Energy absorption and low velocity impact response of polyurethane foam filled pyramidal lattice core sandwich panels

2014 ◽  
Vol 108 ◽  
pp. 304-310 ◽  
Author(s):  
Guoqi Zhang ◽  
Bing Wang ◽  
Li Ma ◽  
Linzhi Wu ◽  
Shidong Pan ◽  
...  
Keyword(s):  
Energy Absorption ◽  
Polyurethane Foam ◽  
Sandwich Panels ◽  
Impact Response ◽  
Low Velocity Impact ◽  
Low Velocity ◽  
Velocity Impact ◽  
Foam Filled ◽  
Lattice Core

Study on the low-velocity impact response and CAI behavior of foam-filled sandwich panels with hybrid facesheet

2015 ◽  
Vol 132 ◽  
pp. 1129-1140 ◽  
Author(s):  
Bin Yang ◽  
Zhenqing Wang ◽  
Limin Zhou ◽  
Jifeng Zhang ◽  
Lili Tong ◽  
...  
Keyword(s):  
Sandwich Panels ◽  
Impact Response ◽  
Low Velocity Impact ◽  
Low Velocity ◽  
Velocity Impact ◽  
Foam Filled

Energy absorption and low-velocity impact response of shear thickening gel reinforced polyurethane foam

2020 ◽  
Vol 29 (4) ◽  
pp. 045018
Author(s):  
Xiaoke Liu ◽  
Chen Qian ◽  
Kejing Yu ◽  
Yang Jiang ◽  
Qianqian Fu ◽  
...  
Keyword(s):  
Energy Absorption ◽  
Polyurethane Foam ◽  
Shear Thickening ◽  
Impact Response ◽  
Low Velocity Impact ◽  
Low Velocity ◽  
Velocity Impact

Low-velocity impact response of wood-strand sandwich panels and their components

Holzforschung ◽  
2018 ◽  
Vol 72 (8) ◽  
pp. 681-689 ◽  
Author(s):  
Mostafa Mohammadabadi ◽  
Vikram Yadama ◽  
LiHong Yao ◽  
Debes Bhattacharyya
Keyword(s):  
Energy Absorption ◽  
Impact Energy ◽  
Failure Modes ◽  
Sandwich Panels ◽  
Low Velocity Impact ◽  
Insulation Material ◽  
Low Velocity ◽  
Velocity Impact ◽  
Section Modulus ◽  
The Impact

AbstractProfiled hollow core sandwich panels (SPs) and their components (outer layers and core) were manufactured with ponderosa and lodgepole pine wood strands to determine the effects of low-velocity impact forces and to observe their energy absorption (EA) capacities and failure modes. An instrumented drop weight impact system was applied and the tests were performed by releasing the impact head from 500 mm for all the specimens while the impactors (IMPs) were equipped with hemispherical and flat head cylindrical heads. SPs with cavities filled with a rigid foam insulation material (SPfoam) were also tested to understand the change in EA behavior and failure mode. Failure modes induced by both IMPs to SPs were found to be splitting, perforating, penetrating, core crushing and debonding between the core and the outer layers. SPfoams absorbed 26% more energy than unfilled SPs. SPfoams with urethane foam suffer less severe failure modes than SPs. SPs in a ridge-loading configuration absorbed more impact energy than those in a valley-loading configuration, especially when impacted by a hemispherical IMP. Based on the results, it is evident that sandwich structure is more efficient than a solid panel concerning impact energy absorption, primarily due to a larger elastic section modulus of the core’s corrugated geometry.

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