Noise

What's that Car Noise? New SIMULIA Tech Brief Available: NVH Analysis with Rolling Tires

Submitted by matt.ladzinski on Thu, 07/14/2011 - 21:00

education

The sources of noise in a vehicle are many, including the engine, driveline, tire contact patch and road surface, brakes, and wind to name a few. A Noise, Vibration, and Harshness (NVH) engineer is tasked with predicting these noises early in the design phase to make the necessary adjustments to ensure a harmonic ride, so to speak. The latest SIMULIA Tech Brief illustrates the effects that rolling tires have in contributing to NVH.

How to deal with noisy data in a mesh free Galerkin method

Submitted by Micah Paul on Mon, 05/23/2011 - 18:03

Forums

Computational Mechanics Forum

Choose a channel featured in the header of iMechanica

research

Free Tags

fluid mechanics

computational mechanics

Element-free Galerkin method

PTV

natural neighbor

I'm currently working with a particle tracking velocimetry method, specifically trying to extract shear and vorticity data from the non-gridded velocity results. Of several methods used, the most efficient and accurate was based on a non-Sibsonian element free method. Unlike a more typical Galerkin problem which finds displacements by solving a PDE, this method uses the displacements of natural neighbors to find local flow gradients.