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Littérature scientifique sur le sujet « Multiaxial fatigue of rubber »

Auteur : Grafiati

Publié le 27 avril 2023

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Articles de revues sur le sujet "Multiaxial fatigue of rubber"

Poisson, J. L., S. Méo, F. Lacroix, G. Berton et N. Ranganathan. « MULTIAXIAL FATIGUE CRITERIA APPLIED TO A POLYCHLOROPRENE RUBBER ». Rubber Chemistry and Technology 85, n^o 1 (1 mars 2012) : 80–91. http://dx.doi.org/10.5254/1.3672431.

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Abstract Due to their interesting mechanical behavior and their diversity, rubber materials are more and more used in industry. Indeed, formulating a multiaxial fatigue criterion to predict fatigue lives of rubber components constitutes an important objective to conceive rubber products. An experimental campaign is developed here to study the multiaxial fatigue behavior of polychloroprene rubber. To reproduce multiaxial solicitations, combined tension–torsion tests were carried out on a dumbbell-type specimen (an axisymmetric rubber part bonded to metal parts with a reduced section at mid-height), with several values of phase angles between tension and torsion. A constitutive model is needed to calculate multiaxial fatigue criteria, and then analyze fatigue results. A large strain viscoelastic model, based on the tension–torsion kinematics, is then used to determine the material's stress–strain law. Dissipated energy density is introduced as a multiaxial fatigue criterion, and compared with those usually used in the literature. A multiaxial Haigh diagram is then built to observe the influence of Rd-ratio (ratio of the axial displacement's minimum to the axial displacement's maximum) on the multiaxial fatigue lives of polychloroprene rubber.

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Mars, W. V. « Multiaxial Fatigue Crack Initiation in Rubber ». Tire Science and Technology 29, n^o 3 (1 juillet 2001) : 171–85. http://dx.doi.org/10.2346/1.2135237.

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Abstract This paper describes a new model for predicting multiaxial fatigue crack initiation in rubber. The work is motivated by a need to predict crack initiation life in tires, based on strain histories obtained via finite element analysis. The new model avoids the need to explicitly include cracks in the finite element model, and applies when the cracks are small compared to the strain gradient. The model links the far-field strain state to the energy release rate of an assumed intrinsic flaw. This is accomplished through a new parameter, the cracking energy density. The cracking energy density is the portion of the total elastic strain energy density that is available to be released on a given material plane. The model includes an algorithm to select the material plane which minimizes the life prediction for a given strain history. The consequences of the theory for simple strain histories are presented, as well as predictions for more complicated histories. The theory is compared with published data, and with new results from recent combined axial/torsion fatigue experiments.

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ZINE, A., N. BENSEDDIQ, M. NAIT ABDELAZIZ, N. AIT HOCINE et D. BOUAMI. « Prediction of rubber fatigue life under multiaxial loading ». Fatigue Fracture of Engineering Materials and Structures 29, n^o 3 (mars 2006) : 267–78. http://dx.doi.org/10.1111/j.1460-2695.2005.00989.x.

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SAINTIER, N., G. CAILLETAUD et R. PIQUES. « Multiaxial fatigue life prediction for a natural rubber ». International Journal of Fatigue 28, n^o 5-6 (mai 2006) : 530–39. http://dx.doi.org/10.1016/j.ijfatigue.2005.05.011.

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Ranganathan, Narayanaswami. « The Energy Based Approach to Fatigue ». Advanced Materials Research 891-892 (mars 2014) : 821–26. http://dx.doi.org/10.4028/www.scientific.net/amr.891-892.821.

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This paper presents the energy based approaches developed to describe different aspects of fatigue. Different topics covered include fatigue crack initiation, crack initiation at a notch, multiaxial fatigue and fatigue crack propagation. Specific examples treated include, crack initiation at a notch, cracking at solder joint in electronic application, fatigue life estimation in a synthetic rubber and fatigue crack propagation in a metallic material.

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Wang, Y. P., X. Chen et W. W. Yu. « Microscopic mechanism of multiaxial fatigue of vulcanised natural rubber ». Plastics, Rubber and Composites 40, n^o 10 (décembre 2011) : 491–96. http://dx.doi.org/10.1179/1743289811y.0000000012.

