Dissertations / Theses on the topic 'Honeycomb structure'
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Arceneaux, Donald J. "A 3D Printed Polycaprolactone Honeycomb Structure." Thesis, University of Louisiana at Lafayette, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10640968.
Full textThe application of sophisticated geometric structures within future host materials for increasing energy absorption and compression strength, while being fabricated from crack-healing materials, is of high interest for many functions. Raw feedstock extrusion and three-dimensional printing (3DP) technology were used to develop precise honeycomb structures through intricate deposition of polycaprolactone (PCL) filament. For standardization purposes during 3D model slicing and print quality consistency, constant wall thickness was used for honeycomb structure fabrication, manipulating only the cellular width to obtain variation of cell size to wall thickness ratios.
The honeycomb structures’ compression behaviors were studied through use of in-plane quasi-static uniaxial compression testing. Multiple cycles of compression loading were applied to the specimens in both transverse and ribbon directions at temperatures of 5 °C, room temperature (i.e. 22 °C), and 40 °C at a speed of 1.27 mm/min (0.05 in/min) per ASTM D6641. The energy absorption efficiencies of the honeycomb structure were calculated based on the compression strengths and behaviors displayed, which were then used to obtain the stepping upward stress theoretically. Using the specified stepping upward stresses, the energy absorption capabilities were found in both the transverse and ribbon directions at different temperatures per unit volume. The ability for “shape recovery” of the structures after each loading cycle was also calculated.
Outcomes from this research displayed exceptional recovery of PCL honeycomb structures after repeated compression loading cycles. Samples with relative density of 0.20 absorbed energies of up to 0.99 J/cm3. Upon removing compression loads, samples were capable of shape recovery up to 80% after the first deformation and up to 72% after the fifth deformation. When PCL honeycomb structures are used to reinforce host materials, they increase energy absorption capabilities while being capable of crack-healing functions with remarkable compressive strength. These properties make PCL advantageous for many industries.
Storozhenko, V. A., A. V. Myagkiy, and R. P. Orel. "Filtering of interference of inhomogeneous regular structure in thermal non-destructive control of cellular structures." Thesis, Eskisehir technical university, 2021. https://openarchive.nure.ua/handle/document/18954.
Full textStout, Sean Dakota. "DESIGN AND CHARACTERIZATION OF INTERMEDIATE TEMPERATURE SOLD OXIDE FUEL CELLS WITH A HONEYCOMB STRUCTURE; OPERATION, RESEARCH, AND OPPORTUNITIES." OpenSIUC, 2015. https://opensiuc.lib.siu.edu/theses/1740.
Full textDove-Jay, Ashley. "Development, integration and testing of a 0-v honeycomb structure for aircraft morphing." Thesis, University of Bristol, 2015. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.690034.
Full textBerkowitz, Charles Kyle. "Characterization of the debonding of graphite/epoxy-nomex honey comb sandwich structure." Thesis, Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/18188.
Full textGong, Xiaozhou. "Investigation of different geometric structure parameter for honeycomb textile composites on their mechanical performance." Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/investigation-of-different-geometric-structure-parameter-for-honeycomb-textile-composites-on-their-mechanical-performance(500d9a32-6c18-4df6-9e5b-40ccdda4c6b3).html.
Full textGandy, Helene Tchoutouo Ndjountche. "Adhesiveless honeycomb sandwich structure with carbon graphite prepreg for primary structural application: a comparative study to the use of adhesive film." Thesis, Wichita State University, 2012. http://hdl.handle.net/10057/5388.
Full textThesis (M.S.)--Wichita State University, College of Engineering, Dept. of Mechanical Engineering
Buzys, Matas, and Sara Nilsson. "Development of a new test methodology for car-to-truck crash." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-262654.
