Optimal Fuzzy and Dynamics Design of Ecological Sandwich Panel Vessel Roofs
In this study the basic engineering principles, goals, and constraints are all combined with fuzzy methodology and applied to optimally design sandwich panel circular plate roofs for large vessels loaded statically and dynamically. These panels are made up of two stiff, strong veneer skins separated...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Wiley
2011-01-01
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| Series: | Advances in Fuzzy Systems |
| Online Access: | http://dx.doi.org/10.1155/2011/879049 |
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| _version_ | 1850105701181947904 |
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| author | Heikki Martikka Erkki Taitokari |
| author_facet | Heikki Martikka Erkki Taitokari |
| author_sort | Heikki Martikka |
| collection | DOAJ |
| description | In this study the basic engineering principles, goals, and constraints are all combined with fuzzy methodology and applied to optimally design sandwich panel circular plate roofs for large vessels loaded statically and dynamically. These panels are made up of two stiff, strong veneer skins separated by vertical and peripheral stiffener plates. Advantages are high strength, lightweight, and sustainability. In the present approach, first the goals and constraints of the end user are identified and expressed as decision variables which are formulated using the engineering variables for materials, geometry, and function. Then same consistent fuzzy satisfaction functions are formed over the desired ranges to suit the customer's desires. The risk of extreme dynamic loadings exciting resonance is studied by natural frequency and mode analysis by FEM and analytical models. The results show the most critical locations and give guidelines for innovative remedies of the concept before detailed FEM analyses to finalize the design. |
| format | Article |
| id | doaj-art-38b9cf339fab4bdfb96487c7686819f7 |
| institution | OA Journals |
| issn | 1687-7101 1687-711X |
| language | English |
| publishDate | 2011-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Fuzzy Systems |
| spelling | doaj-art-38b9cf339fab4bdfb96487c7686819f72025-08-20T02:38:59ZengWileyAdvances in Fuzzy Systems1687-71011687-711X2011-01-01201110.1155/2011/879049879049Optimal Fuzzy and Dynamics Design of Ecological Sandwich Panel Vessel RoofsHeikki Martikka0Erkki Taitokari1Himtech Oy, Ollintie 4, 54100 Joutseno, FinlandOy Scanfibre Ltd., Liisankatu 26, 55100 Imatra, FinlandIn this study the basic engineering principles, goals, and constraints are all combined with fuzzy methodology and applied to optimally design sandwich panel circular plate roofs for large vessels loaded statically and dynamically. These panels are made up of two stiff, strong veneer skins separated by vertical and peripheral stiffener plates. Advantages are high strength, lightweight, and sustainability. In the present approach, first the goals and constraints of the end user are identified and expressed as decision variables which are formulated using the engineering variables for materials, geometry, and function. Then same consistent fuzzy satisfaction functions are formed over the desired ranges to suit the customer's desires. The risk of extreme dynamic loadings exciting resonance is studied by natural frequency and mode analysis by FEM and analytical models. The results show the most critical locations and give guidelines for innovative remedies of the concept before detailed FEM analyses to finalize the design.http://dx.doi.org/10.1155/2011/879049 |
| spellingShingle | Heikki Martikka Erkki Taitokari Optimal Fuzzy and Dynamics Design of Ecological Sandwich Panel Vessel Roofs Advances in Fuzzy Systems |
| title | Optimal Fuzzy and Dynamics Design of Ecological Sandwich Panel Vessel Roofs |
| title_full | Optimal Fuzzy and Dynamics Design of Ecological Sandwich Panel Vessel Roofs |
| title_fullStr | Optimal Fuzzy and Dynamics Design of Ecological Sandwich Panel Vessel Roofs |
| title_full_unstemmed | Optimal Fuzzy and Dynamics Design of Ecological Sandwich Panel Vessel Roofs |
| title_short | Optimal Fuzzy and Dynamics Design of Ecological Sandwich Panel Vessel Roofs |
| title_sort | optimal fuzzy and dynamics design of ecological sandwich panel vessel roofs |
| url | http://dx.doi.org/10.1155/2011/879049 |
| work_keys_str_mv | AT heikkimartikka optimalfuzzyanddynamicsdesignofecologicalsandwichpanelvesselroofs AT erkkitaitokari optimalfuzzyanddynamicsdesignofecologicalsandwichpanelvesselroofs |