A bionic method for the crashworthiness design of thin-walled structures inspired by bamboo

Zou, Meng; Xu, Shibo; Wei, Cangang; Wang, Huixia; Liu, Zhenze

doi:10.1016/j.tws.2015.12.023

Cited by 191 publications

(65 citation statements)

References 32 publications

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“…The SEA of initial B-CB&B type bionic structure is 2.592 kJ/kg and that value is set to be the lower limit. 1 t , 2 t~8 t represent the thickness variables of 8 components as shown in figure 3. The simulation scenario we used here is a full-size rigid wall collision as shown in figure 4.…”

Section: Sea Total Energy Absorption Total Mass mentioning

confidence: 99%

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Crashworthiness optimization of bionic bumper structure under low-speed impact

Liu

Yuan

et al. 2018

MATEC Web Conf.

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Abstract. By considering the crashworthiness design of bionic bumper structure during frontal impact, the thicknesses are chosen to analysis and optimal design to obtain the lightweight demand. The orthogonal experiment design and radial basis function are employed to construct the response surface for the performances of thin-walled components. The multi-objective cuckoo search (MOCS) is applied to perform the optimal design. The results demonstrate that the optimal method and process proposed have high accuracy and validity.

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Section: Sea Total Energy Absorption Total Mass mentioning

confidence: 99%

“…The safety demands cause an increase in weight of traditional vehicle body. In nature, some creatures have good mechanical properties as well as lightweight structures, it is feasible to apply biological methods to energy-absorbing structures, which can ensure the lightweight design while improving the energy absorption capacity [1,2].…”

Section: Introductionmentioning

confidence: 99%

Crashworthiness optimization of bionic bumper structure under low-speed impact

Liu

Yuan

et al. 2018

MATEC Web Conf.

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“…The separation of the cross wall with a lightweight core increased the moment of inertia of sandwich structures that could make the structure to resist the bending and buckling loads. The energy absorption of the two bionic bumper models was higher than the initial bumper model, and the deformation of the two bionic models was much smaller than the initial one [15, 16]. Comparing the two bionic bumper models, it could be seen that the B-CB&B model with multimaterial had the best energy absorption characteristics with the least weight.…”

Section: Numerical Simulation and Analysismentioning

confidence: 99%

“…Bamboo [15, 16], horsetails [17, 18], and cattail [19] are kinds of gradient composite material with good mechanical properties in the natural environment. Due to bamboo's low density, it has a higher stiffness-mass ratio than some metallic materials such as steel and aluminum.…”

Section: Introductionmentioning

confidence: 99%

Crashworthiness Design for Bionic Bumper Structures Inspired by Cattail and Bamboo

Liu

et al. 2017

Applied Bionics and Biomechanics

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Many materials in nature exhibit excellent mechanical properties. In this study, we evaluated the bionic bumper structure models by using nonlinear finite element (FE) simulations for their crashworthiness under full-size impact loading. The structure contained the structural characteristics of cattail and bamboo. The results indicated that the bionic design enhances the specific energy absorption (SEA) of the bumper. The numerical results showed that the bionic cross-beam and bionic box of the bionic bumper have a significant effect on the crashworthiness of the structure. The crush deformation of bionic cross-beam and box bumper model was reduced by 33.33%, and the total weight was reduced by 44.44%. As the energy absorption capacity under lateral impact, the bionic design can be used in the future bumper body.

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“…To be specific, the energy absorption of nodal samples is greater than that of the internode samples and the specific energy absorption (SEA) of nodal samples could be close to that of aluminium alloy and steel tube, and the SEA of the internode samples could be close to that of copper tube. At the same time, inspired by bamboos, using the bionic method they proposed a new type of thin-walled structures with excellent energy absorption under lateral/axial impact [45].…”

Section: Introductionmentioning

confidence: 99%

Quasi-Static and Tensile Behaviors of the Bamboos

Gong¹,

Cui²,

Zhao³

et al. 2017

Preprint

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Abstract:In this paper, quasi-static axial compression tests are performed on the nodal Moso bamboos to study the size effect on energy absorption of the bamboos and the damage pattern of the multiple bamboo columns. Experimental results show that under the same moisture content, growth age and growing environment, the specific energy absorption (SEA) of the test samples increases with the increase of the out-diameter and thickness of the bamboo columns, indicating that size effect exists for energy absorption of the Moso Bamboos. For the multiple bamboo columns, there are mainly three failure modes for the constituent single bamboo columns: splitting above the node, splitting below the node and splitting through the node. Also, the tensile tests are conducted on three kinds of dog-bone shaped bamboo samples to investigate the macroscopic tensile fracture mode in the longitudinal direction of Moso bamboos. Results show that there is no direct relationship between the fracture pattern and moisture content of the bamboos, as well as the growth age of the bamboos. However, the tensile loading rate and the shape of the dog-bone shaped bamboo sample could affect the macroscopic fracture pattern of the bamboos in some cases.Keywords: moso bamboo; quasi-static behavior; tensile behavior; size effect on energy absorption; damage pattern of the multiple bamboo columns; macroscopic tensile fracture mode

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A bionic method for the crashworthiness design of thin-walled structures inspired by bamboo

Cited by 191 publications

References 32 publications

Crashworthiness optimization of bionic bumper structure under low-speed impact

Crashworthiness optimization of bionic bumper structure under low-speed impact

Crashworthiness Design for Bionic Bumper Structures Inspired by Cattail and Bamboo

Quasi-Static and Tensile Behaviors of the Bamboos

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