Full textScania CV AB are developing components to prevent fatal damages during frontal collisions with passenger cars. Therefore, they need to test their assemblies and specifically FUP (Frontal Underrun Protection). Currently, a full-scale test is done in which a passenger car is launched into a truck. The purpose of this study is to examine and develop the possibility of having a simplified test procedure in which only the relevant components of the truck are included, and a representative structure replaces the car. If possible, this would reduce costs and allow for greater repeatability. Analysis and evaluations are done via finite element models using ANSA, LS-Dyna and META. The conceptual design is visualized using CATIA V5. Results show good indication that the passenger car can be replaced by a trolley with deformable barriers mounted on it and the truck can be replaced by a simplified structure with main FUP components mounted onto it. Discussions about the numerical models results and the conceptual design highlight factors that show promising possibilities, but with emphasis on the continued work that is required.
Vinogradov, Nikolay. "Controlling Electronic and Geometrical Structure of Honeycomb-Lattice Materials Supported on Metal Substrates : Graphene and Hexagonal Boron Nitride." Doctoral thesis, Uppsala universitet, Institutionen för fysik och astronomi, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-194089.
Full textSvanström, Martin. "Honeycomb & path generation : En struktur för en ständigt växande karta ochgenerell generation av slumpmässiga vägar." Thesis, Linnéuniversitetet, Institutionen för datavetenskap, fysik och matematik, DFM, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-21244.
Full textFavre, Benoit. "Crushing properties of hexagonal adhesively bonded honeycombs loaded in their tubular direction." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/22620.
Full textCommittee Chair: Mulalo Doyoyo; Committee Co-Chair: Reginald Desroches; Committee Member: Laurence J. Jacobs.
Puttmann, John Paul. "Spatially Targeted Activation of a SMP." University of Dayton / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1525166147319011.
Full textPetras, Achilles. "Design of sandwich structures." Thesis, University of Cambridge, 1999. https://www.repository.cam.ac.uk/handle/1810/236995.
Full textTom, Louis-Georges. "Contribution à l'étude numérique de la propagation d'un défaut de collage dans une structure sandwich Nida." Thesis, Le Mans, 2014. http://www.theses.fr/2014LEMA1036/document.
Full textSAFRAN Aircelle manufactures sandwich structures made of composite skins bonded to aluminium honeycomb core for aircraft’s engines nacelles applications. Local disbonds may occur at the skins/core interface and lead to significant strength reduction under in-service loadings. The present work was done with ISMANS and SAFRAN Aircelle and deals with the introduction of a “Virtual Testing” approach in order to reduce substantiation and validation cost of sandwiches structures with embedded disbond.In this study we have two kinds of models at two scales to describe the sandwich behaviour: the “homogeneized” model, which provide an industrial tool for design offices and the “detailed” model, which provide a specific tool for accurate analysis of disbond growth initiation at skin/core interface. Due to the numerical cost of the second type of model, the superelement technique has been successfully used which permits to gain computational costs without altering the result quality.Damage mechanics, with cohesive zone elements, have been chosen to numerically determine the disbond growth threshold after a comparative study with linear fracture mechanics and a full experimental method. Inputs data for industrial code using cohesive zone elements have been studied through an experimental investigation. DCB type tests on reinforced sandwiches were perfomed in order to determine the energy release rate at the skin/core interface. Various mode-mixity and pure opening mode are available using the same testing tool. The latter has been successfully modelled
Escalé, Pierre. "Elaboration de films nid d'abeille hiérarchiquement structurés à partir de copolymères : synthèse, structuration et propriétés de surface." Thesis, Pau, 2012. http://www.theses.fr/2012PAUU3027/document.
Full textThe present studies aim at designing hierarchically structured porous surface from copolymers with well defined structures. As a science in constant evolution, polymer chemistry, enable the synthesis of diblock copolymers with different natures by the mean of various radical controlled polymerization techniques. Indeed, radical controlled polymerization with nitroxyde (NMP), by atom transfer (ATRP), by reversible addition/fragmentation transfer (RAFT) or by Cu(0) were used for the synthesis of diblock copolymers based on polystyrene and different acrylates or 4-vinylpyridine blocks. The intimately association between a fast solvent evaporation process named the Breath Figure and the synthesis of the copolymers enable the production of hierarchically structured materials from micro to nanoscale. The nature of the different blocks confers adhesion, wettability or bioactivity properties to these materials. These researches benefit from the chemistry and physico-chemistry laboratory competences. Indeed, microscopy techniques (optical, atomic force and electronic), scattering (small angle neutron or X-ray) as well as tack or wettability measurements enable the complete characterization of films structuration and point up their properties
Akoumeh, Rayane. "Films hiérarchiquement micro structurés en nid d’abeilles : élaboration, étude de la topographie et de la chimie de surface par TOF-SIMS." Thesis, Pau, 2016. http://www.theses.fr/2016PAUU3052/document.