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Tobajas, Rafael, Daniel Elduque, Elena Ibarz, Carlos Javierre et Luis Gracia. « A New Multiparameter Model for Multiaxial Fatigue Life Prediction of Rubber Materials ». Polymers 12, n^o 5 (23 mai 2020) : 1194. http://dx.doi.org/10.3390/polym12051194.

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Most of the mechanical components manufactured in rubber materials experience fluctuating loads, which cause material fatigue, significantly reducing their life. Different models have been used to approach this problem. However, most of them just provide life prediction only valid for each of the specific studied material and type of specimen used for the experimental testing. This work focuses on the development of a new generalized model of multiaxial fatigue for rubber materials, introducing a multiparameter variable to improve fatigue life prediction by considering simultaneously relevant information concerning stresses, strains, and strain energies. The model is verified through its correlation with several published fatigue tests for different rubber materials. The proposed model has been compared with more than 20 different parameters used in the specialized literature, calculating the value of the R2 coefficient by comparing the predicted values of every model, with the experimental ones. The obtained results show a significant improvement in the fatigue life prediction. The proposed model does not aim to be a universal and definitive approach for elastomer fatigue, but it provides a reliable general tool that can be used for processing data obtained from experimental tests carried out under different conditions.

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MARS, W., et A. FATEMI. « Multiaxial stress effects on fatigue behavior of filled natural rubber ». International Journal of Fatigue 28, n^o 5-6 (mai 2006) : 521–29. http://dx.doi.org/10.1016/j.ijfatigue.2005.07.040.

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Zine, A., N. Benseddiq et M. Naït Abdelaziz. « Rubber fatigue life under multiaxial loading : Numerical and experimental investigations ». International Journal of Fatigue 33, n^o 10 (octobre 2011) : 1360–68. http://dx.doi.org/10.1016/j.ijfatigue.2011.05.005.

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Poisson, J. L., S. Méo, F. Lacroix, G. Berton, M. Hosséini et N. Ranganathan. « COMPARISON OF FATIGUE CRITERIA UNDER PROPORTIONAL AND NON-PROPORTIONAL MULTIAXIAL LOADING ». Rubber Chemistry and Technology 91, n^o 2 (1 avril 2018) : 320–38. http://dx.doi.org/10.5254/rct.18.82696.

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ABSTRACTOwing to their interesting mechanical behavior and their diversity, rubberlike materials are more and more used in the industry. Previous works (Poisson et al.) presented an important experimental investigation on the multiaxial fatigue of polychloroprene rubber, with both proportional and non-proportional combinations of tension and torsion loads (with a large range of loads and three different phase angles: 0°; 90°, 180°). A fatigue criterion, based on the dissipated energy density (DED) was introduced. Comparing this parameter to the most important criteria available on literature—which are the strain energy density (SED), the cracking energy density (CED), and the Eshelby tensor—in their accuracy allows one to predict fatigue life of rubberlike material. All the predictors are computed with an analytical viscoelastic model based on the kinematics of a combined tension and torsion loading applied on a cylinder. This cylinder represents the central part of the axisymetric dumbbell specimen, and the model was identified with a polychloroprene rubber. It is finally shown that the DED and CED reach more conclusive results, provided the structure, the material, and the loads investigated.

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Thèses sur le sujet "Multiaxial fatigue of rubber"

Hallett, Joseph F. « Multiaxial strength and fatigue of rubber compounds ». Thesis, Loughborough University, 1997. https://dspace.lboro.ac.uk/2134/6759.

