Implementation of a crack propagation constraint within a structural optimization software

2003 ◽  
Vol 25 (5-6) ◽  
pp. 327-338 ◽  
Author(s):  
M. Papila ◽  
R.T. Haftka
Keyword(s):  
Crack Propagation ◽  
Structural Optimization ◽  
Optimization Software

Basic Study on Performance Comparison of Structural Optimization Software Systems

2014 ◽  
Vol 38 (12) ◽  
pp. 1403-1413 ◽  
Author(s):  
Wook Han Choi ◽  
Cheng Guo Huang ◽  
Gyung-Jin Park ◽  
Tai-Kyung Kim
Keyword(s):  
Structural Optimization ◽  
Performance Comparison ◽  
Software Systems ◽  
Basic Study ◽  
Optimization Software

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.

Optimization of Integrally Stiffened Panels Based on Crack Propagation Life

2008 ◽  
Vol 33-37 ◽  
pp. 249-254
Author(s):  
Zhi Ping Yin ◽  
Qi Qing Huang ◽  
Bing Hui Zhang
Keyword(s):  
Crack Propagation ◽  
Structural Optimization ◽  
Optimization Design ◽  
Design Method ◽  
Structural Parameters ◽  
Stiffened Panels ◽  
Structural Fatigue ◽  
Design Variables ◽  
Optimization Methodology ◽  
Integrally Stiffened Panels

Recent development in structure optimization offers the potential for significant improvements in the design of more durable structures. The present paper reveals the importance of structural optimization with crack propagation life of integrally stiffened panels. In the full paper, we explain in detail how to optimize structural fatigue life and design the structure of integrally stiffened panels which has the optimization life. The first topic is: the review of existing structural optimization design method. The second topic is: optimization methodology with crack propagation life. In our optimization methodology, the RSM (Response Surface Methodology) and GA (Genetic Algorithm) are successfully applied for structural optimization design with crack propagation life. The third topic is: damage tolerance optimization of integrally stiffened panels with crack propagation life. In this paper, structural parameters: the height and location of stringer, are the design variables. The structural weight is a fixed value. Through analyzing, the optimization structure with maximum life can not simply be chosen, and the maximum life would not increase all ways while the high of stringer increased. At last, the optimization structure, which has maximum crack propagation life, is given on the integrally stiffened panels.

Comparison study of some commercial structural optimization software systems

2016 ◽  
Vol 54 (3) ◽  
pp. 685-699 ◽  
Author(s):  
Wook-han Choi ◽  
Jong-moon Kim ◽  
Gyung-Jin Park
Keyword(s):  
Structural Optimization ◽  
Software Systems ◽  
Comparison Study ◽  
Optimization Software

Applications of structural optimization software in the design process

1990 ◽  
Vol 27 (12) ◽  
pp. 1057-1059 ◽  
Author(s):  
Torsten Brama ◽  
Ragnar Rosengren
Keyword(s):  
Structural Optimization ◽  
Design Process ◽  
Optimization Software
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