| About this Abstract |
| Meeting |
2024 ASC Technical Conference, US-Japan Joint Symposium, D30 Meeting
|
| Symposium
|
2024 ASC Technical Conference, US-Japan Joint Symposium, D30 Meeting
|
| Presentation Title |
Optimal Design of Viscoelastic Laminated Sandwich Composite Structures Considering Thermally-Induced Deformation of Composite Skins Using Lamination Parameters |
| Author(s) |
Masaki Kameyama, Masaya Yako, Keita Kato, Daisuke Ito, Nozomu Kogiso |
| On-Site Speaker (Planned) |
Masaki Kameyama |
| Abstract Scope |
The present paper deals with the vibration and damping characteristics of viscoelastic laminated sandwich composite structures, the composite skins and the viscoelastic core of which are manufactured separately. First, the effect of laminate configuration on the thermally-induced deformation characteristics is investigated for composite skins fixed at the central point. The flatness of composite skins with thermally-induced deformation is evaluated by using the first-order shear deformation theory. To examine the effect of laminate configuration, the thermally-induced deformation characteristics are represented on the lamination parameter plane. Besides, the effect of laminate configuration of skins on the vibration and damping characteristics is also investigated for simply-supported sandwich structures. The natural frequency and loss factor of the first vibration mode of sandwich structures are evaluated by using the layer-wise theory based on the first-order shear deformation theory. To examine the effect of laminate configuration of skins, the concept of complex modulus is introduced and the vibration and damping characteristics are also represented on the lamination parameter plane. Next, a multi-objective optimization for simply-supported sandwich structures to minimize the thermally-induced deformation of composite skins and to maximize the natural frequency and the modal loss factor of sandwich structures is conducted by using a differential evolution in which lamination parameters are used as intermediate design variables. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |