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Technical papers

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... read more

Keywords: finite element analysis, spot weld, sensitivity, structural dynamics, robustness

Vibro-Acoustics

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... read more

Vibro-Acoustics

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... read more

Keywords: Ni-based superalloys, investment casting, nozzle guide vanes, thermal model, thermal history, porosity

Casting

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... read more

Keywords: Ni-based superalloys, investment casting, nozzle guide vanes, modelling, cellular automata - finite element (CAFE) module, grain structure

Casting

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... read more

Casting

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... read more

Keywords: electromagnetic compatibility (EMC), electro- magnetic topology, numerical modeling

Electromagnetics

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... read more

Keywords: Composites manufacturing simulation chain, geometrical distortions, Product/Process design

Composites

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... read more

Keywords: Stokes-Darcy coupled problem, fluid-solid interaction, iterative coupling, P1+/P1, Manufactured Exact Solution Method, composites

Composites

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... read more

Electromagnetics

Electromagnetic Field Vulnerability of Complex System

In complex systems like ships or airplanes many tasks vital to the function of the system are executed by electronic equipment. Earlier research Camp (2004)– Nitsch (2005) has shown that there are frequency ranges in... read more

Electromagnetics

Simulating the Electromagnetic Susceptibility of Automotive Vehicles in collaboration with RENAULT

The tremendous increase in the use of electronic devices in the automotive sector is leading to hard-to-manage EMC situations. The Joint Study presented in this paper is demonstrating the ability of Numerical EMC to... read more

Electromagnetics

Numerical simulation and experimental validation of guided ditching tests

The oblique water entry of structures with high horizontal speed is investigated in this work. First, the necessity of aircraft ditching analysis as well as the requirements for numerical tools to simulate aircraft... read more

Keywords: Guided Ditching, Fluid-structure interaction, High speed water impact, Experimental methods, Computational modeling, Smoothed Particle Hydrodynamics

Virtual Performance Solution

Lifetime Extension of Ingot Casting Molds

Due to high thermal loads subjected on the mold during casting process, cracks appear after a limited number of casting cycles. This article provides an overview of influence factors, as well as measures to increase... read more

Keywords: ingot casting, casting simulation, stress simulation, residual stress, micro-structure, mold failure, cracks

Casting

Integration of Coupled Casting and Structure Simulation for Magnesium Die Castings

Simulation is an important tool in the different phases during development. It is used in the early, purely virtual development phase as well as in later production and final test phases, respectively, to analyse and... read more

Casting

Process Chaining Approach With Simulation: From Cast Ingot To Final Properties Of Forged Component

The aim of this study is to evaluate, through FEM software simulation, the quality and properties that can be achieved on a forged component, taking into account results of casting process used to produce ingot . In... read more

Keywords: Ingot Casting Simulation, Forging Simulation, Software, DEFORM, ProCAST

Casting

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