Log in

Relevant bibliographies by topics / Continuous damage / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Continuous damage.

Dissertations / Theses on the topic 'Continuous damage'

Author: Grafiati

Published: 30 May 2022

Last updated: 31 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 dissertations / theses for your research on the topic 'Continuous damage.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

DOMINGUES, STELLA MARIS PIRES. "ANALYSIS OF BRITTLE ELASTIC MATERIALS THROUGH A CONTINUOUS DAMAGE MODEL." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 1996. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=33202@1.

Full text

Abstract:

COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO<br>Este trabalho lida com uma teoria de dano contínuo, desenvolvida em um contexto termodinâmico, capaz de realizar uma descrição macroscópica da degradação de um material induzida pela deformação em estruturas elásticas frágeis (isto é, falha ocorre sem deformações permanentes). Na modelagem, supõe-se que a energia livre de Helmholtz não depende apenas da deformação e da temperatura absoluta, mas também da variável dano e de seu gradiente. Além disso, para levar em con

APA, Harvard, Vancouver, ISO, and other styles

2

CHIMISSO, FULVIO ENRICO GIACOMO. "A CONTINUOUS DAMAGE MODEL FOR MATERIALS WITH ELASTIC-PLASTIC BEHAVIOR." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 1994. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=33238@1.

Full text

Abstract:

COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>A Mecânica do Dano Contínuo é uma ferramenta promissora para a análise de vida residual em componentes de máquinas e de estruturas. Todavia, não é uma tarefa simples a de se obter uma descrição fisica realística, associada a uma descrição matemática correta, do acoplamento entre a deformação e o amolecimento causado pela degradação da microestrutura. No caso de barras metálicas, a deformação plástica cíclica causa um endurecimento junto com uma degradação na estrutura (dano de fadiga). Por outro lado, a degradação da estrutura ind

APA, Harvard, Vancouver, ISO, and other styles

3

Chen, Fuh-Sheng. "Damage and failure analysis of continuous fiber-reinforced polymer composites." Case Western Reserve University School of Graduate Studies / OhioLINK, 1992. http://rave.ohiolink.edu/etdc/view?acc_num=case1056554068.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Reese, Sven H. "Adaptive methods for continuous and discontinuous damage modeling in fracturing solids /." Hannover : IBNM, 2007. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=016312191&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Salleh, Ramli. "Monitoring of damage in continuous fibre reinforced composites by using acoustic emission." Thesis, University of Manchester, 1996. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.488255.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Yang, Fangtao. "Simulation of continuous damage and fracture in metal-forming processes with 3D mesh adaptive methodology." Thesis, Compiègne, 2017. http://www.theses.fr/2017COMP2385/document.

Full text

Abstract:

Ces travaux s'inscrivent dans le cadre des recherches menées dans le cadre d'une collaboration entre le laboratoire Roberval de l'Université de Technologie de Compiègne et l'équipe dans le cadre du projet ANR-14-CE07-0035 LASMIS de l'Institut Charles Delaunay de l'Université de Technologie de Troyes. Nous présentons dans ces travaux une h-méthodologie adaptative tridimensionnelle des éléments finis afin de représenter l'initiation et la propagation des fissures dans des matériaux ductiles. Un modèle élasto-plastique couplé à l'endommagement isotrope proposé par l'équipe du LASMIS/UTT est utili

APA, Harvard, Vancouver, ISO, and other styles

7

Thiriot, Kathleen Nichole. "The Effect of Photobiomodulation Therapy on Exercise-Induced Muscle Damage." BYU ScholarsArchive, 2018. https://scholarsarchive.byu.edu/etd/6743.

