University of Hertfordshire

By the same authors

Load reconstruction on a missile structure using the Pseudo-Inverse methods

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Original languageEnglish
Title of host publicationProcs 2010 International Conference on Modelling, Identification and Control, ICMIC 2010
PublisherIEEE
Pages100-105
Number of pages6
ISBN (Print)978-095552933-7
Publication statusPublished - 1 Jan 2010
EventModelling, Identification and Control (ICMIC), The 2010 International Conference on - Okayama, Japan
Duration: 17 Jul 201019 Jul 2010

Conference

ConferenceModelling, Identification and Control (ICMIC), The 2010 International Conference on
CountryJapan
CityOkayama
Period17/07/1019/07/10

Abstract

A missile during air carriage is subjected to high vibratory forces. These forces consequently impose high levels of stress on the attachment points to the aircraft A repetitive application of stress causes fatigue. However, since the vibratory forces cannot be measured directly at the interface, an inverse method utilizing missile accelerometer data has been used to determine the forces. This paper presents two techniques of reconstructing loads. Both techniques utilize a frequency domain method and the Pseudo-Inverse method, although the second procedure incorporating a normal modes analysis is perhaps better suited for embedding within a Health and Usage Monitoring System (HUMS). Both methodologies enable discrete dynamic loads, which are applied to a finite element model in the time domain, to be successfully reconstructed. Consequently, by identifying forces on a missile structure successfully, the presented methodologies enable a better structural integrity assessment to be undertaken.

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