Technical papers

High Speed Reactive RTM process simulation for automotive structural parts
High speed Reactive Resin Transfer Moulding (RTM) is a promising process for the mass production of structural composite parts in the automotive industry. In this technology a low viscosity reactive thermosetting or…
Composites
A robust spot weld model for structural vibration analysis
A finite element spot weld is proposed. The model is only weakly sensitive to element size, in contrast to some existing models, for which predictions of the static and dynamic responses can be strongly sensitive to the…
Vibro-Acoustics finite element analysis, spot weld, sensitivity, structural dynamics, robustness
Fully trimmed vehicle models with poroelastic finite element method, modelling technics
The automotive industry is currently expressing a strong need to understand more into details the influence of the trim parts on the acoustic response in the vehicle in the case of structureborne or airborne excitations…
Vibro-Acoustics
Grain Structure Prediction
The control of grain structure, which develops during solidification processes in investment casting of nozzle guide vanes (NGVs), is a key issue for optimization of their mechanical properties. The main objective of…
Casting Ni-based superalloys, investment casting, nozzle guide vanes, modelling, cellular automata - finite element (CAFE) module, grain structure
Thermal calibration and porosity prediction
Investment casting is the only commercially used technique for fabrication of nozzle guide vanes (NGVs), which are one of the most important structural parts of gas turbines. Manufacturing of NGVs has always been a…
Casting Ni-based superalloys, investment casting, nozzle guide vanes, thermal model, thermal history, porosity
Conversion of a Vacuum-Assist Casting to a Conventionally Vented Casting with Casting Simulation
In the current competitive environment, the capability to produce high quality die casting components whilst reducing production cost and development times is a challenge the foundry industry must face up to. Whether it…
Casting
3D robust iterative coupling of Stokes, Darcy and solid mechanics
Stokes, Darcy and solid mechanics coupling is a matter of interest in many domains of engineering such as soil mechanics, bio-mechanics, and composites. The aim of this paper is to present a robust iterative method to…
Composites Stokes-Darcy coupled problem, fluid-solid interaction, iterative coupling, P1+/P1, Manufactured Exact Solution Method, composites
Manufacturing induced distortions of automotive composite parts
One of the biggest challenges for designers and manufacturers of composites-parts nowadays is to ensure that designed parts can be produced within tolerance that will cause no issue at the assembly stage. This paper…
Composites Composites manufacturing simulation chain, geometrical distortions, Product/Process design
Numerical Coupling Models for Complex Systems and Results
The paper gives a status of present electromagnetic (EM) coupling modeling capabilities. Starting from topologically designed systems, it shows how formal rules of the EM topology approach can provide guidance for EM…
Electromagnetics electromagnetic compatibility (EMC), electro- magnetic topology, numerical modeling
Analysis of 24GHz Vehicle Radar Performance with MAZDA
From the standpoint of vehicle appearance, vehicle radar units should be located behind plastic bumpers. Plastic bumpers are made of dielectric material, which causes reflection, scattering, refraction, and diffraction…
Electromagnetics