DU, Delei ;LI, Yana ;SONG, Jian ;HE, Zhengping ;XU, Jianxin . Two-stage optimal design of metro underframe structures based on topology-size-shape co-optimization methodology. Articles in Press, [S.l.], v. 0, n.0, p. , june 2025. ISSN 0039-2480. Available at: <https://www.sv-jme.eu/sl/article/two-stage-optimal-design-of-metro-underframe-structures-based-on-topology-size-shape-co-optimization-methodology/>. Date accessed: 15 sep. 2025. doi:http://dx.doi.org/.
Du, D., Li, Y., Song, J., He, Z., & Xu, J. (0). Two-stage optimal design of metro underframe structures based on topology-size-shape co-optimization methodology. Articles in Press, 0(0), . doi:http://dx.doi.org/
@article{.,
author = {Delei Du and Yana Li and Jian Song and Zhengping He and Jianxin Xu},
title = {Two-stage optimal design of metro underframe structures based on topology-size-shape co-optimization methodology},
journal = {Articles in Press},
volume = {0},
number = {0},
year = {0},
keywords = {Underframe; Structural optimization; Collaborative Optimization; Lightweighting; },
abstract = {The design of the metro body structure needs to take into account both safety and cost indicators. Underframe is the main component of the metro body load bearing, but also a large proportion of the mass of the component. In order to save the cost of metro operation and improve the safety performance of the metro body, this paper decides to optimize the design of the underframe section. In this paper, a two-stage optimal design is proposed based on the topology-size-shape optimization method. Firstly, the manufacturing constraints are established based on the variable density method, and the topology optimization of the bottom frame sub-model is carried out with the objective of minimizing the flexibility-weighted strain energy. Rough topology is then parametrically optimized after determining the approximate shape of the cross section, which in turn refines the model. The results show that using this optimization method can reduce the mass of the chassis by about 4.7% and the maximum deflection of the metro car body under the maximum vertical load case by 0.601 mm.},
issn = {0039-2480}, pages = {}, doi = {},
url = {https://www.sv-jme.eu/sl/article/two-stage-optimal-design-of-metro-underframe-structures-based-on-topology-size-shape-co-optimization-methodology/}
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Du, D.,Li, Y.,Song, J.,He, Z.,Xu, J. 0 June 0. Two-stage optimal design of metro underframe structures based on topology-size-shape co-optimization methodology. Articles in Press. [Online] 0:0
%A Du, Delei %A Li, Yana %A Song, Jian %A He, Zhengping %A Xu, Jianxin %D 0 %T Two-stage optimal design of metro underframe structures based on topology-size-shape co-optimization methodology %B 0 %9 Underframe; Structural optimization; Collaborative Optimization; Lightweighting; %! Two-stage optimal design of metro underframe structures based on topology-size-shape co-optimization methodology %K Underframe; Structural optimization; Collaborative Optimization; Lightweighting; %X The design of the metro body structure needs to take into account both safety and cost indicators. Underframe is the main component of the metro body load bearing, but also a large proportion of the mass of the component. In order to save the cost of metro operation and improve the safety performance of the metro body, this paper decides to optimize the design of the underframe section. In this paper, a two-stage optimal design is proposed based on the topology-size-shape optimization method. Firstly, the manufacturing constraints are established based on the variable density method, and the topology optimization of the bottom frame sub-model is carried out with the objective of minimizing the flexibility-weighted strain energy. Rough topology is then parametrically optimized after determining the approximate shape of the cross section, which in turn refines the model. The results show that using this optimization method can reduce the mass of the chassis by about 4.7% and the maximum deflection of the metro car body under the maximum vertical load case by 0.601 mm. %U https://www.sv-jme.eu/sl/article/two-stage-optimal-design-of-metro-underframe-structures-based-on-topology-size-shape-co-optimization-methodology/ %0 Journal Article %R %& %P 1 %J Articles in Press %V 0 %N 0 %@ 0039-2480 %8 2025-06-25 %7 2025-06-25
Du, Delei, Yana Li, Jian Song, Zhengping He, & Jianxin Xu. "Two-stage optimal design of metro underframe structures based on topology-size-shape co-optimization methodology." Articles in Press [Online], 0.0 (0): . Web. 15 Sep. 2025
