Results 301 to 310 of about 333,273 (342)
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A topological derivative method for topology optimization
Structural and Multidisciplinary Optimization, 2007We propose a fictitious domain method for topology optimization in which a level set of the topological derivative field for the cost function identifies the boundary of the optimal design. We describe a fixed-point iteration scheme that implements this optimality criterion subject to a volumetric resource constraint. A smooth and consistent projection
Martin P. Bendsøe +3 more
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Neural Network Topology Optimization
2005The determination of the optimal architecture of a supervised neural network is an important and a difficult task. The classical neural network topology optimization methods select weight(s) or unit(s) from the architecture in order to give a high performance of a learning algorithm.
Attik, Mohammed +2 more
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Reliability-based topology optimization
Structural and Multidisciplinary Optimization, 2004Udgivelsesdato ...
Kharmanda, G. +3 more
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Computers & Structures, 1998
Abstract This is the third part of a three paper review of homogenization and topology optimization. In the first two papers the homogenization theory and solution of the equations for different material models to be used in topology optimization by the homogenization method are described.
Ernest Hinton, Behrooz Hassani
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Abstract This is the third part of a three paper review of homogenization and topology optimization. In the first two papers the homogenization theory and solution of the equations for different material models to be used in topology optimization by the homogenization method are described.
Ernest Hinton, Behrooz Hassani
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Optimization of the Topology of Photoresistors [PDF]
Measurement Techniques, 2004 Phenomenological definitions of generation-recombination noise, survival time, and the photoelectric gain factor for photoresistors are given. The optimal – i.e., from the point of view of detectability – topology in the case where shaded portions of the sensitive element are applied is determined.
Yu. N. Dolganin, M. A. Savchenko
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Continuum Topology Optimization
10th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference, 2004Many shortcomings of the existing topology optimization approaches are reported because the number of design variables is too large and design change is limited by the setting of the initial domain that absolutely inf luences optimization results although much improvement is under way.
Il Yong Kim, Soobum Lee, Byung Man Kwak
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On topology optimization of plates with prestress
International Journal for Numerical Methods in Engineering, 2001AbstractIn this work, topology optimization is used to optimize the compliance or eigenvalues of prestressed plates. The prestress is accounted for by including the force equivalent to the prestressing and adding the initial stress stiffness matrix to the original stiffness matrix.
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2020
In this chapter, a topology optimization algorithm based on the topological derivative concept combined with a level-set domain representation method is presented. The model problem is governed by the elasticity system into two spatial dimensions. The topological asymptotic expansion of a tracking-type shape functional, associated with the nucleation ...
Jan Sokołowski, Antonio André Novotny
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In this chapter, a topology optimization algorithm based on the topological derivative concept combined with a level-set domain representation method is presented. The model problem is governed by the elasticity system into two spatial dimensions. The topological asymptotic expansion of a tracking-type shape functional, associated with the nucleation ...
Jan Sokołowski, Antonio André Novotny
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Topology optimization in OpenMDAO
Structural and Multidisciplinary Optimization, 2019Recently, topology optimization has drawn interest from both industry and academia as the ideal design method for additive manufacturing. Topology optimization, however, has a high entry barrier as it requires substantial expertise and development effort. The typical numerical methods for topology optimization are tightly coupled with the corresponding
Justin S. Gray +4 more
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Adaptive topology optimization
Structural Optimization, 1995Topology optimization of continuum structures is often reduced to a material distribution problem. Up to now this optimization problem has been solved following a rigid scheme. A design space is parametrized by design patches, which are fixed during the optimization process and are identical to the finite element discretization.
Ekkehard Ramm, Kurt Maute
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