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The anti-fatigue lightweight design of heavy tractor frame based on a modified decision method

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Abstract

This paper proposes a modified preference selection index (MPSI) to improve the efficiency and reliability of the multi-criteria decision-making process. MPSI absorbs the high efficiency of the preference selection index (PSI) and enhances the anti-interference ability of some performance indicators. Moreover, a lightweight optimization method based on multi-performance is proposed, combining Hammersley, the radial basis function neural networks-response surface method (RBFNN-RSM), and the non-dominated sorting genetic algorithm-II (NSGA-II) and MPSI. First, the finite element model and rigid-flexible coupled virtual prototype model are established and verified and the fatigue life of the original frame is calculated. Second, the size and shape of the frame were taken as variables, and the mass, root mean square stress, and life were taken as objectives. The experimental scheme is determined, and the RBFNN-RSM hybrid surrogate model and NSGA-II are used to find the optimal solution set. Finally, the optimal solution is determined using the PSI, principal component analysis-gray relational analysis (P-GRA), and MPSI. The results show that MPSI has higher reliability than PSI; the MPSI has higher efficiency than P-GRA.

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Abbreviations

QSM:

Quasi-static method

PCA:

Principal component analysis

TDVM:

Time-domain vibration method

MPSI:

Modified preference selection index

FDVM:

Frequency-domain vibration method

FEM:

Finite element model

MOOP:

Multi-objective optimization problem

RF-VPM:

Rigid-flexible coupled virtual prototype model

MCDM:

Multi-criteria decision-making

PSD:

Power spectral density

ANN:

Artificial neutral network

FRF:

Frequency response function

RSM:

Response surface method

GRG:

Gray relational grade

RBFNN:

Radial basis function neural networks

LSS:

Leaf spring suspension

SVM:

Support vector machine

ASS:

Air spring suspension

MOACO:

Multi-objective ant colony optimization

DOFs:

Degrees of freedom

MOPSOs:

Multi-objective particle swarm optimizers

UTS:

Ultimate tensile strength

NSGA:

Non-dominated sorting genetic algorithm

RMS:

Root mean square

GRA:

Gray relational analysis

DOE:

Design of experiment

PSI:

Preference selection index

PC:

Principal component

TOPSIS:

Technique for order of preference by similarity to ideal solution

P-GRA:

Principal component analysis-gray relational analysis

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Funding

This work was supported by the [National Natural Science Foundation of China] under Grant [Number 51975244].

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Correspondence to Dengfeng Wang.

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The authors declare that there is no conflict of interest in this work.

Replication of results

The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.

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Responsible Editor: Mehmet Polat Saka

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Zhang, X., Wang, D., Kong, D. et al. The anti-fatigue lightweight design of heavy tractor frame based on a modified decision method. Struct Multidisc Optim 65, 280 (2022). https://doi.org/10.1007/s00158-022-03385-9

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  • DOI: https://doi.org/10.1007/s00158-022-03385-9

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