An experimental study of low-velocity impact responses of sandwich panels for Korean low floor bus

Evaluation of structural integrity after ballast-flying impact damage of a GFRP lightweight bogie frame for railway vehicles

“…In general, it's known that the ballast-flying causing impact areas of bogie frame during the operation of railway vehicles are distributed across the front part of frame and the weight of flying gravel is about 75 g. Therefore, this study simulated impactors in consideration of a vehicle's running speed of 100 km/h and mass of gravel of 75 g and allocated them in an equal spacing to the front part of bogie frame, which is the area of impact induced by ballast flying, in order to conduct impact analysis of the bogie frame. In the analysis, ChangChang failure criterion was used for checking whether the bogie frame composites had failure or not [24]. Fig.…”

In-plane stiffness of the anisotropic multifunctional hierarchical honeycombs

“…Regarding the applications in civil engineering, the honeycomb wave impeding barrier for pile foundations of the high-speed train viaduct can effectively mitigate the field vibration resulted from the passing trains [7]; the multi-layer energy dissipating panel, consisting of the polymer honeycomb and the viscoelastic solid material, could increase greatly both the shear resistance and the energy dissipation at contact surfaces for retrofitting semi-rigidly connected steel frames [8]. Besides, the hexagonal honeycomb sandwich panels also show desirable abilities for tailoring impact resistance for racing cars [9], low floor bus [10] and train application [11], for mitigating blast wave to protect structures from the high intensity dynamic loads created by explosions in air or water [12] and so on.…”

Experimental study on the fatigue behaviour of honeycomb sandwich panels with artificial defects

“…Thanks to this core, the moment of inertia of the structure will increase and hence the rigidity of the structure too. Currently there is a significant and growing interest in sandwich structures with honeycomb core [1]. In order to meet the ever growing request of lighter vehicles, high speed trains and ships, the transportation industry is engaged in the design and construction of structures quite different from the traditional ones, and as a consequence a lack of experiences concerning the strength of many structural details has become apparent.…”