Full text

Abstract:

Purpose: To explore the difference between continuous and pulsed photobiomodulation (PBMT) versus a placebo treatment when using a red-blue light combination over multiple treatment sessions to decrease the symptoms of muscle damage in the quadriceps muscle after a bout of muscle damaging exercise. Methods: Thirty-six healthy, nonactive male and female participants were randomly assigned to one of three groups: continuous PBMT, pulsed PBMT, and placebo treatment. Participants were assessed for muscle damage with knee extension maximal isometric and isokinetic contractions, as well as Visual An

APA, Harvard, Vancouver, ISO, and other styles

8

DATTA, SAURABH. "ACTIVE FIBER COMPOSITE CONTINUOUS SENSORS FOR STRUCTURAL HEALTH MONITORING." University of Cincinnati / OhioLINK, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1061293378.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Gundmi, Satish Sajjan. "Continuous Time Fatigue Modelling for Non-proportional Loading." Thesis, Linköpings universitet, Mekanik och hållfasthetslära, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-164950.

Full text

Abstract:

Fatigue analysis is a critical stage in the design of any structural component. Typically fatigue is analysed during post-processing, but as the size of the analysed component increases, the amount of data stored for the analysis increases simultaneously. This increases the computational and memory requirements of the system, intensifying the work load on the engineer. A continuum mechanics approach namely ’Continuous time fatigue model’, for fatigue analysis is available in a prior study which reduces the computational requirements by simultaneously computing fatigue along with the stress. Th

APA, Harvard, Vancouver, ISO, and other styles

10

Denaux, Matthieu. "Simulation numérique de la criticité à amorçage de fissure de fretting induit par un chargement vibratoire : Application aux liaisons pale/disque de turbomachine." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSEI012.

Full text

Abstract:

Le fretting est un endommagement induit par le glissement cyclique à très faible amplitude de deux corps en contact. Il se caractérise par un amorçage d’une fissure en surface, qui peut ensuite propager, menant ainsi à la rupture. Le fretting est présent dans de nombreux secteurs industriels où il constitue un critère de résistance à la fatigue plus ou moins sévère. Ce mémoire s’intéresse aux fissures de fretting qui apparaissent dans une liaison entre pale et disque d’une turbomachine. La sollicitation cyclique de contact est dans ce cas le fruit de la combinaison d’un chargement statique à u

APA, Harvard, Vancouver, ISO, and other styles

11

Canino-Vazquez, Iván R. "Aerodynamic Load Characteristics Evaluation and Tri-Axial Performance Testing on Fiber Reinforced Polymer Connections and Metal Fasteners to Promote Hurricane Damage Mitigation." FIU Digital Commons, 2009. http://digitalcommons.fiu.edu/etd/128.

Full text

Abstract:

Damages during extreme wind events highlight the weaknesses of mechanical fasteners at the roof-to-wall connections in residential timber frame buildings. The allowable capacity of the metal fasteners is based on results of unidirectional component testing that do not simulate realistic tri-axial aerodynamic loading effects. The first objective of this research was to simulate hurricane effects and study hurricane-structure interaction at full-scale, facilitating better understanding of the combined impacts of wind, rain, and debris on inter-component connections at spatial and temporal scales

APA, Harvard, Vancouver, ISO, and other styles

12

Codes, Rodrigo Nogueira de. "Estudo da MecÃnica da DanificaÃÃo Aplicada ao Concreto com Efeitos de CorrosÃo." Universidade Federal do CearÃ, 2006. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=7371.

Full text

Abstract:

A danificaÃÃo e a falha do concreto sÃo largamente investigadas no ramo da MecÃnica do Dano em Meios ContÃnuos. VÃrios modelos existem na literatura e descrevem muito bem uma variedade de fenÃmenos observados, dependendo de sua complexidade. O principal objetivo deste trabalho Ã investigar e modelar os efeitos da corrosÃo no dano e falha das propriedades do concreto. Inicialmente, foram feitos ensaios de traÃÃo e de compressÃo em alguns corpos-de- prova intactos sem que tivessem sido submetidos a nenhuma corrosÃo para determinar o comportamento mecÃnico do concreto. Outros foram submetidos a

APA, Harvard, Vancouver, ISO, and other styles

13

Потопальська, Ксенія Євгенівна. "Прогнозування надійності елементів конструкцій з локальними корозійними пошкодженнями на основі статистичної оцінки статичної та циклічної міцності". Thesis, Національний технічний університет "Харківський політехнічний інститут", 2019. http://repository.kpi.kharkov.ua/handle/KhPI-Press/42738.

