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Technical papers

Virtualization Of High Vacuum And High Performance HPDC Machine For Top Quality Casting

OEM and automotive market is driven foundry suppliers to high performance castings: high structural integrity, high mechanical properties, welding and heat treatment. These requirements are typically obtain with... read more

Keywords: HPDC, CASTING SIMULATION SOFTWARE, VACUUM DIE CASTING, DCM, MACHINE

Casting

Numerical Methods For 3D Compressive RTM Simulations

The extensive use of composite materials in automotive structural components with high mechanical requirements is today limited by different concerns such as production rates. The compressive resin transfer molding... read more

Keywords: Compressive RTM, Fluid/Solid coupling, Composites virtual manufacturing, Process simulation

Composites

Modeling of structure-borne underwater radiated noise using a small reference structure

Increased environmental awareness has created the need in commercial shipping, in addition to established military requirements, to understand and manage structure-borne machinery noise radiated to water. Noise... read more

Vibro-Acoustics

Advanced RADAR Sensors Modeling for Driving Assistance Systems Testing

With Advanced Driver Assistance Systems (ADAS) getting always more sophisticated, the related Virtual Prototyp-ing platforms have to propose a very high level of accuracy with improved flexibility regarding vehicles... read more

Keywords: ADAS, RADAR sensors, Virtual Prototyping, Driving Simulators, ESI Pro-SiVIC™ platform

Electromagnetics

Modelling & Validation of Blown Powder in Additive Manufacturing Processes

N. N’Dri, H.-W. Mindt, H. Duan, Y. Vincent, O. Köser, M. Megahed, Blanka Szost, Sofiane Terzi & David John Jarvis, Ludovic Kounde & Thierry Engel, Modelling & Validation of Blown Powder Additive... read more

Keywords: Additive Manufacturing, Blown Powder Processes, Laser Direct Metal Deposition, Melt Pool, Residual Stresses, Distortion, Modelling

Additive Manufacturing

Verification Of Numerically Calculated Cooling Rates Of Powder Bed Additive Manufacturing

H.-W. Mindt, M. Megahed, Verification of Numerically Calculated Cooling Rates of Powder Process Additive Manufacturing, TMS 2016 145th Annual Meeting & Exhibition, Feb. 14-18, 2016, Nashville, Tennessee.... read more

Keywords: Additive Manufacturing, Powder Bed, Direct Metal Laser Melting, Modelling, Verification

Additive Manufacturing

Alternative Solution Algorithms For Primal And Adjoint Incompressible Navier-Stokes

Regardless of the specific discretisation framework, the discrete incompressible Navier-Stokes equations present themselves in the form of a non-linear, saddle-point Oseentype system. Traditional CFD codes typically... read more

Keywords: Oseen Preconditioners, Adjoint Navier-Stokes, Block-Coupled, SIMPLEC, V-Coupled, Augmented Lagrangian.

CFD

Powder Bed Models - Numerical Assessment of As-Built Quality

H.-W. Mindt, Brian Shula, M. Megahed, A. D. Peralta, J. Neumann, Powder Bed Models – Numerical Assessment of As-Built Quality, AIAA 2016-1657, AIAA Science and Technology Forum and Exposition 2016, 4-8 January, 2016... read more

Keywords: Additive Manufacturing, Powder Bed, Direct Metal Laser Melting, Modelling, Verification

Additive Manufacturing

DMLS Process Modelling & Validation

N. N’Dri, H.-W. Mindt, B. Shula, M. Megahed, A. Peralta, P. Kantzos and J. Neumann, DMLS Process Modelling & Validation, TMS 2015 144th Annual Meeting & Exhibition, March 15-19, 2015, Orlando, FL. Proceedings... read more

Keywords: Selective Laser Sintering, Direct Metal Laser Sintering, Modelling, Melt Pool, Residual stress, Distortion

Additive Manufacturing

Powder Bed Process Modelling & Validation

N. N’Dri, H.-W. Mindt, B. Shula, M. Megahed, A. Peralta, P. Kantzos and J. Neumann, DMLS Process Modelling & Validation, TMS 2015 144th Annual Meeting & Exhibition, March 15-19, 2015, Orlando, FL. Proceedings... read more

Additive Manufacturing

Metal additive-manufacturing process and residual stress modeling

M. Megahed, H.-W. Mindt, N. N’Dri, H.-Z. Duan and O. Desmaison, Metal Additive Manufacturing Process and Residual Stress Modelling, Integrating Materials and Manufacturing Innovation, 2016, 5:4. DOI: 10.1186/s40192-... read more

Keywords: Metal additive manufacturing, Powder bed, Blown powder, Wire feed, Process modeling, As-built porosity, Residual stress, Distortion, Multi-scale modeling, Multi-physics modeling, ICME

Additive Manufacturing

A Coupled Approach To Weld Pool, Phase And Residual Stress Modelling Of Laser Direct Metal Deposition (LDMD) Processes

M. Vogel, M. Khan, J. Ibara-Medina, A. Pinkerton, N. N’Dri and M. Megahed, A Coupled Approach to Weld Pool, Phase and Residual Stress Modelling of Laser Direct Metal Deposition (LDMD) Processes, 2nd World Congress on... read more

Keywords: Laser Cladding, melt pool modeling, CFD/FEM coupling

Additive Manufacturing

Why measure permeability?

Permeability is one of a reinforcement’s intrinsic properties that must be controlled during the manufacture of a part made of a composite material. This property can be illustrated as the average cross section of... read more

Composites

Optimization study on a car crash model of 20 million finite elements

From March 2013 to March 2014 Renault and ESI France worked on the FMOC project (Fast Multi-physics Optimization of a Car) on the PRACE facilities. The focus is on the frontal car crash. The car crash model is... read more

Keywords: Finite Element, Optimization

Virtual Performance Solution

A hybrid Finite Element-Transfer Matrix method for the modeling of vibroacoustic systems with attached noise control treatment

This paper is concerned with the development of a hybrid methodology to speed up finite element analysis in vibroacoustic applications. The approach aims at avoiding the finite element modeling of the noise control... read more

Vibro-Acoustics

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