Design of an Origami Patterned Pre-Folded Thin Walled Tubular Structure for Crashworthiness

dc.contributor.advisorTovar, Andres
dc.contributor.authorChaudhari, Prathamesh
dc.contributor.otherNematollahi, Khosrow
dc.contributor.otherEl-Mounayri, Hazim A.
dc.date.accessioned2019-04-25T14:22:39Z
dc.date.available2019-04-25T14:22:39Z
dc.date.issued2019-05
dc.degree.date2019en_US
dc.degree.disciplineMechanical Engineeringen
dc.degree.grantorPurdue Universityen_US
dc.degree.levelM.S.M.E.en_US
dc.descriptionIndiana University-Purdue University Indianapolis (IUPUI)en_US
dc.description.abstractThin walled tubular structures are widely used in the automotive industry because of its weight to energy absorption advantage. A lot of research has been done in different cross sectional shapes and different tapered designs, with design for manufacturability in mind, to achieve high specific energy absorption. In this study a novel type of tubular structure is proposed, in which predesigned origami initiators are introduced into conventional square tubes. The crease pattern is designed to achieve extensional collapse mode which results in decreasing the initial buckling forces and at the same time acts as a fold initiator, helping to achieve a extensional collapse mode. The influence of various design parameters of the origami pattern on the mechanical properties (crushing force and deceleration) are extensively investigated using finite element modelling. Thus, showing a predictable and stable collapse behavior. This pattern can be stamped out of a thin sheet of material. The results showed that a properly designed origami pattern can consistently trigger a extensional collapse mode which can significantly lower the peak values of crushing forces and deceleration without compromising on the mean values. Also, a comparison has been made with the behavior of proposed origami pattern for extensional mode verses origami pattern with diamond fold.en_US
dc.identifier.urihttps://hdl.handle.net/1805/18944
dc.identifier.urihttp://dx.doi.org/10.7912/C2/2645
dc.language.isoen_USen_US
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 United States
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/us/
dc.subjectCrashworthinessen_US
dc.subjectOrigamien_US
dc.subjectCrash Boxen_US
dc.subjectParametric Studyen_US
dc.subjectEnergy Absorptionen_US
dc.titleDesign of an Origami Patterned Pre-Folded Thin Walled Tubular Structure for Crashworthinessen_US
dc.typeThesisen
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