Full text

Abstract:

Дисертація на здобуття наукового ступеня кандидата технічних наук за спеціальністю 05.02.09 – динаміка та міцність машин. – Національний технічний університет "Харківський політехнічний інститут", Харків, 2019. Дисертаційна робота присвячена розв’язанню актуальної науково-прикладної задачі, яка полягає у розвитку методів комп’ютерного аналізу залишкової міцності та прогнозування надійності елементів конструкцій енергетичного машинобудування, які за час тривалої експлуатації отримали корозійне зношення чи локальні пошкодження. Дослідження здійснені в рамках статистичних методів моделювання, а о

APA, Harvard, Vancouver, ISO, and other styles

14

Bandini, Chiara. "FE-numerical modelling of damage in wood using continuum damage mechanics." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018.

Find full text

Abstract:

In this thesis, the mechanical behavior of a timber joint has been studied. The main task is to model the mechanical behavior of the joint as good as possible. To be able to solve the numerical instabilities of the timber joints, a deeper look needs to be done to the modelling of the wooden material and the steel wood contact. For this thesis a previously developed 3D numerical damage model of wood has been studied. This model has been elaborated by Sandhaas(2012) and it describes crack initiation and propagation of the material based on the concepts of continuum damage mechanics. The basic ma

APA, Harvard, Vancouver, ISO, and other styles

15

Teixeira, Josiele da Silva. "Identificação de danos estruturais via método de Monte Carlo com cadeias de Markov." Universidade do Estado do Rio de Janeiro, 2014. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=6733.

Full text

Abstract:

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>O presente trabalho apresenta um estudo referente à aplicação da abordagem Bayesiana como técnica de solução do problema inverso de identificação de danos estruturais, onde a integridade da estrutura é continuamente descrita por um parâmetro estrutural denominado parâmetro de coesão. A estrutura escolhida para análise é uma viga simplesmente apoiada do tipo Euler-Bernoulli. A identificação de danos é baseada em alterações na resposta impulsiva da estrutura, provocadas pela presença dos mesmos. O problema direto é resolvido através

APA, Harvard, Vancouver, ISO, and other styles

16

Eskandari, Hamid. "Rate-dependent continuum damage modeling of composite materials." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0024/NQ50155.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Eskandari, H. (Hamid). "Rate-dependent continuum damage modeling of composite materials." Thesis, McGill University, 1998. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=35696.

Full text

Abstract:

A three-dimensional, phenomenological, tensorial, isotropic, damage model is developed in the framework of continuum damage mechanics for materials whose behavior is governed by elastic deformation coupled with damage. The model was then extended to include isotropic damage for anisotropic materials, as well as rate-dependency behavior caused by damage evolution. The shortcomings of the commonly used scalar variable, as representative of isotropic damage are discussed. It is shown that isotropic damage is best represented by an isotropic tensor of rank four. The damage evolution equations are

APA, Harvard, Vancouver, ISO, and other styles

18

Yue, Zhenming. "Ductile damage prediction in sheet metal forming processes." Thesis, Troyes, 2014. http://www.theses.fr/2014TROY0025/document.

