Seminar 12th February 2015 2 p.m. B176, Room 2013 - Boldrewood Campus, University of Southampton
Predicting the performance of uncertain systems with application to vibro-acoustics and electromagnetics
Professor Robin Langley
Cambridge University
- Categories
- NGCM
- Submitter
- Luke Goater
Prof Robin Langley
We are very pleased to invite Professor Robin Langley, Head of the Division of Mechanics, Materials and Design, in the Cambridge University Engineering Department to deliver invited seminar on “Predicting the performance of uncertain systems with application to vibro-acoustics and electromagnetics” in the coming Thursday Feb 12th.
Professor Langley will address computational methods for the analysis of built-up systems with uncertain or random properties. It covers the inclusion of non-parametric statistics and variance prediction, the coupling of SEA to the finite element method, the analysis of the combined effect of parametric and non-parametric uncertainty, and the prediction of performance limits with various industrial examples.
Abstract
This talk will review computational methods for the analysis of built-up systems that have very many degrees of freedom, and which have uncertain or random properties. The aim is to predict not only the nominal performance of the system, but also the statistical distribution of the performance over an ensemble of random systems. A key element of the talk will be Statistical Energy Analysis (SEA), a technique that was championed at Southampton for many years by researchers such as Fahy, Lalor, Pinnington, Keane, Price, and Mace. Various extensions to this approach will be discussed including: the inclusion of non-parametric statistics and variance prediction, the coupling of SEA to the finite element method, the analysis of the combined effect of parametric and non-parametric uncertainty, and the prediction of performance limits.
Various industrial examples will illustrate the application of the method to aeronautical and automotive systems, and to electromagnetic compatibility (where the concern is with electromagnetic waves and Maxwell's equations).
Biography
Robin Langley is Professor of Mechanical Engineering and Head of the Division of Mechanics, Materials and Design, in the Cambridge University Engineering Department. He has previously held academic positions at Cranfield and Southampton (Department of Aeronautics and Astronautics, 1991-1998), and he acts as a consultant to industry: previously with ESI on the development of the software package VA One, and most recently with Wavesix LLC on vibro-acoustics and electromagnetics.