Benchmark Problems in Structural Optimization

2011 ◽  
pp. 259-281 ◽  
Author(s):  
Amir Hossein Gandomi ◽  
Xin-She Yang
Keyword(s):  
Structural Optimization ◽  
Benchmark Problems

scholarly journals A Study of Joint Cost Inclusion in Linear Programming Optimization

2013 ◽  
Vol 3 (4) ◽  
pp. 473-478
Author(s):  
P. Armaos
Keyword(s):  
Linear Programming ◽  
Structural Optimization ◽  
Reliable Method ◽  
Benchmark Problems ◽  
Small Scale ◽  
Past Century ◽  
Optimization Software ◽  
The Past ◽  
Viable Solution ◽  
Scale Optimization

The concept of Structural Optimization has been a topic or research over the past century. Linear Programming Optimization has proved being the most reliable method of structural optimization. Global advances in linear programming optimization have been recently powered by University of Sheffield researchers, to include joint cost, self-weight and buckling considerations. A joint cost inclusion scopes to reduce the number of joints existing in an optimized structural solution, transforming it to a practically viable solution. The topic of the current paper is to investigate the effects of joint cost inclusion, as this is currently implemented in the optimization code. An extended literature review on this subject was conducted prior to familiarization with small scale optimization software. Using IntelliFORM software, a structured series of problems were set and analyzed. The joint cost tests examined benchmark problems and their consequent changes in the member topology, as the design domain was expanding. The findings of the analyses were remarkable and are being commented further on. The distinct topologies of solutions created by optimization processes are also recognized. Finally an alternative strategy of penalizing joints is presented.

Structural Optimization of Silicon for High Efficiencies of Light Emission

2018 ◽  
Vol 138 (4) ◽  
pp. 375-380
Author(s):  
Yuma Sugishita ◽  
Keisuke Inukai ◽  
Keishiro Goshima
Keyword(s):  
Structural Optimization ◽  
Light Emission

An Eight-Node Hexahedral Finite Element with Rotational DOFs for Elastoplastic Applications

2019 ◽  
Vol 11 (1) ◽  
pp. 54-66
Author(s):  
Ayoub Ayadi ◽  
Kamel Meftah ◽  
Lakhdar Sedira ◽  
Hossam Djahara
Keyword(s):  
Mathematical Model ◽  
Finite Element ◽  
Plastic Zone ◽  
Displacement Vector ◽  
Small Strain ◽  
Benchmark Problems ◽  
Plasticity Model ◽  
Vector Approximation ◽  
Calculation Code

Abstract In this paper, the earlier formulation of the eight-node hexahedral SFR8 element is extended in order to analyze material nonlinearities. This element stems from the so-called Space Fiber Rotation (SFR) concept which considers virtual rotations of a nodal fiber within the element that enhances the displacement vector approximation. The resulting mathematical model of the proposed SFR8 element and the classical associative plasticity model are implemented into a Fortran calculation code to account for small strain elastoplastic problems. The performance of this element is assessed by means of a set of nonlinear benchmark problems in which the development of the plastic zone has been investigated. The accuracy of the obtained results is principally evaluated with some reference solutions.

Efficient, accurate reanalysis for structural optimization

AIAA Journal ◽  
1999 ◽  
Vol 37 ◽  
pp. 1663-1669
Author(s):  
Uri Kirsch
Keyword(s):  
Structural Optimization

Coevolutionary approaches to structural optimization

AIAA Journal ◽  
1999 ◽  
Vol 37 ◽  
pp. 1019-1021
Author(s):  
Min-Jea Tahk ◽  
Youdan Kim ◽  
Changho Nam
Keyword(s):  
Structural Optimization

Structural optimization with flutter speed constraints using maximized step size

1975 ◽  
Author(s):  
R. OCONNELL ◽  
N. RADOVCICH ◽  
H. HASSIG
Keyword(s):  
Structural Optimization ◽  
Step Size ◽  
Flutter Speed
Sign in / Sign up

Export Citation Format

Share Document