A Unified Approach to Substructuring and Structural Modification Problems

Substructures coupling is still an important tool in several applications of modal analysis, especially structural modification and structures assembling. The subject is particularly relevant in virtual prototyping of complex systems and responds to actual industrial needs. This paper analyzes the p...

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Main Authors: Walter D’Ambrogio, Aldo Sestieri
Format: Article
Language:English
Published: Wiley 2004-01-01
Series:Shock and Vibration
Online Access:http://dx.doi.org/10.1155/2004/490471
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author Walter D’Ambrogio
Aldo Sestieri
author_facet Walter D’Ambrogio
Aldo Sestieri
author_sort Walter D’Ambrogio
collection DOAJ
description Substructures coupling is still an important tool in several applications of modal analysis, especially structural modification and structures assembling. The subject is particularly relevant in virtual prototyping of complex systems and responds to actual industrial needs. This paper analyzes the possibility of assembling together different substructures' models. The important role of rotational DoFs is highlighted, underlying the difficulty of assembling theoretical and experimental models, for which, usually, the rotational DoFs are not available. Expansion techniques can be used to provide this information as well as appropriate modelling of joints. With this information FRF models, modal models and FE models can be appropriately combined together and solutions for several cases of practical interest are presented. The analyzed procedures are tested on purpose-built benchmarks, showing limits and capabilities of each of them.
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institution Kabale University
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series Shock and Vibration
spelling doaj-art-e25b5cde51214aaba70cc1c4acb2b7ae2025-02-03T01:33:04ZengWileyShock and Vibration1070-96221875-92032004-01-01113-429530910.1155/2004/490471A Unified Approach to Substructuring and Structural Modification ProblemsWalter D’Ambrogio0Aldo Sestieri1Universitè de L’Aquila, Dipartimento di Energetica, Località Monteluco, I-67040 Roio Poggio (AQ), ItalyUniversit di Roma “La Sapienza”, Dipartimento di Meccanica e Aeronautica, Via Eudossiana 18, I-00184 Roma, ItalySubstructures coupling is still an important tool in several applications of modal analysis, especially structural modification and structures assembling. The subject is particularly relevant in virtual prototyping of complex systems and responds to actual industrial needs. This paper analyzes the possibility of assembling together different substructures' models. The important role of rotational DoFs is highlighted, underlying the difficulty of assembling theoretical and experimental models, for which, usually, the rotational DoFs are not available. Expansion techniques can be used to provide this information as well as appropriate modelling of joints. With this information FRF models, modal models and FE models can be appropriately combined together and solutions for several cases of practical interest are presented. The analyzed procedures are tested on purpose-built benchmarks, showing limits and capabilities of each of them.http://dx.doi.org/10.1155/2004/490471
spellingShingle Walter D’Ambrogio
Aldo Sestieri
A Unified Approach to Substructuring and Structural Modification Problems
Shock and Vibration
title A Unified Approach to Substructuring and Structural Modification Problems
title_full A Unified Approach to Substructuring and Structural Modification Problems
title_fullStr A Unified Approach to Substructuring and Structural Modification Problems
title_full_unstemmed A Unified Approach to Substructuring and Structural Modification Problems
title_short A Unified Approach to Substructuring and Structural Modification Problems
title_sort unified approach to substructuring and structural modification problems
url http://dx.doi.org/10.1155/2004/490471
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