Two phase dynamic model for gas phase propylene copolymerization in fluidized bed reactor
Porous materials have gained wide use in high level engineering structures due to their high stiffness/weight ratio, good energy absorption properties, etc. Frequently, thermal behavior is also an issue of concern and optimized multifunctional thermo-mechanical responses are sought for. This paper p...
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| Main Authors: | , , |
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| 格式: | Conference or Workshop Item |
| 出版: |
2011
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| 主題: | |
| 在線閱讀: | http://eprints.um.edu.my/7011/ http://www.scopus.com/inward/record.url?eid=2-s2.0-79955845783&partnerID=40&md5=3167c74c4543f192d1ff134da17f6a9b |
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| 機構: | Universiti Malaya |
| 總結: | Porous materials have gained wide use in high level engineering structures due to their high stiffness/weight ratio, good energy absorption properties, etc. Frequently, thermal behavior is also an issue of concern and optimized multifunctional thermo-mechanical responses are sought for. This paper presents the application of a hybrid two-stage method for achieving an optimized layout of periodic truss-like structures in order to obtain a good compromise between thermal and mechanical elastic properties. The first stage employs a derivative free optimization method, which explores the design space, not getting trapped by local minima. The second stage uses a derivative based optimization algorithm to perform a refinement of the solution obtained in the first stage. |
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