Multi-objective Optimization of Walking Loader Frame Based on Kriging Model

XU Yongsen; XU Xuemeng; WANG Zhishan; LIU Quan; LI Yingpeng; WU Renhong

doi:10.19554/j.cnki.1001-3563.2025.11.028

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Packaging Engineering ›› 2025, Vol. 46 ›› Issue (11) : 257-266. DOI: 10.19554/j.cnki.1001-3563.2025.11.028

Green Packaging and Circular Economy

Multi-objective Optimization of Walking Loader Frame Based on Kriging Model

XU Yongsen, XU Xuemeng, WANG Zhishan, LIU Quan, LI Yingpeng, WU Renhong

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Abstract

Considering the mass redundancy problem of the walking loader frame for the train shed, the work aims to propose a multi-objective optimization method to realize the synergistic optimization of lightweight and structural mechanical performance. Based on the static analysis of two extreme working conditions, the key components were identified through sensitivity analysis, and the multi-objective response surfaces of geometric mass, first-order intrinsic frequency, maximum deformation and stress were constructed by the Kriging model and then optimized combined with the NSGA-II algorithm to obtain the optimal solution set of Pareto. Simulation analysis of the optimized frame revealed that the geometric mass was reduced by 22.93%, the maximum stress decreased by 9.5%, the first-order intrinsic frequency stabilized at 20 Hz, and the maximum deformation stabilized within 14 mm under the critical working conditions. This method can significantly reduce the geometric mass of the loader under the premise of ensuring the structural mechanical performance of the loader.

Key words

walking loader / Kriging model / sensitivity analysis / multi-objective optimization

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XU Yongsen, XU Xuemeng, WANG Zhishan, LIU Quan, LI Yingpeng, WU Renhong. Multi-objective Optimization of Walking Loader Frame Based on Kriging Model[J]. Packaging Engineering. 2025, 46(11): 257-266 https://doi.org/10.19554/j.cnki.1001-3563.2025.11.028

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