重载敞车车体结构轻量化设计

姚曙光; 田红旗; 许平

doi:10.19818/j.cnki.1671-1637.2011.01.006

重载敞车车体结构轻量化设计

doi: 10.19818/j.cnki.1671-1637.2011.01.006

姚曙光^{1, 2,},
田红旗^{1, 2},
许平^{1, 2}

1.
中南大学交通运输工程学院，湖南长沙 410075
2.
中南大学轨道交通安全教育部重点实验室，湖南长沙 41007

基金项目:

铁道部科技研究开发计划项目 Z2007-079

铁道部科技研究开发计划项目 Z2008-031

详细信息

作者简介:
姚曙光（1970-），女，湖南邵阳人，中南大学副教授，工学博士，从事列车结构设计研究

中图分类号: U270.11
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- 被引次数: 0
出版历程
- 收稿日期: 2010-11-13
- 刊出日期: 2011-02-25

Lightening design of carbody structure for heavy haul gondola

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

More Information

Author Bio:
YAO Shu-guang(1970-), female, associate professor, PhD, +86-731-82655294, ysgxzx@163.com

摘要

摘要: 以车体承载结构的质量为目标函数, 以部件板厚为设计变量, 以关键工况载荷下车体结构的应力与挠度为约束条件, 建立轴载40 t矿石敞车车体承载结构的优化设计数学模型。引入约束违反惩罚项构造新的无约束目标函数, 用共轭梯度法确定探索方向, 用最小二乘法逼近目标函数。在有限元分析软件ANSYS的二次开发平台上, 运用参数化设计语言APDL, 进行车体承载结构质量极小化的迭代计算。分析结果表明: 1/4车体承载结构的质量由1.939 5 t减小到1.760 7 t, 减轻约为9.22%, 车辆自重系数达到0.16, 减轻后车体结构强度和刚度仍满足相关规范与设计要求。
- 车辆工程 /
- 重载敞车 /
- 结构优化 /
- 惩罚函数 /
- 共轭梯度法
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

HTML全文

图 1 1/4敞车车体结构有限元模型

Figure 1. Finite element model of 1/4 gondola carbody structure

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图 2 车体结构的质量迭代历程

Figure 2. Iteration courses of carbody structure mass

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表 1 状态变量的迭代历程

Table 1. Optimization courses of state variables

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表 2 设计变量的优化结果

Table 2. Optimization values of design variables

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