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Despite real applications having complex triaxial loading, current physical test methods to predict component behaviour are mainly uniaxial. But previous work has indicated that there may be substantial differences between the rubber's uniaxial and biaxial behaviour and hence through incompressibility, its triaxial properties. In order to quantify these differences equipment was developed to assess the biaxial performance of selected rubber compounds using inflated circular diaphragms. Although allowing higher extensions than stretching a sheet in its own plane, such tests do not allow stress and strain to be measured directly, requiring careful marking of the sample, or calculation through simulation. On the grounds of perceived accuracy, the latter was chosen, requiring accurate, general, elastic constants to high extensions. In this thesis the development of this apparatus, along with the associated techniques is described, along with the development of a new elastic theory. The tests on this new apparatus indicated significant differences between the uniaxial and biaxial strength and fatigue of rubber. In a unimdal test natural rubber (NR) is much stronger than styrene butadiene rubber (SBR) below 35pphr of carbon black. In a biaxial test though the converse is true, although there is some evidence of crystallinity in NR during the biaxial test. Distinct differences were also found in fatigue between the two load cases. When plotted against extension ratio the biaxial life of SBR was found to increase, while the converse is true for NR. However if life is plotted against a function of strain energy, the biaxial life of both polymers increases for a given energy.

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Warneboldt, Iona. « Multiaxial fatigue design of elastomeric parts using Equivalent Fatigue Loads ». Electronic Thesis or Diss., Brest, École nationale supérieure de techniques avancées Bretagne, 2022. http://www.theses.fr/2022ENTA0002.

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Trois étapes sont mises en oeuvre ici : la méthode de localisation, la fonction de dommage matériau et le processus de détermination des chargements équivalents en fatigue (CEF). De nombreux essais de fatigue ont été réalisés (415 au total) pour étudier le comportement en fatigue sous chargement multiaxial relaxant et non relaxant sur des éprouvettes de caoutchouc naturel. La durée de vie et les caractéristiques des fissures sont analysées pour finalement introduire un critère de fatigue approprié basé sur le plan critique et permettant de rendre compte de l'effet de déformation moyenne. Ce critère est généralisé à travers une méthode originale de recherche du plan critique. Pour estimer la réponse mécanique locale (méthode de localisation), une méthode de couplage des axes adaptée à la nature non linéaire des structures élastomères est proposée. Elle est basée sur la décomposition multiplicative des tenseurs du gradient de la déformation. Ces deux étapes sont ensuite mises en oeuvre dans le cadre du processus de détermination du CEF. Pour cela, une méthode d'optimisation globale est ajoutée pour déterminer les chargements simplifiés, induisant partout localement le même endommagement en fatigue dans la structure étudiée que le RLD. Le temps de calcul de cette optimisation est réduit en ne considérant qu'un sous-ensemble de points matériels, les plus endommagés, pour la détermination du CEF. Enfin, la méthode a été testée sur une éprouvette afin de souligner ses capacités et de valider l'approche
This thesis introduces an Equivalent Fatigue Load (EFL) approach for the multiaxial fatigue design of elastomeric parts. As direct Finite Element Analysis (FEA) calculations of automotive in-service loads (Road Load Data (RLD)) are too expensive, the objective is to derive simplified load blocks as a realistic input for numerical damage calculations. Three streps are applied for this method: the localization method, the material damage function and the EFL determination process. Various fatigue tests have been conducted (415 samples) to study the fatigue behavior of this complex type of relaxing and non-relaxing multiaxial loading on natural rubber specimens. Lifetime and crack features are analyzed to eventually introduce an appropriate critical planebased fatigue measure and to establish a novel mean strain effect model. This criterion is generalized throughout an original critical plane search method. To estimate the local mechanical response (localization method), this thesis identifies an axes-coupling method that is fitted for the nonlinear nature of elastomeric structures. It is based on the multiplicative decomposition of the deformation gradient tensors. These two steps are then implemented in the framework of the EFLdetermination process. For this, a global optimization method is added to determine the simplified load blocks, causing locally the same fatigue behavior in the given structure. The computational costs of this optimization are reduced by only considering a subset of the most damaged material points for EFLdetermination. Finally, the method has been challenged on a specimen to outline its capabilities and to validate the approach

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Saintier, Nicolas. « Fatigue multiaxiale dans un élastomère de type NR : mécanismes d'endommagement et critère local d'amorçage de fissure ». Phd thesis, Paris, ENMP, 2001. https://pastel.archives-ouvertes.fr/tel-00397910.

