Discrete Material and Thickness Optimization of sandwich structures
In this paper Discrete Material and Thickness Optimization (DMTO) is used to optimize sandwich composite structures subject to both displacement and linear buckling constraints. Using a new thickness formulation where density design variables scale ply thicknesses rather than constitutive properties...
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| Published in | Composite structures Vol. 217; pp. 75 - 88 |
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| Main Authors | , , |
| Format | Journal Article |
| Language | English |
| Published |
Elsevier Ltd
01.06.2019
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| Subjects | |
| Online Access | Get full text |
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| Abstract | In this paper Discrete Material and Thickness Optimization (DMTO) is used to optimize sandwich composite structures subject to both displacement and linear buckling constraints. Using a new thickness formulation where density design variables scale ply thicknesses rather than constitutive properties, it is possible to size both core and face sheet plies simultaneously. This makes it possible to have different ply thicknesses for core and face sheet layers while also covering ply-drops. Furthermore, separating core and face sheets allows enforcing a symmetric lay-up which can be important to avoid warping during curing. The approach is demonstrated in three numerical examples of increasing complexity. |
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| AbstractList | In this paper Discrete Material and Thickness Optimization (DMTO) is used to optimize sandwich composite structures subject to both displacement and linear buckling constraints. Using a new thickness formulation where density design variables scale ply thicknesses rather than constitutive properties, it is possible to size both core and face sheet plies simultaneously. This makes it possible to have different ply thicknesses for core and face sheet layers while also covering ply-drops. Furthermore, separating core and face sheets allows enforcing a symmetric lay-up which can be important to avoid warping during curing. The approach is demonstrated in three numerical examples of increasing complexity. |
| Author | Peeters, D. Lund, E. Sjølund, J.H. |
| Author_xml | – sequence: 1 givenname: J.H. surname: Sjølund fullname: Sjølund, J.H. email: jhs@mp.aau.dk organization: Department of Materials and Production, Aalborg University, Fibigerstræde 16, Aalborg DK-9220, Denmark – sequence: 2 givenname: D. surname: Peeters fullname: Peeters, D. organization: School of Engineering, Bernal Institute, University of Limerick, Limerick V94 T9PX, Ireland – sequence: 3 givenname: E. surname: Lund fullname: Lund, E. organization: Department of Materials and Production, Aalborg University, Fibigerstræde 16, Aalborg DK-9220, Denmark |
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| Title | Discrete Material and Thickness Optimization of sandwich structures |
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