Spring VAC Meeting




May 15-16, 2014
Caterpillar Visitors Center
110 SW Washington St.
Peoria, IL, 61602

Website: http://www.caterpillar.com/en/company/visitors-center.html

Directions and Hotel Information


May 15, 2014


8:00 a.m. Coffee, Pastries, and Introductions


8:30 a.m. NVH Simulation Workshop


·         Tutorial Design for Low Noise

·         NVH Simulation Case Studies

o    ESI Group

o    LMS International

o    Free Field Technologies

·         Breakout Sessions

o    What are the limits of NVH simulation?

o    How is simulation currently applied?

o    What are the opportunities for the future?

o    What investment should be made in simulation and measurement tools?


12:00 p.m. Lunch


1:00 p.m. Afternoon Presentations


·         Tutorial Muffler Design

·         Measurement of Source Impedance on a Diesel Engine

·         Methods for Measuring the Bulk Properties of Fiber and Foam Absorbers

·         Development of a Mount Testing Rig and Preliminary Results

·         Modeling the Termination Impedance of Ducts using the Automatically Matched Layer

·         Modeling HVAC Ducts using a Substructuring Approach

·         Determining Transmission Loss above the Plane Wave Cutoff Frequency using BEM and FEM


4:30 p.m. Adjourn


May 16, 2014


8:30 a.m. Coffee, Pastries, and Introductions


9:00 a.m. Morning Presentations


·         Tutorial Effective Implementation of MPP Absorbers

·         Patch Contribution Analysis on a Motorcycle Engine

·         Using Simulation to Determine the Properties of Mounts

·         An Improved Two-Load Approach for Determining Muffler Transmission Loss

·         Modeling Perforates in Mufflers using Plane Wave Models

·         Determining the Effect of Covers and Adhesives between Layered Absorbers

·         Effect of Reverberation Wall Thickness on Panel Transmission Loss Measurements

·         Sound Pressure Level Measurements using Smartphones and Tablets


12:00 p.m. Lunch


1:00 p.m. Tour of the Caterpillar Visitor’s Center



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