Full textSince its introduction in 1994, the preparation of ordered porous polymer films by the breath figure “BF” method has received a considerable interest. Self-organized porous polymer films, with pores ordered into a hexagonal pattern, can be elaborated by a fast solvent evaporation method under a humid atmosphere, also called “Breath Figure” approach. The honeycomb films have found a panel of perspective applications ranging from materials with optical properties, biomaterial sensors, and scaffold for tissue engineering or highly hydrophobic surfaces. The main objective of this PhD thesis project is the fabrication of sensitive hierarchically self-organized bio inspired films based on organic compound trapping block copolymers. It is worth noting that one of the advantages of using block copolymer structure is that the first block confers the hydrophobic character, required for the elaboration and stability of HC structure, and the second block could provide an additional functionality such as hydrophilicity, stimuli-responsive character or trapping of targeted molecules (especially metals).During this thesis, a methodology of surface analysis is performed in order to understand the topography of these films as well as its surface chemistry. For this reason, various analytical techniques are used to describe the surface of these films vigorously in order to optimize these films to complex industrial contaminants.One of the techniques of surface analysis, i.e. TOF-SIMS (Time of Flight-Secondary Ion Mass Spectroscopy), has proved to be an effective tool for chemical characterization of the surface and in depth. This technique was the basic technique of our studies. It allowed the description of spectral finger prints as well as the distribution on the surface and in depth of each polymer in the structured films
Yu, Zhaohui Crocker Malcolm J. "Static, dynamic and acoustical properties of sandwich composite materials." Auburn, Ala., 2007. http://repo.lib.auburn.edu/2006%20Fall/Dissertations/YU_ZHAOHUI_54.pdf.
Full textShafizadeh, Jahan Emir. "Processing and characterization of honeycomb composite systems /." Thesis, Connect to this title online; UW restricted, 1999. http://hdl.handle.net/1773/9830.
Full textMartin, Cary Joseph. "Prepreg effects on honeycomb composite manufacturing /." Thesis, Connect to this title online; UW restricted, 1998. http://hdl.handle.net/1773/9861.
Full textBianchi, Gabriel. "Structural performance of spacecraft honeycomb panels." Thesis, University of Southampton, 2011. https://eprints.soton.ac.uk/333288/.
Full textLiang, T. "Electrohydrodynamic forming of honeycomb-like polymeric structures." Thesis, University College London (University of London), 2015. http://discovery.ucl.ac.uk/1464210/.
Full textCopenhaver, David C. "Thermal characterization of honeycomb core sandwich structures." Thesis, This resource online, 1996. http://scholar.lib.vt.edu/theses/available/etd-11182008-063547/.
Full textWong, Kok Hou Centre for Advanced Macromolecular Design Faculty of Engineering UNSW. "Honeycomb structured porous film from amphiphilic block copolymers for biomedical applications." Awarded by:University of New South Wales. Centre for Advanced Macromolecular Design, 2008. http://handle.unsw.edu.au/1959.4/41493.
Full textPapka, Scott Duane. "In-plane uniaxial and biaxial crushing of a polycarbonate honeycomb /." Digital version accessible at:, 1998. http://wwwlib.umi.com/cr/utexas/main.
Full textChurch, Benjamin Cortright. "High conductivity alloys for extruded metallic honeycomb." Thesis, Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/21283.
Full textSeay, Wesley Daniel. "Capillary rheometric evaluation of honeycomb extrusion pastes." Thesis, Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/18951.
Full textMasters, Iain George. "Deformation mechanisms in honeycombs." Thesis, University of Liverpool, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.284155.
Full textMaheri, M. R. "Vibration damping in composite/honeycomb sandwich beams." Thesis, University of Bristol, 1991. http://hdl.handle.net/1983/d96ba3e9-edb0-4a07-ac6e-69328ed22678.