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Liu, Mu-Hsin. « Multiaxial Fatigue Testing Machine ». Ohio University / OhioLINK, 2002. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1266241731.

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Swalla, Dana Ray. « Fretting fatigue damage prediction using multiaxial fatigue criteria ». Thesis, Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/17033.

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FEIFERIS, ANDRE DOS REIS. « STRUCTURAL EVALUATION OF CRANKSHAFT UNDER MULTIAXIAL FATIGUE ». PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2018. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=35967@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO
COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR
PROGRAMA DE SUPORTE À PÓS-GRADUAÇÃO DE INSTS. DE ENSINO
PROGRAMA DE SUPORTE À PÓS-GRADUAÇÃO DE INSTITUIÇÕES COMUNITÁRIAS DE ENSINO PARTICULARES
Eixos de virabrequim estão sujeitos a carregamentos multiaxiais quando em serviço. Por se tratar de um estado complexo de tensões, os modelos aplicados na determinação da vida em fadiga de tais componentes devem permitir, também, uma abordagem multiaxial, mais avançados do que aqueles adotados para carregamentos uniaxiais. O objetivo deste trabalho foi prever a falha em serviço de eixos virabrequins de unidades geradoras Diesel ou gás de plantas termoelétricas. Falhas recentemente ocorridas em eixos virabrequins no parque termoelétrico nacional justificam o presente estudo, para garantir eficiência e segurança nas operações industriais. Com base no método de elementos finitos, foram calculadas as tensões atuantes em um eixo virabrequim de unidade geradora a gás, com 10 mancais, duas bielas por mancal e fabricado com aço estrutural DIN 34CrNiMo6. Em sequência, adotando-se estas tensões atuantes calculadas, foram aplicados diversos critérios de fadiga para prever sua falha. Para tal, adotaram-se os modelos de Papadopoulos, Findley, Matake, McDiarmid, Carpinteri e Spagnoli, Liu e Mahadevan, Mises, Sines e Crossland, todos de fadiga de alto ciclo, baseados no plano crítico ou na tensão de von Mises. Propriedades de resistência à fadiga do material foram retiradas da literatura. Os resultados obtidos indicaram que o componente é seguro quando avaliado usando tais critérios.
Crankshaft axles are subject to multiaxial loading when in service. Because the resulting state of stresses is complex, models applied to determining the fatigue life of such components employ a multiaxial approach as well, more advanced than those adopted for uniaxial loads. The objective of this work is to predict the failure in service of crankshafts of diesel or gas generating units of thermoelectric plants. Crankshafts reported recent failures in the national thermoelectric power plant justifies the present study, to guarantee efficiency and safety in such industrial operations. Based on the finite element method, the resulting stresses on a DIN 34CrNiMo6 structural steel gas generating unit crankshaft, with 10 bearings, two connecting rods per bearing were calculated. Using these finite element calculated stresses, several fatigue criteria were applied to predict this cranckshaft structural failure. Models due to Papadopoulos, Findley, Matake, McDiarmid, Carpinteri and Spagnoli, Liu and Mahadevan, Mises, Sines and Crossland, all of high cycle fatigue based on the critical plane or von Mises strain, were adopted. Material fatigue properties used in the analyses were compiled from specidized literature. Obtained results indicated that the component considered is safe regarding fatigue loadings, as evaluated using such criteria.

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Bold, P. E. « Multiaxial fatigue crack growth in rail steel ». Thesis, University of Sheffield, 1990. http://etheses.whiterose.ac.uk/14807/.

