MATLAB computer programs for vibration and control of vibrations transmitted from marine engines. Users manual


  1. Hutton, S.G.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN);Vibe-Tek Research Ltd, Vancouver BC (CAN)
This report provides instructions for using the suite of MATLAB programs that have been developed in order to assist in the optimal vibration design of isolators for marine engines. These programs calculate the vibration transmissibility characteristics of the system and are of value in the design of optimal isolation systems. A program is also developed for the analysis of the active control of transmitted vibrations. The frequency range of interest is that encompassing the natural frequencies of the engine on its support system. The general system that is analysed consists of an engines supported by vibration isolators on a foundation raft that itself is supported to ground by vibration isolators. The programs model the engine as a rigid body. The foundation raft can be modeled as a rigid body, or it can be modeled as a flexible body using beam finite elements. It is assumed that the isolators can be modeled as an isotropic linear viscoelastic material in terms of both a complex Young's modulus and a complex Poisson's Ratio, both of which are frequency dependent. TRUNCATED

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Computer programs (MATLAB);Diesel engine vibration;Engine mounts;Resilient suspension;Vibration isolation;Viscoelasticity;Active vibration control
Report Number
DREA-CR-2000-078 — Contractor Report
Date of publication
01 Jan 2001
Number of Pages
Hardcopy;Document Image stored on Optical Disk

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