Full text

Abstract:

L'objectif de ce travail est de proposer un modèle de comportement avec endommagement ductile pour la simulation des procédés de mise en forme de tôles minces qui peut bien représenter le comportement des matériaux sous des trajets de chargement complexes en grandes déformations plastiques. Basé sur la thermodynamique des processus irréversibles, les équations de comportement couplé à l’endommagement tiennent compte des anisotropies initiales et induites, de l’écrouissage isotrope et cinématique et de l’endommagement isotrope ductile. Les effets de fermeture des microfissures, de triaxialité d

APA, Harvard, Vancouver, ISO, and other styles

19

俞立剛 and Ligang Yu. "Orthotropic damage models for fatigue crack initiation andpropagation." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1993. http://hub.hku.hk/bib/B31233995.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Lacy, Thomas E. Jr. "Distribution effects in damage mechanics." Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/15937.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Yu, Ligang. "Orthotropic damage models for fatigue crack initiation and propagation /." [Hong Kong : University of Hong Kong], 1993. http://sunzi.lib.hku.hk/hkuto/record.jsp?B13570377.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Pelà, Luca. "Continuum damage model for nonlinear analysis of masonry structures." Doctoral thesis, Universitat Politècnica de Catalunya, 2009. http://hdl.handle.net/10803/30327.

Full text

Abstract:

The present work focuses on the formulation of a Continuum Damage Mechanics model for nonlinear analysis of masonry structural elements. The material is studied at the macro-level, i.e. it is modelled as a homogeneous orthotropic continuum. The orthotropic behaviour is simulated by means of an original methodology, which is based on nonlinear damage constitutive laws and on the concept of mapped tensors from the anisotropic real space to the isotropic fictitious one. It is based on establishing a one-to-one mapping relationship between the behaviour of an anisotropic real material and that of

APA, Harvard, Vancouver, ISO, and other styles

23

PELA', Luca. "CONTINUUM DAMAGE MODEL FOR NONLINEAR ANALYSIS OF MASONRY STRUCTURES." Doctoral thesis, Università degli studi di Ferrara, 2009. http://hdl.handle.net/11392/2389195.

Full text

Abstract:

The present work focuses on the formulation of a Continuum Damage Mechanics model for nonlinear analysis of masonry structural elements. The material is studied at the macro-level, i.e. it is modelled as a homogeneous orthotropic continuum. The orthotropic behaviour is simulated by means of an original methodology, which is based on nonlinear damage constitutive laws and on the concept of mapped tensors from the anisotropic real space to the isotropic fictitious one. It is based on establishing a one-to-one mapping relationship between the behaviour of an anisotropic real material and

APA, Harvard, Vancouver, ISO, and other styles

24

Fason, William Ernest Barnes Robert W. "Static load testing of a damaged, continuous prestressed concrete bridge." Auburn, Ala, 2009. http://hdl.handle.net/10415/1582.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Liu, Ming. "Multidimensional damage state identification using phase space warping /." View online ; access limited to URI, 2005. http://0-wwwlib.umi.com.helin.uri.edu/dissertations/dlnow/3188065.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Soyarslan, Celal. "Modelling Damage For Elastoplasticity." Phd thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12610300/index.pdf.

Full text

Abstract:

A local isotropic damage coupled hyperelastic-plastic framework is formulated in principal axes where thermo-mechanical extensions are also addressed. It is shown that, in a functional setting, treatment of many damage growth models, including ones originated from phenomenological models (with formal thermodynamical derivations), micro-mechanical models or fracture criteria, proposed in the literature, is possible. Quasi-unilateral damage evolutionary forms are given with special emphasis on the feasibility of formulations in principal axes. Local integration procedures are summarized starting

APA, Harvard, Vancouver, ISO, and other styles

27

Ngwangwa, Harry Magadhlela. "Assessment of structural damage using operational time responses." Pretoria : [s.n.], 2004. http://upetd.up.ac.za/thesis/available/etd-01312006-141711.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Priston, Ann-Marie. "Evaluation of stress induced damage in composite material." Thesis, Nottingham Trent University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.389766.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

王軍 and Chun Wang. "Development of an anisotropic damage mechanics model in ductile fracture." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1987. http://hub.hku.hk/bib/B31231378.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Wang, Chun. "Development of an anisotropic damage mechanics model in ductile fracture /." [Hong Kong : University of Hong Kong], 1987. http://sunzi.lib.hku.hk/hkuto/record.jsp?B12362864.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Williams, Kevin Vaughan. "A physically-based continuum damage mechanics model for numerical prediction of damage growth in laminated composite plates." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0010/NQ39002.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Bouffard, Patrice. "Externally prestressing the remaining span of severely damaged continuous concrete beams." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0006/MQ44899.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

