Research on carbon fiber–reinforced plastic bumper beam subjected to low-velocity frontal impact

Hu, Yefa; Liu, Can; Zhang, Jinguang; Ding, Guoping; Wu, Qiong

doi:10.1177/1687814015589458

Cited by 31 publications

(10 citation statements)

References 9 publications

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“…But this does not mean that a beam with a smaller thickness is better because the stress on the beam increases with the use of less thickness. erefore, from the above results, and literature observations it can be concluded that neither a beam with less thickness nor one with higher thickness is better; instead, it depends on the application it is required for [21]. e main purpose of this investigation is to select a lightweight side bumper beam without sacrificing the impact behavior.…”

Section: Impact Forcementioning

confidence: 84%

Analysis of Three-Wheeler Vehicle Structure at the Event of Side Pole Crash

Hambissa

Nallamothu

Andarge

2022

Journal of Engineering

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This work reports on the simulation of three-wheel vehicles in the event of a side pole crash. In this study, the dynamic characteristics of the three-wheeler vehicle during pole collision were studied using finite elements. The TWV model used here was created using CATIA v5 and simulated using LS-DYNA which is widely used by the automotive industry to analyze vehicle design and predict a car’s behavior in a collision. Moreover, in this study, the finite element model of the side hybrid 5th percentile male dummy was developed for studying the driver and occupant responses in crash events of side pole. Based on the analysis results obtained from the existing model of TWV, modifications were made on the side structure by means of adding energy-absorbing components. Then, the modified TWV was analyzed under the same condition as the existing one. The result of the simulations shows that with the modification, 80 mm more living space, 630 N reduction of impact force, and 0.8 kJ of additional absorbed energy were obtained. So with the modified model, the safety and crashworthiness of the TWV were greatly improved during side collision without affecting the appearance and weight of the existing models.

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Section: Impact Forcementioning

confidence: 84%

Analysis of Three-Wheeler Vehicle Structure at the Event of Side Pole Crash

Hambissa

Nallamothu

Andarge

2022

Journal of Engineering

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“…The À 121:7r 2 3 + 40:5r 2 4 + 31:2x 1 x 2 À 19:5x 1 x 3 À 51:7x 1 r 1 À 52:6x 2 x 3 À 70:3x 2 r 1 + 85:8x 2 r 2 À 39:2x 2 r 3 À 59:3x 2 r 4 À 44:1x 3 r 1 À 17:3x 3 r 2 + 129:2x 3 r 3 + 84:6x 3 r 4 + 165:2r 1 r 2 + 44:5r 1 r 3 À 168:2r 1 r 4 + 132:8r 2 r 3 + 23:3r 2 r 4 À 350:0r 3 r 4 ðA:4Þ F multiÀmat = 64:6 À 204:5x 1 À 310:7x 2 + 94:7x 3 + 2155:4r 1 À 382:9r 2 À 335:1r 4 + 106:1x 2 1 + 358:8x 2 2 + 26:3x 2 3 À 797:4r 2 1 À 820:7r 2 2 + 129:6r 2 3 + 214:7r 2 4 À 30:4x 1 x 2 À 80:0x 1 x 3 À 344:4x 1 r 1 À 428:9x 1 r 2 + 180:6x 1 r 3 + 455:2x 1 r 4 À 194:9x 2 x 3 À 97:5x 2 r 1 + 24:9x 2 r 2 À 358:5x 2 r 3 + 394:0x 2 r 4 À 27:5x 3 r 4 + 142:3x 3 r 3 + 318:5x 3 r 4 + 3146:9r 1 r 2 À 565:0r 1 r 3 À 2399:5r 1 r 4 + 770:9r 2 r 3 À 638:8r 2 r 4 À 832:3r 3 r 4 ðA:5Þ L multiÀmat = 454:5 À 456:5x 1 À 313:2x 2 À 29:3x 3 + 2975:6r 1 À 999:3r 2 À 173:4r 3 + 131:4r 4 + 249:4x 2 1 + 435:3x 2 2 + 46:9x 2 3 À 593:0r 2 1 À 1218:3r 2 2 À 1242:7r 2 3 + 480:5r 2 4 + 171:9x 1 x 2 À 198:6x 1 x 3 À 733:9x 1 r 1 À 638:3x 1 r 2 + 210:4x 1 r 3 + 540:0x 1 r 4 À 426:3x 2 x 3 À 331:2x 2 r 1 + 584:0x 2 r 2 À 698:2x 2 r 3 + 66:4x 2 r 4 À 179:8x 3 r 1 À 137:0x 3 r 2 + 945:4x 3 r 3 + 707:2x 3 r 4 + 3453:5r 1 r 2 + 330:8r 1 r 3 À 3492:7r 1 r 4 + 2237:6r 2 r 3 À 432:0r 2 r 4 À 2631:2r 3 r 4 ðA:6Þ…”

