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·As shown in Fig 5 a the specimen of a first order hierarchical honeycomb structure with n 1 = 3 was prepared for the crushing test The specimen had a height of L 1 = 100 mm and a uniform wall thickness of t 1 = mm and the cell edge length 2B 1 of the hexagons was 8 specimen was manufactured by cutting an aluminium alloy
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·In addition the effect of crushing velocity on the crushing behavior of the BMAH is also discussed As the crushing velocity increases the total number of stress plateaus transitions from three initially to two and then to one The developed BMAH exhibits significant potential applications in multi stage energy absorbers and smart sensors
·Multicell tubal structures have generated increasing interest in engineering design for their excellent energy absorbing characteristics when crushed through severe plastic deformation To make more efficient use of the material topology optimization was introduced to design multicell tubes under normal crushing The design problem was formulated to maximize
DOI / Corpus ID 259585349; Energy absorption characteristics of a super hexagonal honeycomb under out of plane crushing article{Yang2023EnergyAC title={Energy absorption characteristics of a super hexagonal honeycomb under out of plane crushing} author={Yan Yang and Hua Rui Liu and Qiao Zhang and Jingxuan Ma and Xianfeng
The effects of geometric parameters on the in plane crushing behaviors of MDAH were further discussed through numerical simulation and theoretical analysis The results indicate that the multi step deformation mode of MDAH is related to the thickness and angle design of inclined rod
·Parametric analyses were carried out to explore the influence of the geometrical topology of sinusoidal waves namely wave amplitude = mm wave number = 1 6 and the relative density = on the out of plane mechanical properties of
·The in plane crushing performance of the BSH with different geometrical parameters under different crushing speeds was investigated by ABAQUS/Explicit The numerical findings suggested that the BSH displayed stronger energy absorption in contrast to the square hexagonal and hierarchical honeycombs at both quasi static and dynamic crushing
·Cells geometry configuration is a non negligible influencing factor Increasing the crushing velocity will weaken the effect of the cell wall angle Increasing the crushing velocity will strengthen the effect of relative density The optimal angle for the honeycombs under the y directional impact is found A transversely isotropic honeycomb is discovered based on the
·The crushing of cellular materials is highly nonlinear Namely all the nonlinearities of geometry material contact/impact and even fragmentation must be treated in one analysis In the author s point of view a computational framework suitable for crushing analysis of cellular material at least must have following capabilities
·The dynamic crushing behaviors and energy absorption capacities of the evolved structure SAH are systematically studied by finite element method with the commercial software package ANSYS/LS DYNA explicit code The dynamic performances of its original structures SSH and DAH are also simulated for a comparison
·DOI / Corpus ID 136678277; Out of plane crushing and local stiffness determination of proposed foam filled sandwich panel for Korean Tilting Train eXpress Numerical study
A task window pops up offering five tasks one of which is Cliknar Crushing You have been assigned the task Cliknar Crushing Kill 10 cliknar 0/10 The Foundation Various types of cliknar are found in the western part of the zone This task completes itself upon the killing of the 10th cliknar Reward
DOI / Corpus ID 269686938; Bi material multistable auxetic honeycombs with reusable and enhanced energy absorbing phases under in plane crushing
·The macroscopic observation of considered HC panel is shown in Fig structure of HC has a huge impact on their mechanical properties The influence of cells dimensions and the thickness of ribbons is obvious but the cells fillet radius and some geometrical imperfections are often omitted especially in numerical modeling [37] These
·Table 1 presents the percentage differences of crushing strength between the element size of mm and mm mm and mm mm and mm It can be seen that the difference of crushing strength between element sizes mm and mm is less than 5% Thus the element size mm × mm is employed throughout this study
·A four node shell element formulation with three point integration was used to model the crushing behavior of the aluminium honeycomb As shown in Fig 4 the historical shell element in Altair® Radioss is a simple bilinear Mindlin plate element coupled with a reduced integration scheme using one integration is applicable in a reliable manner to
·Under crushing BMAH exhibits three stress plateaus on the stress strain curve The first stress plateau is solely associated with recoverable elastic deformation while the second and third stress plateaus involve plastic deformation to enhance energy absorption efficiency Moreover BMAH maintains a stable Poisson s ratio even at high
DOI / Corpus ID 269450745; aHeterogeneous hexagonal honeycombs with nature inspired defect channels under in plane crushing article{Montazeri2024aHeterogeneousHH title={aHeterogeneous hexagonal honeycombs with nature inspired defect channels under in plane crushing} author={Amin Montazeri and
·Systematic numerical study on the in plane crushing behaviors of self similar hierarchical honeycombs under different impact velocities indicates that the introduction of a self similar hierarchy does indeed enrich the types of local deformation bands Qiang et al 2019 Furthermore the self similar hierarchical honeycomb is found to exhibit
·The compression process of the bionic unit can be divided into two stages preliminary collapse and further crushing under quasi static and mid speed Several bio honeycombs such as INT 6 DIA 6 and HYB 8 exhibit zero or negative Poisson s ratio owing to the bending and traction of bionic units in further crushing stage
·The crushing of cellular materials is a highly nonlinear problem for which geometrical material and contact/impact must be treated in one analysis In order to develop a framework able to solve it efficiently and accurately in this paper procedures for in plane crushing analysis of cellular materials using vector form intrinsic finite element VFIFE is performed
·In the out of plane crushing of honeycombs high resistance to deformation is afforded by the buckling of cell walls During the process a significant amount of energy is absorbed by the vertical cell walls which form the progressive plastic folds [18] Increasing the cell wall thickness would result in a higher strength and energy absorption capacity of the
