A postbuckling solution for debonded sandwich panel under in-plane compression

1997 ◽  
Author(s):  
Chiachung Lee ◽  
Larry Mignosa ◽  
Mehmet Basci ◽  
Chiachung Lee ◽  
Larry Mignosa ◽  
...  
Keyword(s):  
Sandwich Panel ◽  
Plane Compression

Mechanical behaviors of C/SiC pyramidal lattice core sandwich panel under in-plane compression

2019 ◽  
Vol 214 ◽  
pp. 103-113 ◽  
Author(s):  
Yanfei Chen ◽  
Lu Zhang ◽  
Yunong Zhao ◽  
Rujie He ◽  
Shigang Ai ◽  
...  
Keyword(s):  
Sandwich Panel ◽  
Mechanical Behaviors ◽  
Plane Compression ◽  
Lattice Core

The Through-Thickness Compressive Strength of a Composite Sandwich Panel With a Hierarchical Square Honeycomb Sandwich Core

2009 ◽  
Vol 76 (6) ◽  
Author(s):  
F. Côté ◽  
B. P. Russell ◽  
V. S. Deshpande ◽  
N. A. Fleck
Keyword(s):  
Finite Element ◽  
Compressive Strength ◽  
Sandwich Panel ◽  
Analytical Models ◽  
Composite Sandwich ◽  
Hierarchical Topology ◽  
Collapse Mechanisms ◽  
Strength Based ◽  
Out Of Plane ◽  
Plane Compression

Sandwich panels with aluminum alloy face sheets and a hierarchical composite square honeycomb core have been manufactured and tested in out-of-plane compression. The prismatic direction of the square honeycomb is aligned with the normal of the overall sandwich panel. The cell walls of the honeycomb comprise sandwich plates made from glass fiber/epoxy composite faces and a polymethacrylimide foam core. Analytical models are presented for the compressive strength based on three possible collapse mechanisms: elastic buckling of the sandwich walls of the honeycomb, elastic wrinkling, and plastic microbuckling of the faces of the honeycomb. Finite element calculations confirm the validity of the analytical expressions for the perfect structure, but in order for the finite element simulations to achieve close agreement with the measured strengths it is necessary to include geometric imperfections in the simulations. Comparison of the compressive strength of the hierarchical honeycombs with that of monolithic composite cores shows a substantial increase in performance by using the hierarchical topology.

Out-of-plane compression of a novel hybrid corrugated core sandwich panel

2021 ◽  
pp. 114222
Author(s):  
Shanyouming Sun ◽  
Dan Liu ◽  
Yinglong Sheng ◽  
Shangsheng Feng ◽  
Hongbin Zhu ◽  
...  
Keyword(s):  
Sandwich Panel ◽  
Out Of Plane ◽  
Plane Compression

Experimental and numerical investigation of corroded steel columns subjected to in-plane compression and bending

2020 ◽  
Vol 151 ◽  
pp. 106735 ◽  
Author(s):  
Zongxing Zhang ◽  
Shanhua Xu ◽  
Biao Nie ◽  
Rou Li ◽  
Zhen Xing
Keyword(s):  
Numerical Investigation ◽  
Steel Columns ◽  
Plane Compression

Out-of-plane static compression and energy absorption of paper hierarchical corrugation sandwich panels

2021 ◽  
pp. 030932472110085
Author(s):  
Huineng Wang ◽  
Yanfeng Guo ◽  
Yungang Fu ◽  
Dan Li
Keyword(s):  
Yield Strength ◽  
Bearing Capacity ◽  
Energy Absorption ◽  
Sandwich Panel ◽  
Second Order ◽  
Compression Rate ◽  
Static Compression ◽  
First Order ◽  
Out Of Plane ◽  
Analytical Approaches

This study introduces the opinion of the corrugation hierarchy to develop the second-order corrugation paperboard, and explore the deformation characteristics, yield strength, and energy absorbing capacity under out-of-plane static evenly compression loading by experimental and analytical approaches. On the basis of the inclined-straight strut elements of corrugation unit and plastic hinge lines, the yield and crushing strengths of corrugation unit were analyzed. This study shows that as the compressive stress increases, the second-order corrugation core layer is firstly crushed, and the first-order corrugation structures gradually compacted until the failure of entire structure. The corrugation type has an obvious influence on the yield strength of the corrugation sandwich panel, and the yield strength of B-flute corrugation sandwich panel is wholly higher than that of the C-flute structure. At the same compression rate, the flute type has a significant impact on energy absorption, and the C-flute second-order corrugation sandwich panel has better bearing capacity than the B-flute structure. The second-order corrugation sandwich panel has a better bearing capacity than the first-order structure. The static compression rate has little effect on the yield strength and deformation mode. However, with the increase of the static compression rate, the corrugation sandwich panel has a better cushioning energy absorption and material utilization rate.

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