Structural topology design optimization using Genetic Algorithms with a bit-array representation

2005 ◽  
Vol 194 (36-38) ◽  
pp. 3749-3770 ◽  
Author(s):  
S.Y. Wang ◽  
K. Tai
Keyword(s):  
Genetic Algorithms ◽  
Design Optimization ◽  
Topology Design ◽  
Structural Topology ◽  
Structural Topology Design

Structural Topology Design Optimization for Controlled Crash Behavior

2003 ◽  
Author(s):  
Ciro A. Soto
Keyword(s):  
Design Optimization ◽  
Automotive Industry ◽  
Optimization Problem ◽  
Dynamic Equilibrium ◽  
Topology Design ◽  
Structural Behavior ◽  
Structural Topology ◽  
Design Engineers ◽  
Optimum Topology ◽  
Structural Topology Design

This paper presents a methodology to perform structural topology design optimization for crashworthiness considering a prescribed and safe structural behavior through the dynamic equilibrium equation. This implementation, called here controlled crash behavior, or CCB, is very useful for design engineers in the automotive industry since it allows them to ‘prescribe’ a structural behavior of the vehicle at given locations of interest. The methodology is based on previous work from the author where the optimum topology is determined using a heuristic (optimality) criterion to attain a design with prescribed levels of plastic strains and stresses. The paper includes a simple beam example to demonstrate the CCB approach. Results are consistent with the formulation of the optimization problem.

scholarly journals Continuum structural topology design with genetic algorithms

2000 ◽  
Vol 186 (2-4) ◽  
pp. 339-356 ◽  
Author(s):  
Mark J. Jakiela ◽  
Colin Chapman ◽  
James Duda ◽  
Adenike Adewuya ◽  
Kazuhiro Saitou
Keyword(s):  
Genetic Algorithms ◽  
Topology Design ◽  
Structural Topology ◽  
Structural Topology Design

scholarly journals Spatial zoning for better structural topology design and performance

2020 ◽  
Vol 46 ◽  
pp. 101162
Author(s):  
Dennis P.H. Claessens ◽  
Sjonnie Boonstra ◽  
Hèrm Hofmeyer
Keyword(s):  
Topology Design ◽  
Structural Topology ◽  
And Performance ◽  
Structural Topology Design

Structural topology design with multiple thermal criteria

2000 ◽  
Vol 17 (6) ◽  
pp. 715-734 ◽  
Author(s):  
Qing Li ◽  
Grant P. Steven ◽  
Osvaldo M. Querin ◽  
Y.M. Xie
Keyword(s):  
Topology Design ◽  
Structural Topology ◽  
Structural Topology Design

Optimal Structural Topology Design for Energy Absorption: A Heuristic Approach

2001 ◽  
Author(s):  
Ciro A. Soto
Keyword(s):  
Energy Dissipation ◽  
Kinetic Energy ◽  
Porous Materials ◽  
Numerical Experiments ◽  
Topology Design ◽  
Design Rule ◽  
Structural Domain ◽  
Structural Topology ◽  
New Approach ◽  
Structural Topology Design

Abstract A new approach to design the topology for structures under crash events is presented. The approach is heuristic in essence, but numerical experiments have shown its uses in real problems. Using an interpolation between porous and solid (non-porous) materials plus a re-design rule to by-pass gradient computations the new approach is able to determine better locations of material and density in a given structural domain for kinetic energy dissipation. An example is presented to illustrate the methodology.

Basic Models for Topology Design Optimization in Crashworthiness Problems

1999 ◽  
Author(s):  
Ciro A. Soto ◽  
Alejandro R. Diaz
Keyword(s):  
Design Optimization ◽  
Optimization Problems ◽  
Lattice Models ◽  
Topology Design ◽  
Structural Topology ◽  
Structural Members ◽  
Frontal Crash ◽  
Design Variables ◽  
Crashworthiness Design ◽  
Simple Models

Abstract A study of basic and simple models for topology design optimization in crash events is presented. A 1D collinear and a 2D truss lattice models were implemented and used to solve a set of problems to design the topology of structural members of vehicles under frontal crash. Both design models explore several optimization formulations as well as possible design variables to address the fundamental issues in crashworthiness design, namely, minimization of accelerations while controlling or reducing deformations. Results show the viability of these simple models to solve structural topology optimization problems for crashworthiness.

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