Lightening design of carbody structure for heavy haul gondola

YAO Shu-guang; TIAN Hong-qi; XU Ping

doi:10.19818/j.cnki.1671-1637.2011.01.006

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YAO Shu-guang, TIAN Hong-qi, XU Ping. Lightening design of carbody structure for heavy haul gondola[J]. Journal of Traffic and Transportation Engineering, 2011, 11(1): 31-35. doi: 10.19818/j.cnki.1671-1637.2011.01.006

Citation:

YAO Shu-guang, TIAN Hong-qi, XU Ping. Lightening design of carbody structure for heavy haul gondola[J]. Journal of Traffic and Transportation Engineering, 2011, 11(1): 31-35. doi: 10.19818/j.cnki.1671-1637.2011.01.006

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Lightening design of carbody structure for heavy haul gondola

doi: 10.19818/j.cnki.1671-1637.2011.01.006

YAO Shu-guang^{1, 2
,},
TIAN Hong-qi^{1, 2},
XU Ping^{1, 2}

1.
School of Traffic and Transportation Engineering, Central South University, Changsha 410075, Hunan, China
2.
Key Laboratory for Track Traffic Safety of Ministry of Education, Central South University, Changsha 410075, Hunan, China

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Author Bio:
YAO Shu-guang(1970-), female, associate professor, PhD, +86-731-82655294, ysgxzx@163.com
Received Date: 2010-11-13
Publish Date: 2011-02-25

Abstract

Abstract

The bearing structure mass of carbody was taken as objective function, the component thicknesses were taken as design variables, the structure stresses and deformations from key load cases were taken as constraint conditions, and an optimization mathematic model of carbody bearing structure for ore gondola with axle load 40 t was established. A new unconstrained objective function was set up via penalty function against constrain, the searching direction was decided according to conjugate gradient method, and the objective function was approximated by using least squares technique. Using parametric design language APDL, the iteration computation of mass minimization for carbody was performed based on the second development platform of FEA software ANSYS. Analysis result indicates that the 1/4 mass of carbody structure reduces from 1.939 5 t to 1.760 7 t, the relative mass loss rate is about 9.22%, the ratio of lighting mass to loading capacity is 0.16, and its strength and stiffness still meet the corresponding standard and design specification requirement.
- vehicle engineering,
- heavy haul gondola,
- structure optimization,
- penalty function,
- conjugate gradient method

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References(16)

References

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