Abstract
Due to the discreteness of material variables and nonlinearity of material plastic segment, the material-structure matching design efficiency of multiple parts is very low, and it is even difficult to achieve a feasible solution. To solve these problems, a performance-driven lightweight optimization method that combines multi-material selection method and multi-objective optimization is proposed. First, a lightweight multi-material selection method for the cab is proposed, which integrates static stiffness constraint, equivalent crashworthiness, and evaluation method for material selection. Subsequently, the multi-material selection designs for the skeleton beam of cab are carried out. The results show that the material selection scheme achieved a mass reduction of 12.41 kg and material cost reduction of 0.861 yuan. Finally, a multi-objective optimization method incorporating TOPSIS method is used to solve material-structure coupling design. The results show that the mass of cab is reduced by 47.4 kg. The performance of cab are slightly changed, indicating the rationality of the lightweight design method.
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Funding
This work was supported by the National Key Research and Development project of China (Number 2022YFB2503501), National Natural Science Foundation of China (Grant Number 51975244), and Graduate Innovation Fund of Jilin University (Number 101832020CX131).
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**e, C., Wang, D., Wang, S. et al. A performance-driven lightweight optimization method for material-structure coupling design of cab. Struct Multidisc Optim 67, 12 (2024). https://doi.org/10.1007/s00158-023-03730-6
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DOI: https://doi.org/10.1007/s00158-023-03730-6