Cab Topology Optimization Design Considering Fatigue Performance

被引：0
|
作者：
Gao Y. [1 ]
Zhang S. [1 ]
Yuan Z. [1 ]
机构：
[1] School of Automotive Studies, Tongji University, Shanghai
来源：
Qiche Gongcheng/Automotive Engineering | 2023年 / 45卷 / 03期
关键词：
bi-directional evolutionary structural optimization; cab; fatigue analysis; topology optimization;
D O I：
10.19562/j.chinasae.qcgc.2023.03.014
中图分类号：
学科分类号：
摘要：
For the failure of the cab of a heavy truck during the fatigue test on the bench，a bi-directional evolutionary structural optimization method（FA-BESO）aiming at maximizing the fatigue life is proposed in this paper. Firstly，the bench test of the cab is carried out to find the weak position of the cab fatigue. Furthermore，the sensitivity of the element low-cycle fatigue analysis is deduced，and this value is utilized as the basis for element deletion. The FA-BESO of the continuum structure is realized through the secondary development of the finite element software. Then，the effectiveness of FA-BESO is verified by a standard example. Finally，in order to improve the optimization efficiency，a simplified model of the beam frame for the cab is established，and it is verified that the simplified model has good predictability for the fatigue failure position. The FA-BESO is applied to the topology optimization of the A-pillar reinforcement plate considering fatigue performance，and the result shows that the fatigue life of the cab can be increased to 2 times compared with that before optimization，which verifies the feasibility of the FA-BESO to improve the fatigue life of the cab. © 2023 SAE-China. All rights reserved.
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页码：468 / 476and450
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