Acoustic design of Trains and Tracks
Get your school year off to a good start – with some professional training !
ASME Pressure Vessels and Piping (PVP2018) Conference – VibraTec to publish our technical developments
Bayesian focalisation applied to wind tunnels – AIAA/CEAS conference Atlanta
ISNVH Congress in Graz Austria: June 20th – 22nd, 2018
Customized asset management and monitoring solutions: learn about at Achema, from 11th to 15th of June 2018
2018 Vibratec China Activities
Piping Vibration Training Kuala Lumpur on 16th Jul 2018
VibraTec at the ENOVA Toulouse event on the 30th and 31st of May 2018
Vibratec awarded by the CLEANSKY 2 to develop an instrumented engine cradle for the turboprop demonstrator ground test with SAFRAN Helicopters Engines
LUG2 project at NOVEM 2018
Managing MEMs microphone calibration – MicrodB will share its findings at the 14th French Acoustic Congress in Le Havre from April 23rd to 27th.
Come and meet VibraTec at TRA 2018
Comprehensive innovative monitoring solutions to be presented at ACHEMA
VibraTec very first railway seminar in Malaysia !
The JASA (Journal of the Acoustical Society of America) chooses MicrodB as the latest Technical Area Pick in Signal Processing
Why wait to schedule your 2018 training programs ?
VibraTec’s training programs referenced by DataDock
VibraTec – tackling railway measurement & simulation issues for more than 30 years !
Controlling joints to improve railway infrastructure reliability
Dynamic response: a pertinent indication of structural mechanical reliability
VibraTec Asia Pacific to be part of Rail Solutions Asia 2017
COnnected MAintenance using VIbration measurements
Software for Railway Ground Borne Vibration Prediction
GroundVIB is a dedicated software package for predicting ground borne noise and vibration levels for railway systems. Its user friendly interface enables the computation of sources of vibration excitation that is then transmitted to the ground. The train and track models are coupled to the excitation. The excitation could be a roughness spectra (which represents the quality of the rail and wheel rolling surface), a singularity (such as a rail joint, or a wheel flat) or a parametric excitation (related to the discontinuous supports of the rail). GroundVib software is part of the global methodology developed and validated by VibraTec to work with, and understand ground borne and structure borne noise and vibration issues.
- Train speed
- Building distances
- Soil decay rate or soil type
Database (evolutive) :
- Wheel – rail roughness
- Soil decay rates
- Building transfer functions
Vibration level (Lv, eVDV, …) :
- Track component
- Building threshold
- Inside building
References : London (Crossrail), Firenze, Paris, Constantine, Alger, Lyon, Orléans, Toulouse, Bordeaux, Grenoble, Grand Paris Express,…
Software for Railway Rolling Noise Prediction
STARDAMP is a modelling tool that standardises damping techniques for the reduction of railway rolling noise. The software implements an analytical description of the interaction between wheel and track. Wheel, rail and sleeper responses are calculated and the sound power levels estimated through radiation efficiencies
- Direct assessment of Wheel and Rail dampers
- Simplified Graphical User Interface with predefined input parameters for Easy and Quick handling
- Possibility to enter user-defined parameters for expert users
- Track decay rate measurements (Laboratory testing)
- Wheel FE model
- Wheel damping measurements (Laboratory testing)
- SPL at 7.5 m or 25 m
- Sound power Spectra , octave or 1/3rd octave bands
- A-weighted overall levels
- Wheel and track contributions
Design of Acoustic shields
SonorSoft is a software package that simulates acoustic propagation in the mid to high frequency range in order to optimize acoustic environments, particularly in the vehicle industries. This global process allows for the optimal design of acoustic shields with the following characteristics :
- Experimental characterization of source radiation
- Acoustic material characterization
- Modelling of the source in its environment: SONOR software
- Numerical optimization of the acoustic shields
- Design and manufacturing of acoustic shields
- Acoustic shields for vehicle exterior noise (Automotive, Truck, Railway)
- Machinery noise
- Adherence to pass-by noise regulations
- Acoustic comfort inside vehicles
SONOR Software :
- Boundary Energy Element Method (BEEM) for medium to high frequencies ([500-5000] Hz)
- Fast and robust,
- Adapted for calculation of multi-load cases
Vibrabench, test benches by Vibratec, offers you turnkey test bench services to assist you with your product assessment. From design to product validation, VibraBench will assist you through your complete product development cycle with :
- characterization test benches
- performance/endurance test benches
- End of production line test benches
- Determination of the optimal concept to characterize and validate your product
- Mechanical design of the test bench
- Development of the test bench automation and acquisition chain
- Delivery of the equipment
- Execution of the test
- Analysis of the measured physical parameters
Vibro-acoustics of gear transmission
Consultancy services providing a full methodology for new design predictions or troubleshooting of existing designs to understand and remediate the correlation between gearbox casing dynamic behaviour and pinion specification (transmission error, micro & macro geometry) for whine, rattle and hammer over a range of torques. Our methodology represents complete gearbox and driveline dynamic behaviour and their application to structural reliability and noise.
Applications : spur and helical gears, epicycle gears, multi-stage gearboxes
Software features : specific frequency solver, fast computation.
Teeth microgeometry and housing optimization to reduce radiated noise
Electromagnetic related Noise, Vibration and Structural Dynamics
Combining an electromagnetic simulation with a unique mapping tool to create 3D dynamic simulations of your electric machine, VibraVolt produces an acoustic simulation of your system which allows fundamental refinements to be applied and resolves acoustic or vibratory issues at their source. VibraVolt is able to provide a complete and powerful virtual design process for the optimization of the electromagnetic, mechanical, or NVH performance of your electric machine including PWM (Pulse Width Modulation).
Features : coupling between state of the art Electromagnetic simulation software (FLUX, MAXWELL) and Structural Dynamic software (NASTRAN)
Technicians - we are recruiting !
If you are a noise &/or vibration specialist, this could be the perfect occasion to enrich your experience: our group, well-known for its expertise in acoustics and structural dynamics, works on very diversified projects.