劉英傑 and Yingjie Liu. "Damage characterization of multi-directional laminates with matrix cracks and delamination." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1996. http://hub.hku.hk/bib/B31235104.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

Liu, Ying-jie. "Damage characterization of multi-directional laminates with matrix cracks and delamination /." Hong Kong : University of Hong Kong, 1996. http://sunzi.lib.hku.hk/hkuto/record.jsp?B16504434.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Saha, Reema. "Investigation of a continuum damage model using experimental and numerical techniques." Diss., Georgia Institute of Technology, 1995. http://hdl.handle.net/1853/12542.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Ahci, Elif. "Modeling of viscoelasticity and damage in composite laminates by continuum thermodynamics." Diss., Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/12434.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Ho, Kwang-Il. "An anisotropic continuum damage model for creep-dominated, multiaxial loading histories." Diss., Georgia Institute of Technology, 1987. http://hdl.handle.net/1853/20043.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Alcazar, Hermann E. "Durability prediction of structural composites through a continuum damage mechanics approach." Morgantown, W. Va. : [West Virginia University Libraries], 2010. http://hdl.handle.net/10450/10868.

Full text

Abstract:

Thesis (Ph. D.)--West Virginia University, 2010.<br>Title from document title page. Document formatted into pages; contains xiv, 176 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 119-125).

APA, Harvard, Vancouver, ISO, and other styles

39

Hayward, Erin M. G. "Atomistic studies on irradiation damage in iron." Thesis, Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/34004.

Full text

Abstract:

Two topics involving irradiation damage in alpha-iron have been considered. First, damage cascades representative of those that would be induced by radiation have been simulated using molecular dynamics (MD). The number and type of defects produced are compared for pure iron and iron with a small hydrogen concentration. Second, the inter- action energy between point defects and line dislocations has been calculated for a number of configurations, using both molecular statics methods and calculations based on linear elastic continuum theory and the dipole force tensor. Results from both methods

APA, Harvard, Vancouver, ISO, and other styles

40

Singh, Chandra Veer. "Multiscale modeling of damage in multidirectional composite laminates." Thesis, [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-2312.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

李德利 and Deli Li. "Thermodynamic formulation for damaging materials." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1993. http://hub.hku.hk/bib/B31233764.

Full text

APA, Harvard, Vancouver, ISO, and other styles

42

Reberg, Andrew Steven. "An Anisotropic Damage Mechanics Model for Concrete with Applications for Fatigue Loading and Freeze-Thaw Effects." Thesis, North Dakota State University, 2013. https://hdl.handle.net/10365/26994.

Full text

Abstract:

It is well known that the formation and propagation of microcracks within concrete is anisotropic in nature, and has a degrading effect on its mechanical performance. In this thesis an anisotropic damage mechanics model is formulated for concrete which can predict the behavior of the material subjected to monotonic loading, fatigue loading, and freeze-thaw cycles. The constitutive model is formulated using the general framework of the internal variable theory of thermodynamics. Kinetic relations are used to describe the directionality of damage accumulation and the associated softening of mech

APA, Harvard, Vancouver, ISO, and other styles

43

Li, Deli. "Thermodynamic formulation for damaging materials /." [Hong Kong : University of Hong Kong], 1993. http://sunzi.lib.hku.hk/hkuto/record.jsp?B1367173X.

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

Gokulanandam, Prabu. "Homogenization based Continuum Damage Models for Composites under Monotonic and Cyclic Loading." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1306951968.

Full text

APA, Harvard, Vancouver, ISO, and other styles

45

Zhao, Yuchen. "Multi-scale study of mechanical behaviour of two-phase materials during large deformation and ductile damage." Thesis, Troyes, 2017. http://www.theses.fr/2017TROY0018.

