Multi-objective optimization of crash box filled with three-dimensional cellular structure under multi-angle impact loading

Ma, Fangwu; Liang, Hui; Pu, Yongfeng; Wang, Qiang; Zhao, Ying

doi:10.1177/0954407021998174

Cited by 24 publications

(4 citation statements)

References 45 publications

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“…Multi-objective optimization design often has non-convex optimization problems, 26 that is, the decline of one target will bring the growth of another target, and it brings difficulties to obtain the overall optimal solution. 3,20,27 Therefore, the minimum compliance as the objective is adapted to six load cases according to the weight ratios based on compromise programming method. 28 C k…”

Section: Design Methodologymentioning

confidence: 99%

“…The cross section of profiles is designed the same as Section 4.1 using topology optimization under multiple load cases to obtain load paths. 27,47 The weight of each load case is determined by the load-bearing and energy-absorbing capacity the component. Taking crash box as an example, the main function of the crash box is crush deformation and energy absorption in frontal collision.…”

Section: Body Frame Structure Designmentioning

confidence: 99%

See 1 more Smart Citation

Electric vehicles body frame structure design method: An approach to design electric vehicle body structure based on battery arrangement

Chen

Wang

Zhao

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part D:

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Although the electric vehicles (EVs) have become the main development of the automotive industry, there is still very limited knowledge about the design method of EVs’ body structure. This paper substantially increases this limited knowledge by developing an EV’s aluminum alloy body frame structure design (EVFD) method based on battery arrangements. The main concept of the EVFD approach is the development of the parametric knowledge base to facilitate performance driven design of body structure in concept design stage, including the battery sub-libraries designed by vehicle power performances and the modular body frame structure sub-libraries and cross section of profile sub-libraries designed by structure performances. The layout of vehicle is firstly determined based on battery volume which calculated on the basis of power performance of EVs. And then, the body frame structures are designed by multi-load topology optimization and multi-objective parametric optimization based on the body structure performance, considering the battery layout and its mass distribution. The developed body structure knowledge base is screened through comparing their structural mechanical properties. The feasibility and accuracy of selected EV’s aluminum alloy body frame structure is verified by experiment. In this paper, the case study demonstrates that the proposed EVFD method based on battery arrangement can be effectively used to design aluminum alloy body frame structure of EVs, which provides a reference to other EV’s body structure design. Due to the performance driven design concept employed, the designed body structure for EV meets the requirements of lightweight, dynamic performance, and structural mechanical properties.

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Section: Design Methodologymentioning

confidence: 99%

Section: Body Frame Structure Designmentioning

confidence: 99%

Electric vehicles body frame structure design method: An approach to design electric vehicle body structure based on battery arrangement

Chen

Wang

Zhao

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part D:

View full text Add to dashboard Cite

show abstract

“…Negative Poisson's ratio structure, a special kind of lightweight honeycomb structure, exhibits superior performance [5]. Examples of its performance benefits include fracture resistance [6,7], penetration resistance [8], shear resistance [9,10], vibration and acoustic isolation properties [11,12], surface co-orientation [13], permeability variability [14], energy absorption properties, and impact resistance [15,16]. These characteristics makes these structures highly promising for a wide range of applications in aerospace, marine, mechanical automation, biomedical, defense and military, and textile industries.…”

Section: Introductionmentioning

confidence: 99%

Research on Impact Resistance of Aluminum Alloy New Rotating Thin-Walled Structures

Xu,

Chen,

Qin

et al. 2023

Biomimetics

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Honeycomb structures are widely used in the field of impact resistance and are constantly being developed and updated. In this paper, the design of three new aluminum alloy rotating thin-walled structures (NRTS) are examined. These structures combine common concave structures and rotating, rigid-body structures. The purpose of this study is to solve the problem of the poor energy absorption capacity of rotating, rigid-body structure due to small deformation and to provide a reference for honeycomb mechanism designs. The Young’s modulus, the critical velocity, and the platform stress of the NRTS structure are derived from theoretical analysis. The dynamic response of the NRTS structure at different impact velocities is investigated using finite element simulation software. The results show that the rotating, thin-walled recessed honeycomb (RTRH) increases the plateau stress by 124% and 51% as compared to rotating, thin-walled square tubes (RTSTs) and the re-entrant hexagonal structure (RH), respectively; the rotating, thin-walled quadruple-arc honeycomb structure (RTQH) increases the SEA by 21% and 20% as compared to the RTST and RH, respectively; and the rotating thin-walled double-arc honeycomb structure (RTDH) increases the CEF by 54% and 51% as compared to the RTST and RH, respectively. During the study, it was demonstrated that NTRS also exhibits good energy absorption capacity. Then, the effect of rotation angle on the energy absorption performance was analyzed. The cell and wall thickness of the NTRS structure were optimized according to the gradient theory. It was proved that the gradient optimized structure has better energy absorption performance as compared to the uniform structure.

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“…Firstly, the mechanical properties of metal pipes with various geometric characteristics are quite different. 10,11 The crushing performance of thin-walled tubes manufactured by different design methods such as multi-cell, multi-corner, edge-junctions, and stiffener can be greatly improved. 12 In particular, the introduction of stiffeners into structural design shows that the impact resistance of the structure has been significantly improved by comparing the reinforced and non reinforced structures.…”

Section: Introductionmentioning

confidence: 99%

Numerical study on energy absorption characteristics of bio-mimetic multi-cell thin-walled structures with different hierarchy

Hao

Liu

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part D:

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Horsetail plant is the most primitive terrestrial plant bred by spores. After hundreds of millions of years of evolution, the internal structure of horsetail plant stem is composed of multiple cavity which brings excellent impact resistance. The investigation of the internal thin-walled structure of horsetail plant can be used to improve the energy absorption property of the existing thin-walled structure, and has important significance and application potential for the design of anti-collision structure. In this study, four kinds of bio-mimetic thin-walled models with different shapes of cross-sections were proposed and established based on the horsetail plants, and the energy absorption values of the structures were calculated and analyzed by numerical method. The squ-3rd structure with the highest specific energy absorption value of 49.121 kJ/kg was obtained. Then the specific energy absorption value and crushing force efficiency of the structure under different parameters, including wall thickness, side length height ratio, and impact angle were calculated and discussed. Based on the numerical simulation results, we found that for the third-order form of structure with square cross-section, the structure with the wall thickness between 1 and 1.25 mm showed better crushing resistance. And, the energy absorption characteristics of the structure were found to have better performance when the side length height ratio is 1:1.

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Multi-objective optimization of crash box filled with three-dimensional cellular structure under multi-angle impact loading

Cited by 24 publications

References 45 publications

Electric vehicles body frame structure design method: An approach to design electric vehicle body structure based on battery arrangement

Electric vehicles body frame structure design method: An approach to design electric vehicle body structure based on battery arrangement

Research on Impact Resistance of Aluminum Alloy New Rotating Thin-Walled Structures

Numerical study on energy absorption characteristics of bio-mimetic multi-cell thin-walled structures with different hierarchy

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