Session Details
MS02-2: Adaptive Structures: Theory, Modelling, Simulation and Evaluation (Ganzes Minisymposium anzeigen)
Wednesday, 11. October 2017; 16:00 - 18:00 Uhr in Raum 7.22
Sitzungsleitung: Christian Kelleter
16:00
Adaptive Structures: Optimum Design Methodology, Case Study and Prototype (Keynote)
Gennaro Senatore (Swiss Federal Institute of Technology (EPFL))
Kurzfassung:
This paper presents an overview of a new methodology to design optimum adaptive structures with minimum whole-life energy comprising an embodied part in the material and an operational part for structural adaptation. Instead of using more material to cope with the effect of rare but strong loading events, a strategically integrated actuation system redirects the internal load path to homogenize the stresses and keep deflections within limits by changing the shape of the structure.
Adaptive Structures: Optimum Design Methodology, Case Study and Prototype (Keynote)
Gennaro Senatore (Swiss Federal Institute of Technology (EPFL))
Kurzfassung:
This paper presents an overview of a new methodology to design optimum adaptive structures with minimum whole-life energy comprising an embodied part in the material and an operational part for structural adaptation. Instead of using more material to cope with the effect of rare but strong loading events, a strategically integrated actuation system redirects the internal load path to homogenize the stresses and keep deflections within limits by changing the shape of the structure.
16:40
Feedback Controller Design and Topology Optimization for Truss Structures Under Uncertain Dynamic Loads
Anja Kuttich (Technical University of Darmstadt), Stefan Ulbrich (Technical University of Darmstadt)
Kurzfassung:
We consider the problem of topology optimization of truss structures under uncertain dynamic loads and combine the topology optimization problem with a feedback controller design via the $H_infty$-control problem. With the help of the Bounded Real Lemma the optimization problem can be formulated as nonlinear semidefinite programming problem. We solve the resulting problem using a sequential semidefinite programming approach. The considerations are complemented by numerical results for trusses.
Feedback Controller Design and Topology Optimization for Truss Structures Under Uncertain Dynamic Loads
Anja Kuttich (Technical University of Darmstadt), Stefan Ulbrich (Technical University of Darmstadt)
Kurzfassung:
We consider the problem of topology optimization of truss structures under uncertain dynamic loads and combine the topology optimization problem with a feedback controller design via the $H_infty$-control problem. With the help of the Bounded Real Lemma the optimization problem can be formulated as nonlinear semidefinite programming problem. We solve the resulting problem using a sequential semidefinite programming approach. The considerations are complemented by numerical results for trusses.
17:00
Experimental and Theoretical Analysis of Cable dome
Peter Cauner (Technical University of Košice, Faculty of Civil Engineering), Stanislav Kmet (Technical University of Košice, Faculty of Civil Engineering), Marek Mojdis (Technical University of Košice, Faculty of Civil Engineering)
Kurzfassung:
The paper deals with analysis of newly developed adaptive cable dome which has the ability to change stiffness configuration to adapt its behavior to current loading conditions. Adaptive cable dome was developed and created on the Faculty of Civil Engineering Technical University of Kosice. In the article are presented results of experimental and theoretical analyses which are compared. Tests are aimed to verifying ability of cable dome to adapt its state of stress to changing load cases.
Experimental and Theoretical Analysis of Cable dome
Peter Cauner (Technical University of Košice, Faculty of Civil Engineering), Stanislav Kmet (Technical University of Košice, Faculty of Civil Engineering), Marek Mojdis (Technical University of Košice, Faculty of Civil Engineering)
Kurzfassung:
The paper deals with analysis of newly developed adaptive cable dome which has the ability to change stiffness configuration to adapt its behavior to current loading conditions. Adaptive cable dome was developed and created on the Faculty of Civil Engineering Technical University of Kosice. In the article are presented results of experimental and theoretical analyses which are compared. Tests are aimed to verifying ability of cable dome to adapt its state of stress to changing load cases.
17:20
Simulation and optimal control of dielectric elastomer actuated systems
Tristan Schlögl (Friedrich-Alexander University of Erlangen-Nürnberg), Sigrid Leyendecker (Friedrich-Alexander University of Erlangen-Nürnberg)
Kurzfassung:
This contribution introduces different modelling techniques and optimal control approaches for humanoid structures that are actuated by dielectric elastomers. Dielectric elastomers, also known as artificial muscles, belong to the group of smart materials. When excited with an electrical voltage, the elastic material contracts noiselessly, allowing for smooth motion of the actuated system.
Simulation and optimal control of dielectric elastomer actuated systems
Tristan Schlögl (Friedrich-Alexander University of Erlangen-Nürnberg), Sigrid Leyendecker (Friedrich-Alexander University of Erlangen-Nürnberg)
Kurzfassung:
This contribution introduces different modelling techniques and optimal control approaches for humanoid structures that are actuated by dielectric elastomers. Dielectric elastomers, also known as artificial muscles, belong to the group of smart materials. When excited with an electrical voltage, the elastic material contracts noiselessly, allowing for smooth motion of the actuated system.