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In the introduction to a recent symposium on rolling contact fatigue, R.A.Smith stated that it was difficult to apply our greatly increased understanding of metal fatigue, to rolling contact fatigue, because of "the apparent lack of alternating tensile stresses to drive the cracks." He went on to say "alternating shear stresses are easily found, but the reproduction of continuous crack growth controlled by shear (Mode II in fracture mechanics terms), has proved to be near impossible." This project has demonstrated that under specific conditions this mode of growth does occur. The project began by studying rolling contact fatigue defects, in particular the 'squat' defect in railway lines, and the stress analyses that have been performed on them. It was concluded that the largest stress cycle experienced by the cracks must be a shear stress. It. series of tests were then performed that loaded a crack in pure shear, or a mixture of tension and shear, looking at the effects of using fully reversed shear loading, and the effects of applying tensile mean stresses to reduce the friction on the crack flanks. However these tests all produced less than one millimetre of mode II growth, before the cracks arrested or branched. The final series of tests however applied a tensile load cycle before each shear load cycle. This time coplanar growth was produced, that is the crack grew in the direction of the maximum shear stress. This type of load cycle is a simplification of the load cycle calculated by Bower and Johnson of Cambridge University, where the tensile load is produced by fluid trapped in the crack. Two crack growth rate formulae were produced that fitted the data, indicating that the growth rate was dependent on both the tensile and the shear parts of the cycle.

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Kawamoto, Jiro. « Fatigue of rubber composites ». Thesis, Massachusetts Institute of Technology, 1988. http://hdl.handle.net/1721.1/14566.

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Juneja, Lokesh Kumar. « Multiaxial fatigue damage model for random amplitude loading histories ». Thesis, Virginia Tech, 1992. http://hdl.handle.net/10919/41522.

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In spite of many multiaxial fatigue life prediction methods proposed over decades of research, no universally accepted approach yet exists. A multiaxial fatigue damage model developed for approximately proportional random amplitude loading is proposed in this study. A normal strain based analysis incorporating the multiaxial state of stress is conducted along a critical orientation assuming a constant strain ratio. The dominant deformation direction is chosen to be the critical orientation which is selected with the help of a principal strain histogram generated from the given multiaxial loading history. The uniaxial cyclic stress-strain curve is modified for the biaxial state of stress present along the critical orientation for the plane stress conditions. Modified versions of Morrow's and of Smith, Watson, and Topper's (SWT) mean-stress models are used to incorporate mean stresses. A maximum shear strain based analysis is, in addition, conducted to check for the shear dominant fatigue crack growth possibility along the critical direction. The most damaging maximum shear strain is chosen after analyzing the in-plane and the two out-of-plane shear strains.

The minimum of the two life values obtained from SWT model and the shear strain model is compared with the life estimated by the proposed model with the modified Morrow's mean stress model. The former is essentially the life predicted by Socie. The results of the proposed model, as reduced to the uniaxial case, are also compared with the experimental data obtained by conducting one-channel random amplitude loading history experiments.
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Sharifimehr, Shahriar. « Multiaxial Fatigue Analysis under Complex Non-proportional Loading Conditions ». University of Toledo / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1544787705876488.

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Livres sur le sujet "Multiaxial fatigue of rubber"

Socie, Darrell. Multiaxial Fatigue. Warrendale, PA : SAE International, 1999. http://dx.doi.org/10.4271/r-234.

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Miller, KJ, et MW Brown, dir. Multiaxial Fatigue. 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959 : ASTM International, 1985. http://dx.doi.org/10.1520/stp853-eb.

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International Conference on Biaxial/Multiaxial Fatigue (4th 1994 Saint-Germain en Laye, France). Multiaxial fatigue and design. London : Mechanical Engineering, 1996.

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McDowell, DL, et JR Ellis, dir. Advances in Multiaxial Fatigue. 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959 : ASTM International, 1993. http://dx.doi.org/10.1520/stp1191-eb.

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1956-, McDowell David L., et Ellis Rod 1939-, dir. Advances in multiaxial fatigue. Philadelphia, PA : ASTM, 1993.

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1947-, Brown M. W., et Miller K. J, dir. Biaxial and multiaxial fatigue. London : Mechanical Engineering, 1988.

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Ewald, Macha, Będkowski W, Łagoda T et European Structural Integrity Society, dir. Multiaxial fatigue and fracture. Kidlington, Oxford : Elsevier, 1999.

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J, Miller K., Brown M. W. 1947-, ASTM Committee E-9 on Fatigue. et ASTM Committee E-24 on Fracture Testing., dir. Multiaxial fatigue : A symposium. Philadelphia, Pa : American Society for Testing and Materials, 1985.

