动力集中动车组车体司机室结构优化设计

柳占宇; 于德壮; 杨帆; 李冬园; 张威; 张昭

doi:10.13433/j.cnki.1003-8728.20220195

动力集中动车组车体司机室结构优化设计

doi: 10.13433/j.cnki.1003-8728.20220195

柳占宇^1,,
于德壮¹,
杨帆¹,
李冬园¹,
张威²,
张昭^2, ,

1.
中车大连机车车辆有限公司辽宁大连　116022
2.
大连理工大学工程力学系，辽宁大连　116024

基金项目: 辽宁省自然科学基金项目(2019-KF-05-07)

详细信息

作者简介:
柳占宇，教授级高级工程师，liuzhanyu_dl@crrcgc.cc

通讯作者:
张昭，教授，博士生导师，zhangz@dlut.edu.cn

中图分类号: U271
计量
- 文章访问数: 55
- HTML全文浏览量: 17
- PDF下载量: 11
- 被引次数: 0
出版历程
- 收稿日期: 2021-10-09
- 网络出版日期: 2024-03-08
- 刊出日期: 2024-02-01

Optimization Design of Cab Structure in Power Concentrated EMU

1.
CRRC Dalian Co., Ltd., Dalian 116022, Liaoning, China
2.
Department of Engineering Mechanics, Dalian University of Technology, Dalian 116024, Liaoning, China

摘要

摘要: 动力集中动车组司机室结构对保证司机人员安全有重要作用，在确保结构安全的基础上，设置合理的传力路径进行结构补强，可以实现碰撞工况下的司机室角柱和防撞柱及相关结构的轻量化，对高速重载要求下的动机集中动车组设计有重要意义。采用拓扑优化方法对某型动力集中动车组车体司机室结构进行拓扑优化设计，寻求角柱和防撞柱的最优布局，以此为基础，重构司机室结构并进行尺寸优化。计算结果表明，通过拓扑优化和几何尺寸优化的一体化设计，在满足原始设计结构的设计强度的条件下，基于拓扑构型所设计的司机室结构重量明显减小，其中重构的防撞柱构型和重构的角柱构型总重量相对于初始设计减重67.5%，减重效果明显。
- 动力集中动车组 /
- 拓扑优化 /
- 尺寸优化 /
- 防撞柱 /
- 角柱
Abstract: The cab structure takes the key role for the safety of driver inthe powder concentrated EMU. The structural strengthening by the design of reasonable load paths can be used for the structural weight reduction of the corner and collision pillars in the load case of collision under the condition of structural safety. This can be meaningful for designing the power concentrated EMU with heavy load and high speed. The topological optimization was used for the topology design of the cab structure in the power concentrated EMU, in which the distributions of the corner and collision pillars can be obtained. Based on the obtained re-generated structures, the geometrical size optimization is further used. Results indicate that the weight of the cab structure can be obviously reduced by integratingthe topological and geometrical optimizations under the condition of structural safety. In comparison with the initial design, the weight of the cab structure can be obviously reduced. All the weight of the new corner pillar andcollision pillar can be reduced by up to 67.5%. The weight of cab can be obviously reduced by the present integrating topological and geometrical optimization method.
- power concentrated EMU /
- topological optimization /
- size optimization /
- collision pillar /
- corner pillar

HTML全文

图 1 动力集中车车体有限元模型

Figure 1. Finite element model of power concentrated EMU body

下载: 全尺寸图片幻灯片

图 2 动车防撞柱和角柱设计域

Figure 2. Design domains of collision and corner pillars of a power vehicle

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图 3 防撞柱和角柱传力路径

Figure 3. Load paths of collision and corner pillars

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图 4 通过拓扑优化重构的防撞柱

Figure 4. Re-built collision pillar after topological optimization

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图 5 拓扑优化前后角柱几何形貌对比

Figure 5. Comparison of geometrical shape of corner pillar before and after topological optimization

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图 6 碰撞工况下重构防撞柱应力云图

Figure 6. Stress cloud map of re-built collision pillars in collision

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图 7 碰撞工况下重构司机室角柱应力云图

Figure 7. Stress cloud map of re-built corner pillars in collision of driver's room

下载: 全尺寸图片幻灯片

图 8 重构防撞柱和角柱疲劳计算节点选取示意图

Figure 8. Selected nodes for computing the fatigue of re-built collision and corner pillars

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表 1 疲劳载荷工况列表

Table 1. Fatigue load conditions

工况	纵向加速度/g	垂向加速度/g	横向加速度/g
1	0.15	−0.75	0.2
2	−0.15	−0.75	0.2
3	0.15	−0.75	−0.2
4	−0.15	−0.75	−0.2
5	0.15	−1.25	0.2
6	−0.15	−1.25	0.2
7	0.15	−1.25	−0.2
8	−0.15	−1.25	−0.2

下载: 导出CSV

表 3 疲劳载荷工况作用下节点第三主应力值

Table 3. The third principal stress of node in different fatigue load conditions MPa

工况	节点
工况	6643301	6642710	6632435	6620904	6625635
1	1.25	−1.70	−0.78	1.12	1.50
2	1.05	−1.60	−0.83	1.11	1.30
3	1.69	−1.81	−0.88	1.33	2.26
4	1.48	−1.71	−0.92	1.34	2.07
5	2.17	−2.83	−1.34	1.93	2.69
6	1.97	−2.74	−1.39	1.93	2.49
7	2.60	−2.94	−1.44	2.15	3.45
8	2.39	−2.85	−1.49	2.16	3.26

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表 2 疲劳载荷工况作用下节点第一主应力值

Table 2. The first principal stress of node in different fatigue load conditions MPa

工况	节点
工况	6643301	6642710	6632435	6620904	6625635
1	6.94	5.62	7.12	3.38	4.82
2	6.03	5.18	6.68	3.34	4.50
3	9.96	6.87	8.82	3.02	6.21
4	9.07	6.43	8.29	2.98	5.88
5	12.26	9.63	12.36	5.43	8.39
6	11.36	9.20	11.84	5.40	8.07
7	15.29	10.88	13.98	5.12	9.77
8	14.40	10.44	13.46	5.08	9.45

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表 4 节点的应力范围

Table 4. Stress domains of nodes

节点	最大值/MPa	最小值/MPa	应力范围/MPa
6643301	15.29	1.05	14.24
6642710	10.88	−2.94	13.82
6632435	13.98	−1.49	15.47
6620904	5.43	1.11	4.32
6625635	9.77	1.30	8.47

下载: 导出CSV

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