scholarly journals Shape and topology optimization by fixed grid and genetic algorithms

2009 ◽  
Author(s):  
Mariano Victoria Nicolás
Keyword(s):  
Genetic Algorithms ◽  
Topology Optimization ◽  
Shape And Topology Optimization ◽  
Fixed Grid ◽  
And Topology

Simultaneous Shape and Topology Optimization of Planar Linkage Mechanisms Based on the Spring-Connected Rigid Block Model

2019 ◽  
Vol 142 (1) ◽  
Author(s):  
Jeonghan Yu ◽  
Sang Min Han ◽  
Yoon Young Kim
Keyword(s):  
Topology Optimization ◽  
Simultaneous Optimization ◽  
Optimization Process ◽  
Rigid Block ◽  
Low Resolution ◽  
Block Model ◽  
Shape And Topology Optimization ◽  
Fixed Grid ◽  
Computation Efficiency ◽  
And Topology

Abstract Using the topology optimization can be an effective means of synthesizing planar rigid-body linkage mechanisms to generate desired motion, as it does not require a baseline mechanism for a specific topology. While most earlier studies were mainly concerned with the formulation and implementation of topology optimization-based synthesis in a fixed grid, this study aims to realize the simultaneous shape and topology optimization of planar linkage mechanisms using a low-resolution spring-connected rigid block model. Here, we demonstrate the effectiveness of simultaneous optimization over a higher-resolution fixed-grid rigid block-based topology optimization process. When shape optimization to change the block shapes is combined with topology optimization to synthesize the mechanism, the use of low-resolution discretized models improves the computation efficiency considerably and helps to yield compact mechanisms with less complexity, making them more amenable to fabrication. After verifying the effectiveness of the simultaneous shape and topology optimization process with several benchmark problems, we apply the method to synthesize a mechanism which guides a planar version of a human's gait trajectory.

Optimal Design of CNC Crushing Machine Steady Based on Genetic Algorithm

2013 ◽  
Vol 397-400 ◽  
pp. 1129-1132
Author(s):  
De Xin Zhang ◽  
Ming Jian Han ◽  
Yang Jie Ou ◽  
Guo Qing Wang ◽  
Guo Qing Hao ◽  
...  
Keyword(s):  
Genetic Algorithm ◽  
Genetic Algorithms ◽  
Topology Optimization ◽  
Optimization Design ◽  
Structure Optimization ◽  
Multi Objective Optimization ◽  
Shape And Topology Optimization ◽  
And Topology ◽  
Design Variables ◽  
Starting Point

The Genetic Algorithms In engineering structure optimization design includes Truss Structure optimization, Shape and topology optimization, Composite materials optimization, layout optimization, Multi-Objective Optimization. This paper combined with engineering background , Selecting the Pressing gear of CNC crushing Machine Steady as starting point for Optimization modeling .Analyzing the simple conditions theoretical physical model of CNC Crushing Machine Steady, Reasonably selected design variables ,using Conventional Methods and genetic algorithms to optimize the Steady ,obtainning every iterative step relevant data under the two methods, and analyzing the results ,analysis the accuracy of the optimize results through the stress and displacement map .

scholarly journals Shape and topology optimization of a permanent-magnet machine under uncertainties

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Piotr Putek ◽  
Roland Pulch ◽  
Andreas Bartel ◽  
E Jan W ter Maten ◽  
Michael Günther ◽  
...  
Keyword(s):  
Topology Optimization ◽  
Permanent Magnet ◽  
Permanent Magnet Machine ◽  
Shape And Topology Optimization ◽  
And Topology
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