Technical papers

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.…
Virtual Performance
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-…
Virtual Performance Metal additive manufacturing, Powder bed, Blown powder, Wire feed, Process modeling, As-built porosity, Residual stress, Distortion, Multi-scale modeling, Multi-physics modeling, ICME
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…
Virtual Performance Laser Cladding, melt pool modeling, CFD/FEM coupling
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 the…
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 growing…
Virtual Performance Finite Element, Optimization
SEA Modeling And Validation Of A Truck Cab For Sound Package Optimization
Consumers and regulations drive the noise requirements to levels constantly decreasing. For vehicles, noise control strategies include the application of noise control treatments on the vibrating panels. The definition…
Vibro-Acoustics
Wind Noise Contribution to Vehicle Interior SPL
Recent developments in the prediction of the contribution of wind noise to the interior SPL (Sound Pressure Level) have opened a realm of new possibilities. The main physical mechanisms related to noise generation…
Vibro-Acoustics
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…
Vibro-Acoustics
Using CFD flow fields to inform acoustic finite element models of complex mufflers with thermal and flow effects
Many actual muffler systems with complex geometry have large temperature variations and large variations in the flow field under normal operating conditions. Often perforated regions and other complex design elements…
CFD, Vibro-Acoustics CFD flow, complex mufflers, thermal and flow effects, CFD VA coupling
Low Transformation Temperature Welding Consumables For Residual Stress Management: Consumables Development And Testing Qualification
Residual stresses induced during joining are major contributors to the overall stresses in the vicinity of structural weld joints. Undesirable tensile residual stress is observed in low-carbon structural steel weld…
Welding & Assembly Low-Transformation-Temperature Welding Consumables, Martensitic Transformation, Phase-Induced Volumetric Expansion, Residual Stress Management, Compressive Residual Stress, Fatigue Strength, Microstructures, Microhardness