Full textHoemann, John M. "Experimental evaluation of structural composites for blast resistant design." Diss., Columbia, Mo. : University of Missouri-Columbia, 2007. http://hdl.handle.net/10355/5045.
Full textThe entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on April 9, 2009) Includes bibliographical references.
Hayes, Alethea M. "Compression behavior of linear cellular steel." Thesis, Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/32857.
Full textMARINUCCI, GERSON. "Desenvolvimento de nucleo alveolar nao-plano aplicado a estruturas sanduiche." reponame:Repositório Institucional do IPEN, 1992. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10360.
Full textMade available in DSpace on 2014-10-09T13:56:12Z (GMT). No. of bitstreams: 1 05298.pdf: 2728793 bytes, checksum: bd666bab4f8ed34cf76b4702d3b8e1e0 (MD5)
Dissertacao (Mestrado)
IPEN/D
Escola Politecnica, Universidade de Sao Paulo - POLI/USP
Williams, Ebonée Porché Marie. "Process engineering of polynanomeric layered and infused composites /." Thesis, Connect to this title online; UW restricted, 2003. http://hdl.handle.net/1773/9879.
Full textSequeira, Lopes Tavares Sandra. "Optimisation of low pressure processing for honeycomb sandwich structures /." [S.l.] : [s.n.], 2009. http://library.epfl.ch/theses/?nr=4497.
Full textAydincak, Ilke. "Investigation Of Design And Analyses Principles Of Honeycomb Structures." Master's thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/12608998/index.pdf.
Full textMin, Eun Hee Centre for Advanced Macromolecular Design Faculty of Engineering UNSW. "Fabrication of honeycomb structured porous membranes for biological application." Awarded by:University of New South Wales. Centre for Advanced Macromolecular Design, 2010. http://handle.unsw.edu.au/1959.4/44823.
Full textSimula, Leon. "Homogenization theory for structures of honeycomb and chessboard types /." Luleå, 2002. http://epubl.luth.se/1402-1544/2002/48.
Full textOh, Raymond H. "The influence of honeycomb dies on paste extrusion mechanics." Thesis, Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/19029.
Full textBoucher, Marc-Antoine C. J. "Honeycombs with structured core for enhanced damping." Thesis, University of Exeter, 2015. http://hdl.handle.net/10871/20516.
Full textZhang, Junjie. "The mechanics of foams and honeycombs." Thesis, University of Cambridge, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.333386.
Full textBalawi, Shadi Omar. "Effective Mechanical Behavior of Honeycombs: Theoretical and Experimental Studies." Cincinnati, Ohio : University of Cincinnati, 2007. http://rave.ohiolink.edu/etdc//view?acc_num=ucin1179319913.
Full textAdvisor: Dr. Jandro L. Abot. Title from electronic thesis title page (viewed June 29, 2010). Keywords: Honeycomb Structures; Mechanical Properties; Cellular Structures. Includes abstract. Includes bibliographical references.
Lee, Hoon. "Drop-weight and ballistic impact of honeycomb composite sandwich structures." Thesis, Imperial College London, 2004. http://hdl.handle.net/10044/1/7141.
Full textForeman, Cory. "Nondestructive detection and characterization of damages in honeycomb composite structures." [Ames, Iowa : Iowa State University], 2008.
Find full textRamanathan, Sathish Kumar. "Sound transmission properties of honeycomb panels and double-walled structures." Doctoral thesis, KTH, MWL Marcus Wallenberg Laboratoriet, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-96538.
Full textQC 20120607
Othman, Abdul Rahim. "Quasi-static and impact characteristics of honeycomb composite sandwich structures." Thesis, University of Leeds, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.435821.
Full textSoliman, Hazem. "Mechanical Properties of Cellular Core Structures." Diss., Virginia Tech, 2016. http://hdl.handle.net/10919/70456.
Full textPh. D.
Li, Zhuang. "Vibration and acoustical properties of sandwich composite materials /." Auburn, Ala., 2005. http://repo.lib.auburn.edu/2005%20Fall/Dissertation/LI_ZHUANG_26.pdf.