Full text

Abstract:

Cette thèse est dédiée à l’étude du comportement élasto-plastique des matériaux polycristallins multiphasés ainsi que de l’endommagement ductile à différentes échelles. Les hétérogénéités microscopiques ont une influence importante sur la réponse mécanique macroscopique des matériaux. Et l’endommagement ductile est encore difficile à mesurer aux échelles fines. Cette thèse traite des problématiques suivantes : 1. L’évolution du comportement des phases et des grains sous chargements jusqu’à la rupture.2. L’influence de l’hétérogénéité intrinsèque au niveau micro, sur le comportement macroscopiq

APA, Harvard, Vancouver, ISO, and other styles

46

Hassan, Noha Mohamed. "Damage Development in Static and Dynamic Deformations of Fiber-Reinforced Composite Plates." Diss., Virginia Tech, 2005. http://hdl.handle.net/10919/30171.

Full text

Abstract:

A three-dimensional finite element code to analyze coupled thermomechanical deformations of composites has been developed. It incorporates geometric nonlinearities, delamination between adjoining layers, and damage due to fiber breakage, fiber/matrix debonding, and matrix cracking. The three damage modes are modeled using the theory of internal variables and the delamination by postulating a failure envelope in terms of the transverse stresses; the damage degrades elastic moduli. The delamination of adjoining layers is simulated by the nodal release technique. Coupled nonlinear partial diffe

APA, Harvard, Vancouver, ISO, and other styles

47

Gyllenskog, James D. "Fatigue Life Analysis of T-38 Aileron Lever Using a Continuum Damage Approach." DigitalCommons@USU, 2010. https://digitalcommons.usu.edu/etd/747.

Full text

Abstract:

In a recent investigation conducted by the United States Air Force, the mechanical failure of the aileron lever, manufactured from 2014-T6 aluminum, caused the fatal mishap of a T-38 trainer aircraft. In general the locations of cracks are unknown and must be determined by simulation. In this study we propose to use a continuum damage modeling approach to determine the degradation and damage in a material as the number of cycles of loading increases. This approach successfully predicts the location of crack initiation, propagation path, and propagation rate. A stress-based model in conjunct

APA, Harvard, Vancouver, ISO, and other styles

48

Tashman, Laith. "Microstructural viscoplastic continuum model for asphalt concrete." Diss., Texas A&M University, 2003. http://hdl.handle.net/1969.1/313.

Full text

Abstract:

This dissertation presents the development of an anisotropic viscoplastic continuum damage model to describe the permanent deformation of asphalt pavements. The model is developed to account for several phenomena that influence the permanent deformation of Asphalt Concrete (AC) at high temperatures. These phenomena include strain rate dependency, confining pressure dependency, dilation, aggregate friction, anisotropy, and damage. The model is based on Perzyna's theory of viscoplasticity with Drucker-Prager yield function modified to account for the microstructure anisotropy and damage. A para

APA, Harvard, Vancouver, ISO, and other styles

49

Jebahi, Mohamed. "Discrete-continuum coupling method for simulation of laser-inducced damage in silica glass." Thesis, Bordeaux 1, 2013. http://www.theses.fr/2013BOR14911/document.

Full text

Abstract:

Une méthode de couplage continu-discret a été développée pour simuler les mécanismes complexes d'endommagement de la silice soumise à un choc laser de haute puissance. Dans un premier temps, une classification des méthodes numériques existantes a été faite pour choisir celles les mieux adaptées à la simulation du comportement sous choc de la silice. Comme résultat de cette classification, deux méthodes ont été retenues: la méthode des éléments discrets (DEM) et la méthode des éléments naturels contraints (CNEM). Ces méthodes sont alors couplées en se basant sur la technique dite "Arlequin". Pu

APA, Harvard, Vancouver, ISO, and other styles

50

Nofal, Mostafa. "Continuum damage mechanics for plain, fibre-reinforced, and reinforced concrete materials and structures." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/NQ26860.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!