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International Conference on Biaxial/Multiaxial Fatigue (2nd 1985 University of Sheffield). Biaxial and multiaxial fatigue. London : Mechanical Engineering Publications, 1989.

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Andrea, Carpinteri, Freitas Manuel de, Spagnoli Andrea, Instituto Superior Técnico (Lisbon, Portugal), Portugal. Ministério da Ciência e da Tecnologia. et European Structural Integrity Society, dir. Biaxial/multiaxial fatigue and fracture. Amsterdam ; Boston : Elsevier, 2003.

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Chapitres de livres sur le sujet "Multiaxial fatigue of rubber"

Ayoub, G., M. Naït Abdelaziz et F. Zaïri. « Multiaxial Fatigue of Rubbers : Comparative Study Between Predictive Tools ». Dans Proceedings of the 17th International Conference on New Trends in Fatigue and Fracture, 123–28. Cham : Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-70365-7_14.

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Blétry, Marc, et Georges Cailletaud. « Multiaxial Fatigue ». Dans Fatigue of Materials and Structures, 1–46. Hoboken, NJ, USA : John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118616994.ch1.

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Milella, Pietro Paolo. « Multiaxial Fatigue ». Dans Fatigue and Corrosion in Metals, 477–520. Milano : Springer Milan, 2012. http://dx.doi.org/10.1007/978-88-470-2336-9_9.

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Brown, M. W. « Multiaxial Fatigue Failure ». Dans Advances in Fatigue Science and Technology, 339–61. Dordrecht : Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-2277-8_14.

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Socie, Darrell. « Multiaxial Fatigue Damage Assessment ». Dans Low Cycle Fatigue and Elasto-Plastic Behaviour of Materials, 465–72. Dordrecht : Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3459-7_72.

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Shang, De Guang, Guo Qin Sun, Jing Deng et Chu Liang Yan. « Multiaxial Fatigue Damage Models ». Dans Fracture and Damage Mechanics V, 747–50. Stafa : Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-413-8.747.

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Ellyin, Fernand. « Multiaxial Fatigue--A Perspective ». Dans The Mechanical Behavior of Materials X, 205–10. Stafa : Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-440-5.205.

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Brown, R. P. « Fatigue ». Dans Physical Testing of Rubber, 203–13. Dordrecht : Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-011-0529-3_12.

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Ellul, Maria D. « Mechanical Fatigue ». Dans Engineering with Rubber, 159–203. München : Carl Hanser Verlag GmbH & ; Co. KG, 2012. http://dx.doi.org/10.3139/9783446428713.006.

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Ellyin, Fernand. « Multiaxial experimental facilities ». Dans Fatigue Damage, Crack Growth and Life Prediction, 179–204. Dordrecht : Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-009-1509-1_5.

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Actes de conférences sur le sujet "Multiaxial fatigue of rubber"

Wang, Xiao-Li, Chun-Yu Kong et Xiang-Kun Zeng. « Multiaxial fatigue life prediction of rubber materials using cracking energy density ». Dans The 2015 International Conference on Mechanics and Mechanical Engineering (MME 2015). WORLD SCIENTIFIC, 2016. http://dx.doi.org/10.1142/9789813145603_0085.

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Zarrin-Ghalami, Touhid, et Sandip Datta. « Automotive Applications Multiaxial Proving Grounds and Road Test Simulator : Durability Prediction Methodology Development and Correlation for Rubber Components ». Dans WCX SAE World Congress Experience. 400 Commonwealth Drive, Warrendale, PA, United States : SAE International, 2023. http://dx.doi.org/10.4271/2023-01-0723.

