汽车工程 ›› 2021, Vol. 43 ›› Issue (1): 121-128.doi: 10.19562/j.chinasae.qcgc.2021.01.016
收稿日期:
2020-04-22
修回日期:
2020-08-06
出版日期:
2021-01-25
发布日期:
2021-02-03
通讯作者:
李慎华
E-mail:shli18@mails.jlu.edu.cn
基金资助:
Received:
2020-04-22
Revised:
2020-08-06
Online:
2021-01-25
Published:
2021-02-03
Contact:
Shenhua Li
E-mail:shli18@mails.jlu.edu.cn
摘要:
为提高白车身轻量化设计效率,提出了一种试验设计与PSI决策相结合的轻量化设计策略。首先对白车身基本静-动态性能和正撞安全性能进行有限元分析,并通过车辆正撞试验验证有限元模型的准确性。然后采用贡献度分析对白车身前端结构进行设计变量筛选。接着通过试验设计获得白车身前端结构轻量化备选解。最后采用PSI法对众多备选解进行多目标决策,获得最佳轻量化方案。结果表明,轻量化设计后,白车身前端结构质量减轻4.43 kg,轻量化率达7.23%,同时白车身性能均满足设计基线要求。
王登峰,李慎华. 基于试验设计与PSI决策相结合的白车身前端结构轻量化设计[J]. 汽车工程, 2021, 43(1): 121-128.
Dengfeng Wang,Shenhua Li. Lightweight Design for the Front⁃end Structure of BIW Based on the Combination of the Design of Experiment and PSI Decision Tool[J]. Automotive Engineering, 2021, 43(1): 121-128.
表5
试验设计矩阵 (mm)"
序号 | T1 | T5 | T6 | T10 | T11 | T12 | … | T24 | T25 | T26 |
---|---|---|---|---|---|---|---|---|---|---|
1 | 0.96 | 1.62 | 2.08 | 1.38 | 1.26 | 1.10 | … | 1.06 | 1.41 | 0.70 |
2 | 0.97 | 1.71 | 2.53 | 1.30 | 1.52 | 1.32 | … | 1.10 | 1.47 | 0.71 |
3 | 0.98 | 1.31 | 2.64 | 1.59 | 1.27 | 1.49 | … | 1.13 | 1.50 | 0.72 |
4 | 0.98 | 1.67 | 1.79 | 1.68 | 1.34 | 1.54 | … | 1.14 | 1.52 | 0.72 |
5 | 0.98 | 1.49 | 2.12 | 1.32 | 1.40 | 1.60 | … | 1.15 | 1.53 | 0.73 |
? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? |
95 | 1.24 | 1.93 | 2.47 | 1.74 | 1.23 | 1.59 | … | 1.06 | 2.16 | 0.84 |
? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? |
118 | 1.31 | 1.38 | 2.26 | 1.65 | 1.27 | 1.33 | … | 1.36 | 1.74 | 0.74 |
119 | 1.32 | 1.74 | 2.59 | 1.74 | 1.33 | 1.39 | … | 1.37 | 1.75 | 0.74 |
120 | 1.32 | 1.56 | 2.04 | 1.28 | 1.40 | 1.44 | … | 1.38 | 1.77 | 0.74 |
表6
试验设计结果"
序号 | M/kg | fT/Hz | fB/Hz | ST/(N·m·(°)-1) | SB/(N·mm-1) | DFmax/mm | DDmax/mm | ACC/g |
---|---|---|---|---|---|---|---|---|
1 | 49.81 | 38.64 | 50.33 | 20 229.16 | 16 367.14 | 170.16 | 6.54 | 49.02 |
2 | 52.71 | 38.64 | 50.66 | 21 577.32 | 16 924.52 | 167.44 | 4.97 | 40.95 |
3 | 53.55 | 38.66 | 50.85 | 22 018.81 | 17 028.19 | 144.67 | 6.34 | 46.29 |
4 | 54.19 | 38.65 | 50.96 | 19 914.73 | 16 207.94 | 135.48 | 4.98 | 40.54 |
5 | 54.22 | 38.64 | 50.73 | 20 868.06 | 16 621.84 | 155.47 | 4.73 | 47.03 |
? | ? | ? | ? | ? | ? | ? | ? | ? |
95 | 56.86 | 38.69 | 50.68 | 22 541.35 | 17 010.02 | 112.99 | 3.55 | 44.33 |
? | ? | ? | ? | ? | ? | ? | ? | ? |
118 | 56.00 | 38.71 | 51.61 | 21 820.94 | 17 071.86 | 141.17 | 5.83 | 52.34 |
119 | 57.62 | 38.71 | 51.72 | 22 695.66 | 17 457.93 | 136.13 | 5.67 | 41.73 |
120 | 56.76 | 38.69 | 51.39 | 21 175.58 | 16 846.08 | 117.43 | 4.10 | 45.50 |
表7
PSI决策结果"
序号 | 试验设计结果归一化处理 | Pi | 排序 | |||||||
---|---|---|---|---|---|---|---|---|---|---|
M | fT | fB | ST | SB | DFmax | DDmax | ACC | |||
1 | 1.000 0 | 0.997 8 | 0.973 1 | 0.877 3 | 0.931 3 | 0.625 2 | 0.510 6 | 0.674 6 | 0.819 8 | 110 |
2 | 0.945 0 | 0.998 1 | 0.979 4 | 0.935 7 | 0.963 0 | 0.635 3 | 0.672 1 | 0.807 6 | 0.864 0 | 55 |
3 | 0.930 0 | 0.998 5 | 0.983 1 | 0.954 9 | 0.968 9 | 0.735 3 | 0.526 7 | 0.714 4 | 0.839 0 | 79 |
4 | 0.919 1 | 0.998 1 | 0.985 2 | 0.863 6 | 0.922 2 | 0.785 2 | 0.670 3 | 0.815 7 | 0.857 6 | 60 |
5 | 0.918 6 | 0.997 9 | 0.980 8 | 0.905 0 | 0.945 8 | 0.684 2 | 0.706 0 | 0.703 2 | 0.865 4 | 53 |
? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? |
95 | 0.876 0 | 0.999 3 | 0.979 9 | 0.977 5 | 0.967 9 | 0.941 5 | 0.939 9 | 0.746 0 | 0.945 3 | 1 |
? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? |
118 | 0.889 4 | 0.999 6 | 0.997 8 | 0.946 3 | 0.971 4 | 0.753 6 | 0.572 6 | 0.631 8 | 0.846 8 | 72 |
119 | 0.864 4 | 0.999 7 | 1.000 0 | 0.984 2 | 0.993 4 | 0.781 4 | 0.588 8 | 0.792 5 | 0.858 3 | 58 |
120 | 0.877 5 | 0.999 1 | 0.993 6 | 0.918 3 | 0.958 5 | 0.905 9 | 0.815 2 | 0.726 8 | 0.907 3 | 25 |
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