Full textHornig, Klaus H. Flowers George T. "Heuristic optimization methods for the characterization of dynamic mechanical properties of composite materials." Auburn, Ala., 2007. http://repo.lib.auburn.edu/2006%20Fall/Dissertations/HORNIG_KLAUS_7.pdf.
Full textRobinson, Justin Mark. "Analytical and experimental study of FRP honeycomb sandwich panels with sinusoidal core." Morgantown, W. Va. : [West Virginia University Libraries], 2001. http://etd.wvu.edu/templates/showETD.cfm?recnum=2093.
Full textTitle from document title page. Document formatted into pages; contains xi, 127 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 127).
Ghazali, Emna, and Emna Ghazali. "Mechanical performance of adhesively bonded repairs in honeycomb composite sandwich structures." Doctoral thesis, Université Laval, 2017. http://hdl.handle.net/20.500.11794/37713.
Full textEn service, les pièces aéronautiques en matériaux composites et structures sandwiches subissent des dommages qui nécessitent des réparations. Les réparations par patch interne en biseau, en escalier ou par combinaison des deux offrent une excellente restauration de la résistance mécanique pour ces structures composites. Cependant, l’environnement de réparation peut se révéler être un défi de taille quant à leur mise en œuvre, au choix des paramètres géométriques (angle de biseau, nombre de plis extra), à leur comportement mécanique sous différents chargements ainsi qu’à leur processus d’endommagement. Cette thèse présente une étude expérimentale et numérique (éléments finis) du comportement mécanique de réparations par patch interne effectuées sur des structures avec des peaux en composites à renforts tissés fabriquées hors autoclave et âme en Nomex en nid d’abeille. Afin de déterminer l’effet de différents paramètres géométriques sur la résistance de la réparation et de comprendre son comportement mécaniqueet son processus d’endommagement, une série de tests de caractérisation sous différents chargements (traction, compression, flexion) a été effectuée sur des structures sandwiches faite avec deux matériaux composites tissés pour la peau : soit du composite tissé taffetas (PW) ou satin de 8 (8HS) Des simulations numériques ont été effectuées afin de prédire le comportement mécanique de la réparation. Cette étude numérique a été effectuée en plusieurs étapes. Un premier modèle 2D qui suppose que la colle ait un comportement linéaire élastique a été développé et permet d’étudier la distribution des contraintes dans le joint de colle pour différentes configurations de réparation rectangulaire. Ensuite, le modèle 2D est modifié pour tenir compte du comportement élastoplastique de la colle et ceci permet de prédire le comportement mécanique d’une réparation rectangulaire jusqu’à la rupture. Par la suite, un modèle 3D est développé pour prédire le comportement de réparations circulaires sous des chargements de compression. Ce modèle tient compte de l’endommagement progressif des peaux en composite. Les résultats de ces simulations numériques sont comparés par la suite aux mesures expérimentales. Les modèles par éléments finis, avec une loi de comportement élastoplastique pour le joint de colle, permettent une estimation adéquate de la résistance ainsi que de l’endommagement des structures sandwiches réparées. Une étude paramétrique a eu lieu afin d’étudier l’effet de différents paramètres géométriques sur la résistance de la réparation. La mise en œuvre et la détermination de la performance mécanique des réparations par patch interne des structures sandwiches est une tâche complexe avec de multiples paramètres de matériaux et de procédés. D’une manière générale, cette thèse contribue à une meilleure compréhension du comportement mécanique des structures sandwiches réparées et de leur processus d’endommagement. Les modèles par éléments finis développés dans ces travaux ont été validés expérimentalement et des simulations paramétriques ont contribué à une meilleure compréhension de l’influence des différents paramètres géométriques sur la résistance de la réparation par patch interne.
