Torsional stiffness and weight optimization of a real bus structure

In this paper, the structural optimization of a real bus structure is proposed. The proposed optimization has been accomplished by means of genetic algorithms. The structural behavior of the bus structure when subjected to weight and torsion was also analyzed using the finite element method (FEM). The results demonstrate that improved weight and torsional stiffness are achieved with the optimized structure.

[1]  Shaofan Li.  The micromechanics theory of classical plates: a congruous estimate of overall elastic stiffness , 2000 .

[2]  F Lan,et al.  Comparative analysis for bus side structures and lightweight optimization , 2004 .

[3]  Fang De-guang.  Finite Element Analysis for Bus Body Structure , 2006 .

[4]  Anupam Saxena,et al.  Topology design of large displacement compliant mechanisms with multiple materials and multiple output ports , 2005 .

[5]  Zhengjia He,et al.  Crack detection in a shaft by combination of wavelet-based elements and genetic algorithm , 2008 .

[6]  Melanie Mitchell,et al.  An introduction to genetic algorithms , 1996 .

[7]  M. M. K. Lee,et al.  Automotive box section design under torsion: Part 1: Finite element modelling strategy , 2000 .

[8]  L. Gil,et al.  Shape and cross-section optimisation of a truss structure , 2001 .

[9]  Maenghyo Cho,et al.  Optimization of laminates with free edges under bounded uncertainty subject to extension, bending and twisting , 2004 .

[10]  J. F. Durodola,et al.  Effects of design and adhesive modulus on the torsional stiffness of automotive structures , 2008 .

[11]  Masaki Saito,et al.  Development of aluminum body for the most fuel efficient vehicle , 2000 .

[12]  M Yu,et al.  Study on the dynamic characteristics of a virtual-axis hybrid polishing machine tool by flexible multibody dynamics , 2004 .

[13]  M. H. Kim,et al.  Development of an optimum design technique for the bus window pillar member , 2001 .

[14]  M. M. K. Lee,et al.  Automotive box section design under torsion Part 2: Behaviour and implications on weight reduction , 2000 .

[15]  H. Adeli,et al.  Concurrent genetic algorithms for optimization of large structures , 1994 .

[16]  H. J. Yim,et al.  OPTIMAL RELIABILITY DESIGN FOR THIN-WALLED BEAM OF VEHICLE STRUCTURE CONSIDERING VIBRATION , 2003 .

[17]  David E. Goldberg,et al.  Genetic Algorithms in Search Optimization and Machine Learning , 1988 .

[18]  Byung Gun Choi,et al.  Optimum Shape Design of Rotor Shafts Using Genetic Algorithm , 2000 .