EXPERIMENTAL AND THEORETICAL INVESTIGATION OF THE FIRST FOLD CREATION IN THIN WALLED COLUMNS-中国期刊网

摘要 Inthispaper,atheoreticalformulaispresentedtopredicttheinstantaneousfoldingforceofthefirstfoldcreationinsquareandrectangularcolumnsunderaxialloading.Therectangularcolumnisasmallandsinglemodelofhoneycombswithsquareorrectangularcells.CalculationsarebasedontheanalysisoftheBasicFoldingMechanism(BFM).Forthispurpose,sumofthedissipatedenergyrateunderbendingaroundhorizontalandinclinedhingelinesandthedissipatedenergyrateunderextensionaldeformationswasequaltotheworkrateoftheexternalforceonthestructure.Thefinalformulaobtainedinthisresearch,reasonablypredictstheinstantaneousfoldingforceofsingle-cellsquareandrectangularhoneycombsinsteadoftheaveragevalue.Finally,accordingtothecalculatedtheoreticalrelation,theinstantaneousfoldingforceofthefirstfoldcreationinasquarecolumnwassketchedversusfoldingdistanceandcomparedtotheexperimentalresults,whichshowedagoodcorrelation.

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EXPERIMENTAL AND THEORETICAL INVESTIGATION OF THE FIRST FOLD CREATION IN THIN WALLED COLUMNS

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EXPERIMENTAL AND THEORETICAL INVESTIGATION OF THE FIRST FOLD CREATION IN THIN WALLED COLUMNS

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