Home: Structural Dynamics @UW-Madison

Structural vibration is the key to engineering aircraft so that their wings and other structures can survive high speed flight, or spacecraft that can survive the shaky ride to space.  It is also responsible for the noise you hear when driving down the freeway in a cheap car, or the quiet and smoothness of a luxury car.  Our research group works at the boundary between experimental and analytical structural dynamics.  Our current projects are involved with characterizing, modeling and testing nonlinear dynamic systems.  We are also interested in novel systems such as micro- or nano-scale devices (e.g. devices measured in millionths or billionths of a meter) and also dynamic motion of the human body.

Past projects have focused on identifying models for dynamic systems from measured response data, on developing more robust methods for predicting the response of assemblies structures in the presence of uncertainties, and novel ways of using lasers to measure a structure’s response.  A few past projects are highlighted below.

Selected Research Highlights

AFOSR Research on Nonlinear Dynamics of Hypersonic Vehicles

Allen was Awarded an  AFOSR Young Investigator award to study nonlinear vibration of assemblies of subcomponents.  The project aims to facilitate design of hypersonic vehicle skin panels. (click here to read press release)

Schematic Hypersonic Panel

National Science Foundation Funded Project on Linear Time Periodic Systems

Allen & Sracic create a new continuous-scan laser vibrometry method that can reduce test time by orders of magnitude (click on image below for more information).

CSLDV Story Thumbnail

Dr. Allen’s Doctoral Research on Structural Health Monitoring for a Highway Bridge

Impulse Response of Z24 Highway Bridge

Impulse response of Swiss Highway Bridge (click on animation above for more information)