Structure Interaction

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J. Enrique Luco - One of the best experts on this subject based on the ideXlab platform.

  • A simple model for structural control including soil–Structure Interaction effects
    Earthquake Engineering & Structural Dynamics, 1998
    Co-Authors: J. Enrique Luco
    Abstract:

    A simple model for the seismic response of a one-storey Structure subjected to active control in the presence of soil–Structure Interaction effects is presented. The approach is based on the successive use of equivalent 1-DOF oscillators which account for the effects of control and soil–Structure Interaction. Simple expressions for these oscillators based on exact analytical solutions of the control equations and approximate solutions of the Interaction equations are presented. The study includes an evaluation of the effects of soil–Structure Interaction on the seismic response of actively controlled Structures in which the control gains have been determined with and without inclusion of soil–Structure Interaction effects. A simple procedure to include the Interaction effects on the control gains is also presented. © 1998 John Wiley & Sons, Ltd.

Bazilevsyuri - One of the best experts on this subject based on the ideXlab platform.

Michael Schäfer - One of the best experts on this subject based on the ideXlab platform.

  • Efficient shape optimization for fluid–Structure Interaction problems
    Journal of Fluids and Structures, 2015
    Co-Authors: Nima Aghajari, Michael Schäfer
    Abstract:

    Abstract An approach for the shape optimization of fluid–Structure Interaction (FSI) problems is presented. It is based on a partitioned solution procedure for fluid–Structure Interaction, a shape representation with NURBS, and sequential quadratic programming approach for optimization within a parallel environment with MPI as direct coupling tool. The optimization procedure is accelerated by employing reduced order models based on a proper orthogonal decomposition method with snapshots and Kriging. After the verification of the FSI optimization, the functionality and efficiency of the reduced order modeling as well as the corresponding optimization procedure are investigated.

Hsuming-chen - One of the best experts on this subject based on the ideXlab platform.

De R René Borst - One of the best experts on this subject based on the ideXlab platform.

  • Energy conservation under incompatibility for fluid-Structure Interaction problems
    Computer Methods in Applied Mechanics and Engineering, 2003
    Co-Authors: Van Eh Harald Brummelen, Sj Steven Hulshoff, De R René Borst
    Abstract:

    Concurrent numerical methods for fluid–Structure Interaction problems are typically based on partitioned solution procedures. However, such partitioned methods are inherently non-conservative. In the present work, we investigate the conservation properties of monolithic discretisations for fluid–Structure Interaction problems. We consider a prototypical fluid–Structure Interaction problem, viz., the piston problem. A variational formulation allows us to establish precisely the conservation properties of the continuum problem and its discretisation by the finite-element method. We show that the conservation of energy by monolithic discretisations is only trivially maintained under restrictive compatibility conditions on the approximation spaces in the fluid and the Structure. Moreover, we introduce a new discretisation based on coincidence conditions which ensures energy conservation under incompatibility. Numerical results which illustrate the effectiveness of the new discretisation are presented.