Optimization of composite structures in vibration view

Analytical and Numerical Methods in Mechanical Design

دوره 1، شماره 1، شهریور 2022، صفحه 41-48   

نویسندگان

SM. azizisough^{* 1}؛ MH. Yas²؛ MM. Najafi Zadeh³

¹Department of Mechanic, Islamic Azad University branch of Arak

²Department of Mechanic, Kermanshah Razi University

³Department of Mechanic, Kermanshah Razi University, Kermanshah, Iran.

چکیده

Two dimensional analysis of fluid flow and heat transfer through the trapezoidal microchannel has been done. The energy and Nervier stokes equations have been solved considering the wall slip velocity and temperature jump using the Lattice Boltzmann method (LBM). The relation between relaxation times and Knudsen number has been derive in LBM. The effects of Reynolds number, Nusslelt number, temperature jump and velocity slip on different Knudsen number (0.001<Kn<0.1) and different aspect ratios (0.2<AR<1.2) were investigated. The good agreement between results and earlier studies were found. Results show the important effect of AR and Knudsen number on Nusselt number in trapezoidal microchannel. At low Reynolds number the significant influence on Nusselt number has been seen.

کلیدواژه‌ها

Genetic Algorithm؛ Optimization؛ Composite laminate؛ Vibration

مراجع

1. Miki (1982) "Material Design of Composite Laminates with Required In-Plane ElasticProperties," Progress in Science and Engineering of Composites, Vol. 2, 1725-1731.
2. Hayashi,T. Kawata, K. and Umekawa, S. (eds.) ICCM-IV, Tokyo..K.J. Callahan and G.E. Weeks, "Optimum Design of Composite Laminates Using GeneticAlgorithms," Composite Engineering, 2(3), 149-160.
3. Le Riche and R.T. Haftka (1993) , "Optimization of Stacking Sequence Design forBuckling Load Maximization by Genetic Algorithms," AIAA Journal, 31(5), 951-956.
4. T. McMahon, L.T. Watson, G.A. Soremekun, Z. Gürdal, and R.T. Haftka (1998), "AFortran 90 Genetic Algorithm Module for Composite Laminate Structure Design" Engineeringwith Computers, 14, pp. 260-273.
5. Deb (2001), Multi-Objective Optimization Using Evolutionary Algorithms, UK Wiley,Chichester.
6. Gürdal, R. T. Haftka and P. Hajela (1998), “Design and Optimization of LaminatedComposite Materials”, Wiley Interscience, p. 300.
7. F. Ashby (2000), “Multi-objective optimization in material design and selection”, ActaMaterialia 48, pp. 359-369.
8. A. Coello (2000), A. D. Christiansen, “Multi-objective optimization of trusses using geneticalgorithms”, Computers and Structures 75, pp. 647-660.