Abstract
Evolutionary Structural Optimization (ESO) method is well known as one of several topology optimization methods and has been applied to a lot of optimization problems. While ESO method evolves the given model into an optimum by subtracting several elements, in AESO method elements are added in a previous step of the evolutionary procedure. And in BESO (Bidirectional ESO) method, some elements are either generated or eliminated from a previous model of evolutionary procedure. In this paper, Ranked Bidirectional Evolutionary Structural Optimization (R-BESO) method is introduced as one of the topology optimization methods using an evolutionary algorithm and is applied to several optimization problems. The method can get optimum topologies of the structures throughout fewer iterations comparing with previous several methods based on ESO. R-BESO method is similar to BESO method except that elements are generated near a candidate element according to the rank calculated by sensitivity analyses. The displacement sensitivity analysis was adopted by the nodal displacements of a candidate element in order to determine a rank on the free edges for two dimensional model or the free surfaces for three dimensional model. In this paper, R-BESO method is proposed as another useful design tool like the previous ESO and BESO method for the two bar frame problem, the Michell type structure problem and the three dimension short cantilever beam problem, which had been used to verify reasonability of ESO method family. For the three dimensions short cantilever beam problem an optimized topology could be obtained with much fewer iterations with respect to the results of other ESO methods.
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References
H. Kim, M. J. Garcia, O. M. Querin and G. P. Steven, Introduction of fixed grid in evolutionary structural optimization,Engineering Computations. 17 (4) (2000) 427–439.
Q. Li, G. P. Steven, O. M. Querin and Y. M. Xie, Evolutionary shape optimization for stress minimization,Mechanics Research Communications 26 (6) (1999) 657–664.
Q. Q. Liang, Y. M. Xie and G. P. Steven, Optimal topology selection of continuum structures with displacement constraints,Computers and Structures. 77 (2000) 635–644.
K. H. Lim, J. W. Bull and H. K. Kim, Finite elements adding and removing method for twodimensional shape optimal design,KSME International Journal. 15 (4) (2001) 413–421.
G. P. Steven, Y. M. Querin and Xie, Evolutionary structural optimization using an additive algorithm,Finite Elements in Analysis and Design. 34 (3–4) (2000) 291–308.
V. Querin, G. P. Young, Y. M. Steven and Xie, Computational efficiency and validation of bidirectional evolutionary structural optimisation,Computer Methods in Applied Mechanics and Engineering. 189 (2) (2000) 559–573.
Y. M. Xie and G. P. Steven, Optimal design of multiple load case structures using an evolutionary procedure,Engineering Computations. 11 (4) (1994) 295–302.
Y. M. Xie and G. P. Steven, Evolutionary structural optimization, Springer, (1997).
W. Li, Q. Li, G. P. Steven and Y. M. Xie, An evolutionary approach to elastic contact optimization of frame structures,Finite Elements in Analysis and Design. 40 (2003) 61–81.
C. Kim, S. Wang, K. R. Bae and K. K. Choi, Reliability-based topology optimization with uncertainties,Journal of Mechanical Science and Technology. 20 (4) (2006) 494–504.
T. W. Lee, A study for robustness of objective function and constraints in robust design optimization,Journal of Mechanical Science and Technology. 20 (10) (2006) 1662–1669.
K. H. Chang and P. S. Tang, Integration of design and manufacturing for structuralshape optimization,Advances in Engineering Software. 32 (2001) 555–567.
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Ryu, CH., Lee, YS. A study on ranked bidirectional evolutionary structural optimization (R-BESO) method for fully stressed structure design based on displacement sensitivity. J Mech Sci Technol 21, 1994–2004 (2007). https://doi.org/10.1007/BF03177457
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DOI: https://doi.org/10.1007/BF03177457