In-planedynamiccrushingofhoneycombs

withnegativePoissonsratioeffect

ZHANG Xin-chun; LIU Ying; LI Na

doi:10.11883/1001-1455(2012)05-0475-08

Volume 32 Issue 5

Apr. 2014

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ZHANG Xin-chun, LIU Ying, LI Na. In-planedynamiccrushingofhoneycombswithnegativePoissonsratioeffect[J]. Explosion And Shock Waves, 2012, 32(5): 475-482. doi: 10.11883/1001-1455(2012)05-0475-08

Citation:

ZHANG Xin-chun, LIU Ying, LI Na. In-planedynamiccrushingofhoneycombs withnegativePoissonsratioeffect[J]. Explosion And Shock Waves, 2012, 32(5): 475-482. doi: 10.11883/1001-1455(2012)05-0475-08

ZHANG Xin-chun, LIU Ying, LI Na. In-planedynamiccrushingofhoneycombswithnegativePoissonsratioeffect[J]. Explosion And Shock Waves, 2012, 32(5): 475-482. doi: 10.11883/1001-1455(2012)05-0475-08

Citation:

ZHANG Xin-chun, LIU Ying, LI Na. In-planedynamiccrushingofhoneycombs withnegativePoissonsratioeffect[J]. Explosion And Shock Waves, 2012, 32(5): 475-482. doi: 10.11883/1001-1455(2012)05-0475-08

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In-planedynamiccrushingofhoneycombs withnegativePoissonsratioeffect

doi: 10.11883/1001-1455(2012)05-0475-08

1.
Departmentof MechanicalEngineering,NorthChinaElectricPowerUniversity,

Funds:

NationalNaturalScienceFoundationofChina(10972028)

More Information

Corresponding author: ZHANG Xin-chun
Publish Date: 2012-09-25

Abstract

Abstract

BasedonexplicitdynamicfiniteelementsimulationbyANSYS/LS-DYNA,thein-planedynamiccrushingofhoneycombswithnegativePoissonsratioeffectswasnumericallyinvestigated. Undertheassumptionthattheedgelengthandthicknesswerethesame,thehexagonalhoneycomb modelsfilledwithconcavecellsbythevariationofexpandingangleswereestablished.Theeffectsof expandingangleandimpactvelocityonthein-planecrushingdeformationandenergyabsorptioncapacitiesofhoneycombswerediscussedindetail. Resultsshowthatthein-planedynamiccrushingof re-entranthoneycombsreliesontheexpandingangle.Thelargeristheabsolutevalueoftheexpandingangle, thehigherisplateaustressattheproximalend.Thespecimensdisplayhigherenergyabsorptioncapacitieswiththeincreaseoftheimpactvelocity
- solidmechanics,
- energyabsorption,
- explicitdynamicfiniteelement,
- honeycombs,
- negativePoissonsratioeffects,
- plateaustress,
- in-planeimpacting