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<div class="section abstract"><div class="htmlview paragraph">Many chassis and powertrain components in the transportation and automotive industry experience multi-axial cyclic service loading. A thorough load-history leading to durability damage should be considered in the early vehicle production steps.</div><div class="htmlview paragraph">The key feature of rubber fatigue analysis discussed in this study is how to define local critical location strain time history based on nominal and complex load time histories. Material coupon characterization used here is the crack growth approach, based on fracture mechanics parameters. This methodology was utilized and presented for a truck engine mount. Temperature effects are not considered since proving ground (PG) loads are generated under isothermal high temperature and low frequency conditions without high amounts of self-heating.</div><div class="htmlview paragraph">This novel methodology for fatigue life calculation involves finding independent load channels and mapping all load history through converting single or multichannel load-displacement history into stress-strain history for a nonlinear elastic finite element model. After finding strain history, a critical plane approach, based on crack energy density, is used for life predictions. Rainflow cycle counting methodology and linear damage rules are used for load cycle characterization and damage accumulation, respectively.</div><div class="htmlview paragraph">This methodology is correlated with component proving ground vehicle testing under complete service conditions for the vehicle. Predictions are validated through analysis of hot spot high stress locations, life regime, and strain states. Comparative results of numerical predictions show reasonable correlation with experimental data.</div></div>

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Jiang, Yanyao, Tianwen Zhao, Xiaogui Wang et Zengliang Gao. « Multiaxial Fatigue of 16MnR Steel ». Dans ASME 2006 Pressure Vessels and Piping/ICPVT-11 Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/pvp2006-icpvt-11-93473.

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Uniaxial, torsion, and axial-torsion fatigue experiments were conducted on a pressure vessel steel, 16MnR, at room temperature. The uniaxial experiments were conducted using solid cylindrical specimens. Axial-torsion experiments employed thin-walled tubular specimens subjected to proportional and nonproportional loading. A critical plane multiaxial fatigue criterion recently developed was found to correlate well with all the experiments conducted for the material. In addition, the fatigue criterion correctly predicted the cracking behavior of the material subjected to different loading paths.

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Zhang, Cheng-cheng, Yuan Ren, Jing-yun Gao, Ying Li et Kun Yang. « Analysis of Multiaxial Fatigue Evaluation in Engine Components Using an Improved Multiaxial Fatigue Life Model ». Dans ASME Turbo Expo 2016 : Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/gt2016-57128.

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Current design methodologies for LCF/HCF of aero engine components are based on traditional uniaxial stress/strain methods like strain-life (ε-N), stress-life (S-N) and Goodman / Haigh diagram approaches, often applied with a wide safe factors to account for uncertainties in the understanding of multiaxial loading and other effects. With constantly striving to improve the performance and life of gas turbine engines, there is a need to increase accuracy of life prediction and reduce maintenance cost. Some multiaxial fatigue methods like Manson-McKnight, Sines, Smith-Watson-Topper etc. were developed to convert the multiaxial stresses into an equivalent uniaxial stress. This conversion simply provides the treatment of both the mean stress, the stress amplitude and directions. However, critical locations in engine components often experience significant multiaxial non-proportional loading conditions, such as blades and LP/HP shafts are subjected to HCF loading associated with mixed bending and torsional vibration modes. In this paper, the use of a new multiaxial fatigue life model was explored in the prediction of multiaxial fatigue behavior in aeronautic materials and structural steel. This new life model is based on the multiaxial S-N curve and an improved multiaxial high-cycle fatigue criterion which validated before by authors. The applied range of this new multiaxial fatigue life model were also compared with other models. Several groups of solid and hollow specimens with different ductile materials were conducted and evaluated under multiaxial loading cases. The predictions based on the proposed model give a better statistical result than other models.

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Wei, Haoyang, et Yongming Liu. « Energy-based multiaxial fatigue damage modelling ». Dans 2018 AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference. Reston, Virginia : American Institute of Aeronautics and Astronautics, 2018. http://dx.doi.org/10.2514/6.2018-0646.

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Kurath, Peter. « Multiaxial Fatigue Criteria for Spot Welds ». Dans International Congress & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States : SAE International, 1992. http://dx.doi.org/10.4271/920668.

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Hay, N. C. « Conditioned Spectral Analysis in Multiaxial Fatigue ». Dans International Congress & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States : SAE International, 1997. http://dx.doi.org/10.4271/970707.

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Kazemi, Amir, Zhijun Wu et Sayed A. Nassar. « Multiaxial Fatigue of Preloaded Threaded Fasteners ». Dans ASME 2015 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/pvp2015-45698.

