Observing Material Properties in Composite Structures from Actual Rotations
The shear deflection effects are traditionally neglected in most structural system identification methods. Unfortunately, this assumption might lead to significant errors in some structures, like deep beams. Although some inverse analysis methods based on the stiffness matrix method, including shear...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-10-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/13/20/11456 |
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| author | Seyyedbehrad Emadi Yuan Sun Jose A. Lozano-Galant Jose Turmo |
| author_facet | Seyyedbehrad Emadi Yuan Sun Jose A. Lozano-Galant Jose Turmo |
| author_sort | Seyyedbehrad Emadi |
| collection | DOAJ |
| description | The shear deflection effects are traditionally neglected in most structural system identification methods. Unfortunately, this assumption might lead to significant errors in some structures, like deep beams. Although some inverse analysis methods based on the stiffness matrix method, including shear deformation effects, have been presented in the literature, none of these methods are able to deal with actual rotations in their formulations. Recently, the observability techniques, one of the first methods for the inverse analysis of structures, included the shear effects into the system of equations. In this approach, the effects of the shear rotation are neglected. When actual rotations on-site are used to estimate the mechanical properties in the inverse analysis, it can result in serious errors in the observed properties. This characteristic might be especially problematic in structures such as deep beams where only rotations can be measured. To solve this problem and increase the observability techniques’ applicability, this paper proposes a new approach to include the shear rotations into the inverse analysis by observability techniques. This modification is based on the introduction of a new iterative process. To illustrate the applicability and potential of the proposed method, the inverse analysis of several examples of growing complexity is presented. |
| first_indexed | 2024-03-10T21:28:50Z |
| format | Article |
| id | doaj.art-ded55d19793246bb900beec0dd1f1774 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T21:28:50Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
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| spelling | doaj.art-ded55d19793246bb900beec0dd1f17742023-11-19T15:32:27ZengMDPI AGApplied Sciences2076-34172023-10-0113201145610.3390/app132011456Observing Material Properties in Composite Structures from Actual RotationsSeyyedbehrad Emadi0Yuan Sun1Jose A. Lozano-Galant2Jose Turmo3Department of Civil and Environmental Engineering, Universitat Politècnica de Catalunya BarcelonaTECH, 08034 Barcelona, SpainSchool of Civil and Hydraulic Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaDepartment of Civil Engineering, University of Castilla-La Mancha, 13001 Ciudad Real, SpainDepartment of Civil and Environmental Engineering, Universitat Politècnica de Catalunya BarcelonaTECH, 08034 Barcelona, SpainThe shear deflection effects are traditionally neglected in most structural system identification methods. Unfortunately, this assumption might lead to significant errors in some structures, like deep beams. Although some inverse analysis methods based on the stiffness matrix method, including shear deformation effects, have been presented in the literature, none of these methods are able to deal with actual rotations in their formulations. Recently, the observability techniques, one of the first methods for the inverse analysis of structures, included the shear effects into the system of equations. In this approach, the effects of the shear rotation are neglected. When actual rotations on-site are used to estimate the mechanical properties in the inverse analysis, it can result in serious errors in the observed properties. This characteristic might be especially problematic in structures such as deep beams where only rotations can be measured. To solve this problem and increase the observability techniques’ applicability, this paper proposes a new approach to include the shear rotations into the inverse analysis by observability techniques. This modification is based on the introduction of a new iterative process. To illustrate the applicability and potential of the proposed method, the inverse analysis of several examples of growing complexity is presented.https://www.mdpi.com/2076-3417/13/20/11456composite structuresobservability methodshear rotationstiffness matrix methodstructural system identification |
| spellingShingle | Seyyedbehrad Emadi Yuan Sun Jose A. Lozano-Galant Jose Turmo Observing Material Properties in Composite Structures from Actual Rotations Applied Sciences composite structures observability method shear rotation stiffness matrix method structural system identification |
| title | Observing Material Properties in Composite Structures from Actual Rotations |
| title_full | Observing Material Properties in Composite Structures from Actual Rotations |
| title_fullStr | Observing Material Properties in Composite Structures from Actual Rotations |
| title_full_unstemmed | Observing Material Properties in Composite Structures from Actual Rotations |
| title_short | Observing Material Properties in Composite Structures from Actual Rotations |
| title_sort | observing material properties in composite structures from actual rotations |
| topic | composite structures observability method shear rotation stiffness matrix method structural system identification |
| url | https://www.mdpi.com/2076-3417/13/20/11456 |
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