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Experimental identification of dynamic characteristics of welded stiffened structures based on model updating
https://orcid.org/0000-0002-1915-4822
https://orcid.org/0000-0002-3015-9667
https://orcid.org/0000-0002-4369-7851
Abstract Complex engineering systems are generally manufactured using joints. This paper proposes a methodology for accurately identifying the stiffness and damping properties of welded stiffened plates. The results of the substructure based finite element models are compared with the actual experimental data. Discrepancies have been observed between the finite element and experimental results. Eigensensitivity studies have been carried out to select the updating parameters. The stiffness and viscous damping properties of the stiffened plate are identified using model updating. The accuracy of the proposed methodology has been validated by matching the predicted finite element FRF with the experimental FRF.
Highlights Fabricate a welded stiffened structure and develop a Finite element model for the system. Carry out experimental modal analysis on the structure. Stiffened welded structure modelled as two substructures of beam and plate coupled using discrete springs and dampers. Identify the coupling joint stiffness using IESM-based model updating. Identify the damping characteristics of the system using experimental modal testing results of the subsystem and the assembly.
Experimental identification of dynamic characteristics of welded stiffened structures based on model updating
https://orcid.org/0000-0002-1915-4822
https://orcid.org/0000-0002-3015-9667
https://orcid.org/0000-0002-4369-7851
Abstract Complex engineering systems are generally manufactured using joints. This paper proposes a methodology for accurately identifying the stiffness and damping properties of welded stiffened plates. The results of the substructure based finite element models are compared with the actual experimental data. Discrepancies have been observed between the finite element and experimental results. Eigensensitivity studies have been carried out to select the updating parameters. The stiffness and viscous damping properties of the stiffened plate are identified using model updating. The accuracy of the proposed methodology has been validated by matching the predicted finite element FRF with the experimental FRF.
Highlights Fabricate a welded stiffened structure and develop a Finite element model for the system. Carry out experimental modal analysis on the structure. Stiffened welded structure modelled as two substructures of beam and plate coupled using discrete springs and dampers. Identify the coupling joint stiffness using IESM-based model updating. Identify the damping characteristics of the system using experimental modal testing results of the subsystem and the assembly.
Experimental identification of dynamic characteristics of welded stiffened structures based on model updating
https://orcid.org/0000-0002-1915-4822
https://orcid.org/0000-0002-3015-9667
https://orcid.org/0000-0002-4369-7851
Abstract Complex engineering systems are generally manufactured using joints. This paper proposes a methodology for accurately identifying the stiffness and damping properties of welded stiffened plates. The results of the substructure based finite element models are compared with the actual experimental data. Discrepancies have been observed between the finite element and experimental results. Eigensensitivity studies have been carried out to select the updating parameters. The stiffness and viscous damping properties of the stiffened plate are identified using model updating. The accuracy of the proposed methodology has been validated by matching the predicted finite element FRF with the experimental FRF.
Highlights Fabricate a welded stiffened structure and develop a Finite element model for the system. Carry out experimental modal analysis on the structure. Stiffened welded structure modelled as two substructures of beam and plate coupled using discrete springs and dampers. Identify the coupling joint stiffness using IESM-based model updating. Identify the damping characteristics of the system using experimental modal testing results of the subsystem and the assembly.
Experimental identification of dynamic characteristics of welded stiffened structures based on model updating
Shrivastava, Kshitij (author) / Vijayan, Kiran (author) / Arora, Vikas (author)
Thin-Walled Structures ; 184
2022-12-17
Article (Journal)
Electronic Resource
English
Ultimate strength and ductility characteristics of intermittently welded stiffened plates
| Online Contents | 2009
Ultimate strength and ductility characteristics of intermittently welded stiffened plates
| Online Contents | 2009