Lightweight design for the aluminum alloy-carbon fiber hybrid structure of the EMU car body.
- Resource Type
- Article
- Authors
- Shangguan, Yiming; Wang, Wenjing; He, Anrui; Ma, Wenjun; Tian, Honglei
- Source
- Journal of Mechanical Science & Technology. Dec2023, Vol. 37 Issue 12, p6441-6452. 12p.
- Subject
- *ELECTRIC multiple units
*ALUMINUM composites
*LIGHTWEIGHT materials
*ALUMINUM
*MODULAR design
*STRUCTURAL optimization
- Language
- ISSN
- 1738-494X
This paper presents an innovative electric multiple unit (EMU) car body lightweight design approach that integrates structural and material optimizations. The structural lightweight design was carried out by using a sub-frame-based method and the non-dominated genetic algorithm II. The plate thicknesses of 28 car body components were chosen as the optimization design variable. The lightweight material design was realized by replacing the aluminum alloy with composite material. The two-dimensional Hashin criterion was used to analyze and validate the strength of the composite driver's cab. Results show that after size optimization, the structure weight of the vehicle was reduced from 10964 kg to 8661 kg, which was 21.01 % less than the initial configuration. This modular lightweight design strategy for EMU car body optimization offers valuable insights that could be taken into account in future EMU car body designs. [ABSTRACT FROM AUTHOR]