DocumentCode
2812472
Title
Notice of Retraction
Effects of Poisson´s ratio of tension-only material on optimal stiffness design
Author
Shi, J. ; Wang, Z.Z.
Author_Institution
Res. Center of Water Engrg. Safety & Disaster Prev., Northwest A&F Univ., Yangling, China
Volume
8
fYear
2010
fDate
22-24 Oct. 2010
Abstract
Notice of Retraction
After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.
We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.
The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.
For topology optimization of a structure with tension-only material, the effects of the Poisson´s ratio of material on the final structural topologies are investigated. To simulate the topology optimization of a structure with tension-only material, the material-replacement method is presented. In the method the original tension-only material is replaced with a new isotropic material with the same modulus and Poisson´s ratio to simplify the structural analysis. When the original material is replaced with isotropic material, only approximate displacement field can be obtained. To decrease the error between the actual displacement field of the structure with original material and the current displacement field of the structure with isotropic material, the local effective stiffness of a material point is modified according to the local strain and stress. To find the effects of the Poisson´s ratio of the new isotropic material on the final material distribution, in an example, the Poisson´s ratio of the isotropic material is specified to be zero in optimization. Numerical results show the structural topologies are different and the final topology of structure with zero-Poisson´s ratio material is more reasonable.
After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.
We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.
The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.
For topology optimization of a structure with tension-only material, the effects of the Poisson´s ratio of material on the final structural topologies are investigated. To simulate the topology optimization of a structure with tension-only material, the material-replacement method is presented. In the method the original tension-only material is replaced with a new isotropic material with the same modulus and Poisson´s ratio to simplify the structural analysis. When the original material is replaced with isotropic material, only approximate displacement field can be obtained. To decrease the error between the actual displacement field of the structure with original material and the current displacement field of the structure with isotropic material, the local effective stiffness of a material point is modified according to the local strain and stress. To find the effects of the Poisson´s ratio of the new isotropic material on the final material distribution, in an example, the Poisson´s ratio of the isotropic material is specified to be zero in optimization. Numerical results show the structural topologies are different and the final topology of structure with zero-Poisson´s ratio material is more reasonable.
Keywords
Poisson ratio; design engineering; elasticity; optimisation; structural engineering; topology; approximate displacement field; isotropic material; material replacement method; optimal stiffness design; structural topology optimization; tension-only material; zero-Poisson ratio material; Poisson´s ratio; material-replacement method; tension-only; topology optimization;
fLanguage
English
Publisher
ieee
Conference_Titel
Computer Application and System Modeling (ICCASM), 2010 International Conference on
Conference_Location
Taiyuan
Print_ISBN
978-1-4244-7235-2
Type
conf
DOI
10.1109/ICCASM.2010.5619203
Filename
5619203
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