDING
Gennaro Scarselli (Università del Salento) Silvio Pappadà (Consorzio CETMA, Departments of Materials and Structures Engineering) Giuseppe Buccoliero (CETMA) Andrea Salomi (CETMA) Alfonso Maffezzoli (University of Salento)
The buckling and post-buckling behaviour under compression of a thermoplastic stiffened panel, assembled with an induction welding technique, and a L-shaped thermoplastic stringer is analysed experimentally and numerically.
DAMAGE SIMULATIONS IN A COMPOSITE Ω-STIFFENED PANEL IN POSTBUCKLING REGIME
Antonio Bláquez (University of Seville) José Reinoso (University Seville) Federico París (Universidad de Sevilla)
Submodeling global-local technique is used in this work to simulate the initiation and development of skin-stringer debonding of a multi-stringer composite stiffened panel subjected to uniaxial compressive loading.
NUMERICAL INVESTIGATION ON INITIAL POST-BUCKLING BEHAVIOUR OF COMPOSITE THIN-WALLED STRUCTURE
Jiayi Yan (University of Nottingham) Shuguang Li (University of Nottingham) Shihui Duan (Aircraft Strength Research Institute Xi'an City)
(1) The analytical expression of first initial post-buckling coefficient of simply supported curved shell subjected to uniaxial compression is presented. (2) Numerical results show excellent agreements with analytical values.
ON LAY-UP OPTIMIZATION OF ANISOTROPIC COMPOSITE PLATES IN POST-BUCKLING
Sergey Selyugin (Airbus Operations)
The post-buckling stiffness maximization optimality conditions. The conditions consist of two terms, one of them leads to zero twisting moment in principal curvature axes, another one leads to zero shear flow in principal 2D-strain axes.
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