Derivation of the Primal Alternatives of the (2008)
Lumped Preconditioned Feti, Yannis Fragakis, Manolis Papadrakakis
This paper, thus, presents the primal alternatives of the lumped preconditioned FETI methods and is organised as follows: Section 2 presents the base formulation of the introduced methods. Section 3...
Manolis Papadrakakis, Nikos D. Lagaros
The paper examines the efficiency of soft computing techniques in structural optimization, in particular algorithms based on evolution strategies combined with neural networks, for solving...
Recent advances in reliability-based structural optimization under earthquake loading (2005)
Yiannis Tsompanakis, Nikos D. Lagaros, Michalis Fragiadakis, Manolis Papadrakakis
In this paper a robust and efficient methodology is presented for treating large-scale reliability-based, structural optimization problems under seismic loads using the pushover analysis method. The...
Structural design in the framework of cascade evolutionary optimization (2005)
Nikos D. Lagaros, Dimos C. Charmpis, Yiannis Tsompanakis, Manolis Papadrakakis
In structural sizing optimization problems the aim is to minimize an objective function under certain constraints. The design variables of the optimization problem are generally discrete and belong...
Multi-performance robust optimum design of steel structures (2005)
Nikos D. Lagaros, Vagelis Plevris, Yiannis Tsompanakis, Manolis Papadrakakis
In engineering problems the randomness and uncertainties are inherent, thus the scatter of structural parameters from their nominal ideal values is unavoidable. Robust Design Optimization (RDO)...
Yannis Fragakis, Manolis Papadrakakis
numerical efficiency of primal and dual methods
Yannis Fragakis, Manolis Papadrakakis
multiple right-hand sides and implicit dynamics
Manolis Papadrakakis, Nikos D. Lagaros, Vagelis Plevris
Almost every real world problem involves simultaneous optimization of several incommensurable and often competing objectives which constitutes a multi-objective optimization problem. In...
Abstract Reliability-based structural optimization using (2002)
Neural Networks, Monte Carlo Simulation, Manolis Papadrakakis, Nikos D. Lagaros
paper examines the application of neural networks (NN) to reliability-based structural optimization of largescale structural systems. The failure of the structural system is associated with the...