Sensitivity analysis and applied research on topology optimization based on element-free Galerkin method
Journal Title: Science Paper Online - Year 2008, Vol 3, Issue 8
Abstract
To prevent numerical instabilities occurring in the conventional topology optimization, we present a model of structural topology optimization based on the element-free Galerkin method (EFG), in which the relative density of nodes is chosen as design variables and the minimized compliance as the objective function. The algorithm of sensitivity was derived and MATLAB programs were written to finish two topology optimization examples of continuum structures using Solid Isotropic Microstructure of Penalization (SIMP) and the optimality criteria method. Compared with the results obtained by the finite element method, the proposed method is not only effective on suppressing checkerboards but also has better convergence.
Authors and Affiliations
Xiang LIU, Shuguang GONG, Su CAO, Xin LIU
Keywords
Related Articles
- EP ID EP102195
- DOI -
- Views 92
- Downloads 0
Field monitoring on vibration acceleration response of railway in seasonal frozen region of Daqing induced by train-steering in winter
Through the field monitoring experiment of Daqing seasonal frozen region in winter, the vibration accelerations of the sleeper and the subgrade induced by train-steering with high speed were measured and the variation la...
Lateral active safety system based on THASV-II
Some key technologies related to lateral active safety systems are studied on the second generation platform of Tsinghua Advanced Safety Vehicle (THASV-II). Based on the fusion of machine vision, laser radar and other se...
Study on corrosion mechanism of RH immersion tube castable
Corrosion mechanism of RH immersion tube castable is yet to be revealed due to few studies on the reactions between RH immersion tube castable and molten slag. In this paper, according to the phase equilibrium theory and...
Synthesis and characterization of a new 3D supramolecular structure constructed by Waugh-type polyoxoanion and lanthanide ions
A new 3D supramolecular structure [(CH3)4N]2Nd[HMnMo9O32]•6H2O (1) has been obtained in aqueous solution by reaction of the Waugh-type polyoxoanion [MnMo9O32]6- with Nd3+ ions, and characterized by IR, UV, element analys...
加载负磁导率超常媒质的小型化矩形波导
结合负磁导率超常媒质电磁特性实现左手特性矩形波导的小型化。在矩形波导中周期性填充改进的谐振方环结构超常媒质可以在较宽的谐振频带内同时产生负磁导率和负介电常数。通过仿真建模和尺寸优化设计实现波导小型化。通过散射参量提取超常...