Section: Declaration Of Conflicting Interestsunclassified

“…Wang and Li 1 conducted design and analysis of automotive carbon fiber composite bumper beam based on finite element analysis (FEA). Hu et al 2 made a research on carbon fiber-reinforced plastic bumper beam subjected to low-speed frontal impact. Michael et al 3 studied the expanded polypropylene foam energy management for bumper system.…”

Section: Introductionmentioning

confidence: 99%

Crashworthiness and lightweight optimization to applied multiple materials and foam-filled front end structure of auto-body

Zhao

et al. 2017

Advances in Mechanical Engineering

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Auto-body's front end structure, such as bumper and crash box, has the vital function of protecting other components from damage during low-velocity collision; moreover, it should accomplish excellent lightweight effect under the insurance of crashworthiness. This article combined the two approaches of lightweight improvement that listed as using structural optimization and replacing original materials with high strength and high mass efficiency materials or employing reinforced materials to conduct the crashworthiness optimization of assembly of bumper, crash box, and front rail. The original materials of bumper, crash box, and front rail were replaced by aluminum alloy 6060, TRIP800, and DP800, respectively. Aluminum foam was filled in bumper to replace the original reinforced plate and also was filled in crash box to increase energy absorption. The comparisons were made between an optimal selection from the multiple materials designs and the single material design. During optimization, crashworthiness criteria were defined as constraint conditions, and response surface surrogate model and genetic algorithm with elite strategy were employed to solve mathematical model of minimum mass. In single material optimization, the result already achieved the energy absorption increased by 10.1%, the peak collision force and the crumple distance decreased by 11.1% and 12.6%, respectively, and the total mass decreased by 11.1%. As for multiple materials optimization, the results obtained further optimal values. It is found that foam-filled bumper can overcome the disadvantage of bumper mid-bending that causes bumper failure of load bearing, and foam filler has the interaction effect with crash box as well, through which it received a significant growth of energy absorption. The application of multiple materials design greatly expands the potential of crashworthiness and lightweight optimization.

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“…Nowadays, a lot of studies have been done on the beam or the crash box by novel material structure [2][3][4][5][6][7] or the optimization design [8][9][10] or structure improvement of the shape, thickness, section structure, [11][12][13][14] etc. 15,16 These researches mainly focus on the low-speed crashworthiness, which can make the bumper system possess enough stiffness and strength so as to protect the body parts and occupants in the car collision. But for the pedestrians, too large bumper stiffness is bound to increase the damage degree of the pedestrian lower leg in the collision accident.…”

Section: Introductionmentioning

confidence: 99%

Reliability optimization of a novel negative Poisson’s ratio forepart for pedestrian protection

Wang

Zhao

et al. 2017

Proceedings of the Institution of Mechanical Engineers, Part C:

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The bumper system always directly causes the injury of the pedestrian leg in the car–pedestrian accidents. Therefore, it is of practical significance to optimize the bumper structure to enhance the protective effect of the pedestrian leg. Based on the original bumper system, this work proposes a novel negative Poisson’s ratio energy-absorbing forepart with inner hexagonal cellular structure, which is designed at the lower leg impact zone between the bumper beam and the cover. The parametric model of the negative Poisson’s ratio forepart, the lower legform impactor model, and the car–pedestrian collision model are firstly established. Then, through integrating the response surface method, second-order reliability method, and archive-based micro genetic algorithm, a reliability optimization design is further conducted for the negative Poisson’s ratio forepart based on the deterministic optimization results. Simulation results show that the optimized negative Poisson’s ratio forepart not only can significantly enhance the reliability and robustness, but also improve the protective effect of the pedestrian leg.

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Research on carbon fiber–reinforced plastic bumper beam subjected to low-velocity frontal impact

Cited by 31 publications

References 9 publications

Analysis of Three-Wheeler Vehicle Structure at the Event of Side Pole Crash

Analysis of Three-Wheeler Vehicle Structure at the Event of Side Pole Crash

Crashworthiness and lightweight optimization to applied multiple materials and foam-filled front end structure of auto-body

Reliability optimization of a novel negative Poisson’s ratio forepart for pedestrian protection

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