TY - JOUR AU - Du, Delei AU - Li, Yana AU - Song, Jian AU - He, Zhengping AU - Xu, Jianxin PY - 0 TI - Two-stage optimal design of metro underframe structures based on topology-size-shape co-optimization methodology JF - Articles in Press DO - KW - Underframe; Structural optimization; Collaborative Optimization; Lightweighting; N2 - The design of the metro body structure needs to take into account both safety and cost indicators. Underframe is the main component of the metro body load bearing, but also a large proportion of the mass of the component. In order to save the cost of metro operation and improve the safety performance of the metro body, this paper decides to optimize the design of the underframe section. In this paper, a two-stage optimal design is proposed based on the topology-size-shape optimization method. Firstly, the manufacturing constraints are established based on the variable density method, and the topology optimization of the bottom frame sub-model is carried out with the objective of minimizing the flexibility-weighted strain energy. Rough topology is then parametrically optimized after determining the approximate shape of the cross section, which in turn refines the model. The results show that using this optimization method can reduce the mass of the chassis by about 4.7% and the maximum deflection of the metro car body under the maximum vertical load case by 0.601 mm. UR - https://www.sv-jme.eu/sl/article/two-stage-optimal-design-of-metro-underframe-structures-based-on-topology-size-shape-co-optimization-methodology/
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author = {Du, D., Li, Y., Song, J., He, Z., Xu, J.},
title = {Two-stage optimal design of metro underframe structures based on topology-size-shape co-optimization methodology},
journal = {Articles in Press},
volume = {0},
number = {0},
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TY - JOUR AU - Du, Delei AU - Li, Yana AU - Song, Jian AU - He, Zhengping AU - Xu, Jianxin PY - 2025/06/25 TI - Two-stage optimal design of metro underframe structures based on topology-size-shape co-optimization methodology JF - Articles in Press; Vol 0, No 0 (0): Articles in Press DO - KW - Underframe, Structural optimization, Collaborative Optimization, Lightweighting, N2 - The design of the metro body structure needs to take into account both safety and cost indicators. Underframe is the main component of the metro body load bearing, but also a large proportion of the mass of the component. In order to save the cost of metro operation and improve the safety performance of the metro body, this paper decides to optimize the design of the underframe section. In this paper, a two-stage optimal design is proposed based on the topology-size-shape optimization method. Firstly, the manufacturing constraints are established based on the variable density method, and the topology optimization of the bottom frame sub-model is carried out with the objective of minimizing the flexibility-weighted strain energy. Rough topology is then parametrically optimized after determining the approximate shape of the cross section, which in turn refines the model. The results show that using this optimization method can reduce the mass of the chassis by about 4.7% and the maximum deflection of the metro car body under the maximum vertical load case by 0.601 mm. UR - https://www.sv-jme.eu/sl/article/two-stage-optimal-design-of-metro-underframe-structures-based-on-topology-size-shape-co-optimization-methodology/
Du, Delei, Li, Yana, Song, Jian, He, Zhengping, AND Xu, Jianxin. "Two-stage optimal design of metro underframe structures based on topology-size-shape co-optimization methodology" Articles in Press [Online], Volume 0 Number 0 (25 June 2025)
Articles in Press
The design of the metro body structure needs to take into account both safety and cost indicators. Underframe is the main component of the metro body load bearing, but also a large proportion of the mass of the component. In order to save the cost of metro operation and improve the safety performance of the metro body, this paper decides to optimize the design of the underframe section. In this paper, a two-stage optimal design is proposed based on the topology-size-shape optimization method. Firstly, the manufacturing constraints are established based on the variable density method, and the topology optimization of the bottom frame sub-model is carried out with the objective of minimizing the flexibility-weighted strain energy. Rough topology is then parametrically optimized after determining the approximate shape of the cross section, which in turn refines the model. The results show that using this optimization method can reduce the mass of the chassis by about 4.7% and the maximum deflection of the metro car body under the maximum vertical load case by 0.601 mm.