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dc.contributor.authorYuan, Chen
dc.date.accessioned2019-06-19
dc.date.available2019-06-19
dc.date.issued2018-12-30
dc.identifier.urihttp://hdl.handle.net/2123/20581
dc.description.abstractBy virtue of their excellent properties of specific strength-to-mass and stiffness-to-mass ratios, carbon fibre reinforced epoxy (CF/EP) structures are becoming increasingly important in various transportation tools and industrial machines. Many studies have investigated the damage responses of CF/EP composite structures. However, there are still outstanding issues associated with failure-mechanism investigation and design for CF/EP composite structures under crushing loading. First, specific experimental approaches and advantageous models remain inadequate. Second, systematic study of the crushing responses of CF/EP composite structures is necessary. Third, the structural design of CF/EP materials are meaningful but seldom. Transverse impact is a common and important crushing scenario for CF/EP composite sandwich panels (CSPs). This study developed a specific FEA model addressing intralaminar damage, interlaminar and adhesive delamination, and honeycomb core (HC) failure of CF/EP CSPs, and designed an optimal structure under both transverse normal and oblique impact. Next, in-plane crushing responses of the CF/EP CSPs were investigated. Both in-plane localised and globalised crushing tests were conducted to characterise the failure responses and mechanisms of CSPs. CF/EP composite tubes are very promising for crushing energy absorption. This study investigated the failure mechanism and energy absorption of CF/EP tubes under three triggering initiators subjected to both quasi-static and dynamic crushing. This study characterised the failure responses and mechanisms of CF/EP composite structures under different crushing scenarios, and numerical techniques were applied. Optimisation theories with mathematic algorithms were utilised to improve the models’ comprehensive performance. The findings provide a series of valuable data for potential engineering applications.en_AU
dc.rightsThe author retains copyright of this thesis. It may only be used for the purposes of research and study. It must not be used for any other purposes and may not be transmitted or shared with others without prior permission.en_AU
dc.subjectComposite structureen_AU
dc.subjectDynamic responseen_AU
dc.subjectfailure mechanismen_AU
dc.subjectModellingen_AU
dc.subjectCFRPen_AU
dc.subjectOptimisation designen_AU
dc.titleCrushing Responses and Design of CF/EP Composite Structuresen_AU
dc.typeThesisen_AU
dc.type.thesisDoctor of Philosophyen_AU
usyd.facultyFaculty of Engineering and Information Technologies, School of Aerospace, Mechanical and Mechatronic Engineeringen_AU
usyd.degreeDoctor of Philosophy Ph.D.en_AU
usyd.awardinginstThe University of Sydneyen_AU


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