In service, aeronautical components made of composite materials and sandwich structures are subject to type of damages that require repairs. Adhesively bonded repairs (scarf-scarf, step-step or scarf-step) offer an excellent mechanical strength recovery for these composite structures. However, the repair environment can be a significant challenge in terms of the choice of geometrical parameters (scarf angle, addition of an overply), damage process parameters and mechanical behavior under different loads.This thesis presents both experimental and numerical investigations of the mechanical behavior of internal patch repairs carried-out on Nomex honeycomb composite sandwich structures. The skins use an out-of-autoclave woven fabric made of carbon-epoxy composite materials. In order to determine the effect of different geometric parameters on the resistance of the internal patch repair and to better understand its mechanical behavior and damage processes, a series of mechanical tests under different loads (tensile, compression, bending) is conducted on the repaired sandwich panels made with either plain weave or 8 harness satin textile composites. Numerical simulations were carried out, in several stages, in order to determine the mechanical behavior of the repair. First, a 2D model that assumes a linear elastic behavior of the adhesive film was developed. This simple model allows to study the distribution of the stresses in the adhesive joint for different configurations of rectangular patch repair. Then, the 2D model is modified in order to account for the elastoplastic behavior of the adhesive film. The latter allows to predict the mechanical behavior of a rectangular internal patch repair until rupture. Subsequently, a 3D model is developed to predict the mechanical behavior of circular internal patch repairs under compressive loadings. This model takes into account the progressive damage and failure of the woven fabric skins. The results of these numerical simulations are validated by comparing them to experimental measurements. The finite element models that account for the elastoplastic behavior law for the adhesive joint allow predictions of the strength as well as the damage morphology of the repaired sandwich structures. A parametric study has also been conducted in order to determine the influence of the geometrical design parameters in the repair strength. Processing and assessment of the mechanical performance of internal patch repairs on sandwich structures is a complex task with multiple material and process parameters. In general, this thesis contributes to a better understanding of the mechanical behavior of adhesively bonded repaired sandwich structures and their damage process. The finite element models developed in this work and validated experimentally have contributed through parametric numerical simulations to an economical better understanding of the influence of different geometric parameters on the strength and failure of internal patch repaired sandwich panels.
In service, aeronautical components made of composite materials and sandwich structures are subject to type of damages that require repairs. Adhesively bonded repairs (scarf-scarf, step-step or scarf-step) offer an excellent mechanical strength recovery for these composite structures. However, the repair environment can be a significant challenge in terms of the choice of geometrical parameters (scarf angle, addition of an overply), damage process parameters and mechanical behavior under different loads.This thesis presents both experimental and numerical investigations of the mechanical behavior of internal patch repairs carried-out on Nomex honeycomb composite sandwich structures. The skins use an out-of-autoclave woven fabric made of carbon-epoxy composite materials. In order to determine the effect of different geometric parameters on the resistance of the internal patch repair and to better understand its mechanical behavior and damage processes, a series of mechanical tests under different loads (tensile, compression, bending) is conducted on the repaired sandwich panels made with either plain weave or 8 harness satin textile composites. Numerical simulations were carried out, in several stages, in order to determine the mechanical behavior of the repair. First, a 2D model that assumes a linear elastic behavior of the adhesive film was developed. This simple model allows to study the distribution of the stresses in the adhesive joint for different configurations of rectangular patch repair. Then, the 2D model is modified in order to account for the elastoplastic behavior of the adhesive film. The latter allows to predict the mechanical behavior of a rectangular internal patch repair until rupture. Subsequently, a 3D model is developed to predict the mechanical behavior of circular internal patch repairs under compressive loadings. This model takes into account the progressive damage and failure of the woven fabric skins. The results of these numerical simulations are validated by comparing them to experimental measurements. The finite element models that account for the elastoplastic behavior law for the adhesive joint allow predictions of the strength as well as the damage morphology of the repaired sandwich structures. A parametric study has also been conducted in order to determine the influence of the geometrical design parameters in the repair strength. Processing and assessment of the mechanical performance of internal patch repairs on sandwich structures is a complex task with multiple material and process parameters. In general, this thesis contributes to a better understanding of the mechanical behavior of adhesively bonded repaired sandwich structures and their damage process. The finite element models developed in this work and validated experimentally have contributed through parametric numerical simulations to an economical better understanding of the influence of different geometric parameters on the strength and failure of internal patch repaired sandwich panels.
Bucci, Sara [Verfasser]. "On the elastic-plastic behaviour of regular honeycomb structures / Sara Bucci." Magdeburg : Universitätsbibliothek, 2018. http://d-nb.info/1158660065/34.
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