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Title of Journal: Struct Multidisc Optim

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Abbravation: Structural and Multidisciplinary Optimization

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Springer-Verlag

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1615-1488

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Multiobjective evolutionary optimization of period

Authors: Mahmoud I Hussein Karim Hamza Gregory M Hulbert Richard A Scott Kazuhiro Saitou
Publish Date: 2005/10/27
Volume: 31, Issue: 1, Pages: 60-75
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Abstract

An important dispersionrelated characteristic of wave propagation through periodic materials is the existence of frequency bands A medium effectively attenuates all incident waves within stopbands and allows propagation within passbands The widths and locations of these bands in the frequency domain depend on the layout of contrasting materials and the ratio of their properties Using a multiobjective genetic algorithm the topologies of onedimensional periodic unit cells are designed for target frequency band structures characterizing longitudinal wave motion The decision variables are the number of layers in the unit cell and the thickness of each layer Binary and mixed formulations are developed for the treatment of the optimization problems Designs are generated for the following novel objectives 1 maximum attenuation of time harmonic waves 2 maximum isolation of general broadband pulses and 3 filtering signals at predetermined frequency windows The saturation of performance with the number of unitcell layers is shown for the first two cases In the filtering application the tradeoff between the simultaneous realization of passband and stopband targets is analyzed It is shown that it is more difficult to design for passbands than it is to design for stopbands The design approach presented has potential use in the development of vibration and shock isolation structures sound isolation pads/partitions and multiple band frequency filters among other applications

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  2. Multi-dimensional optimization of functionally graded material composition using polynomial expansion of the volume fraction
  3. On symmetry and non-uniqueness in exact topology optimization
  4. Integrated layout and topology optimization design of multi-frame and multi-component fuselage structure systems
  5. Single-level composite wing optimization based on flexural lamination parameters
  6. Topology optimization of composite structures with data-driven resin filling time manufacturing constraint
  7. A survey on handling computationally expensive multiobjective optimization problems using surrogates: non-nature inspired methods
  8. Minimum weight design of solid annular plates under an assigned limit ring load
  9. A sensitivity-based commonality strategy for family products of mild variation, with application to automotive body structures
  10. A new reliability analysis method based on the conjugate gradient direction
  11. Aircraft wing box optimization considering uncertainty in surrogate models
  12. Multidisciplinary dynamic optimization of horizontal axis wind turbine design
  13. Geometrical aspects of optimum truss like structures for three-force problem
  14. Advances in optimization of highrise building structures
  15. Topology optimization of fail-safe structures using a simplified local damage model
  16. Topology optimization of frame structures with flexible joints
  17. A concurrent subspace collaborative optimization architecture to structural synthetical optimization design
  18. Topology optimization of internal partitions in a flow-reversing chamber muffler for noise reduction
  19. Material interpolation schemes for unified topology and multi-material optimization
  20. Variational proof of optimality criteria for Michell structures with pre-existing members
  21. Drop test simulation and surrogate-based optimization of a dishwasher mechanical structure and its packaging module
  22. Resolving issues with member buckling in truss topology optimization using a mixed variable approach
  23. Adaptive infill sampling criterion for multi-fidelity optimization based on Gappy-POD
  24. A comparative study of uncertainty propagation methods for black-box-type problems
  25. Multiobjective optimization for crash safety design of vehicles using stepwise regression model
  26. A double-distribution statistical algorithm for composite laminate optimization
  27. Robust design optimization by polynomial dimensional decomposition
  28. A crossing sensitivity filter for structural topology optimization with chamfering, rounding, and checkerboard-free patterns
  29. Hybrid evolutionary algorithm and application to structural optimization
  30. Topology optimization of shell structures using adaptive inner-front (AIF) level set method
  31. Harmony search algorithm for minimum cost design of steel frames with semi-rigid connections and column bases
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  35. Design optimization of a runflat structure based on multi-objective genetic algorithm
  36. On minimum compliance problems of thin elastic plates of varying thickness
  37. On the analytical derivation of the Pareto-optimal set with applications to structural design
  38. Hierarchical model calibration for designing piezoelectric energy harvester in the presence of variability in material properties and geometry
  39. Topology optimization of free vibrating continuum structures based on the element free Galerkin method
  40. Fracture resistance via topology optimization
  41. Analysis and optimal design of plates and shells under dynamic loads – II: optimization
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  43. Adhesive surface design using topology optimization
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  47. Shape sensitivity analysis using a fixed basis function finite element approach
  48. Globally optimal benchmark solutions to some small-scale discretized continuum topology optimization problems
  49. Multi-constrained topology optimization via the topological sensitivity
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  51. Metamodeling by symbolic regression and Pareto simulated annealing
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