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This experimental study investigates the effect of cyclic multiaxial loading on the High Cycle Fatigue (HCF) life of preloaded threaded fasteners. A special fixture is used for orienting test bolts at different angles relative to the direction of the cyclic load applied by an MTS fatigue testing system. The orientation angle converts the external cyclic load to a combined cyclic axial and shear loading on test bolts. Test data is used for creating the S-N curves for various multiaxial load combinations. The effect of cyclic stress amplitude and mean stress level are investigated.

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Liu, Yongming, et Sankaran Mahadevan. « Fatigue Life prediction under multiaxial loading ». Dans 46th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference. Reston, Virigina : American Institute of Aeronautics and Astronautics, 2005. http://dx.doi.org/10.2514/6.2005-2321.

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Curtit, F., A. Le Pecheur et J. M. Stephan. « Comparison of Fatigue Damage Criteria Applied to Multiaxial Fatigue ». Dans ASME 2008 Pressure Vessels and Piping Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/pvp2008-61735.

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The mixing tees of PWR nuclear power plant are submitted to complex cyclic thermal loadings that could lead to significant fatigue damage as observed on the RHR mixing area of Civaux 1 PWR in 1998. The characteristics of associated mechanical loading have been investigated by both experimental and numerical studies. A constant loading due to mean temperature and pressure is combined with equi-biaxial variable amplitude loading in the field of high cycle fatigue. This paper compares several fatigue damage criteria applied to both low and high cycle fatigue tests on 304 stainless steel specimens under several loading conditions according to mixing zone thermal fatigue loading amplitude. In order to focus the comparison on intrinsic qualities of the models, each criterion is evaluated directly with stress and strain measured on the specimen. The relevance of each criterion for high cycle thermal fatigue is discussed taking into considerations the precision of the results, and also the “usage cost” (including identification and complexity) and the adaptability to cumulative damage rules.

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Rapports d'organisations sur le sujet "Multiaxial fatigue of rubber"

Donovan, James A. Fatigue, Fracture and Wear Properties of Rubber. Fort Belvoir, VA : Defense Technical Information Center, janvier 1989. http://dx.doi.org/10.21236/ada204743.

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Beaver, P. W. A Review of Multiaxial Fatigue and Fracture of Fibre-Reinforced Composites. Fort Belvoir, VA : Defense Technical Information Center, janvier 1987. http://dx.doi.org/10.21236/ada191990.

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Riveros, Guillermo, Hussam Mahmoud et Santiago Lopez. Multiaxial fatigue strength of structural bolts under combined cyclic axial and shear demands. Engineer Research and Development Center (U.S.), juillet 2019. http://dx.doi.org/10.21079/11681/33270.

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Kallmeyer, Alan. Development of a Nonlinear Cumulative Fatigue Damage Methodology for Aircraft Engine Components under Multiaxial Loadings. Fort Belvoir, VA : Defense Technical Information Center, avril 2007. http://dx.doi.org/10.21236/ada589686.

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Messner, M. C., et T. L. Sham. Development of a multiaxial deformation measure and creep-fatigue damage summation for multiple load cycle types in support of an improved creep-fatigue design method. Office of Scientific and Technical Information (OSTI), juin 2019. http://dx.doi.org/10.2172/1601810.

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Lissenden, Cliff, Tasnin Hassan et Vijaya Rangari. Monitoring microstructural evolution of alloy 617 with non-linear acoustics for remaining useful life prediction ; multiaxial creep-fatigue and creep-ratcheting. Office of Scientific and Technical Information (OSTI), octobre 2014. http://dx.doi.org/10.2172/1214660.

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Hassan, Tasnim, Cliff Lissenden et Laura Carroll. Multiaxial Creep-Fatigue and Creep-Ratcheting Failures of Grade 91 and Haynes 230 Alloys Toward Addressing Design Issues of Gen IV Nuclear Power Plants. Office of Scientific and Technical Information (OSTI), avril 2015. http://dx.doi.org/10.2172/1178428.

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