Academic literature on the topic 'Schapery modeling'

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Journal articles on the topic "Schapery modeling"

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Weber, Ludger, and Reza Tavangar. "Diamond-Based Metal Matrix Composites for Thermal Management Made by Liquid Metal Infiltration — Potential and Limits." Advanced Materials Research 59 (December 2008): 111–15. http://dx.doi.org/10.4028/www.scientific.net/amr.59.111.

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Diamond-based metal matrix composites have been made based on pure Al and eutectic Ag-3Si alloy by gas pressure infiltration into diamond powder beds with the aim to maximize thermal conductivity and to explore the range of coefficient of thermal expansion (CTE) that can be covered. The resulting composites covered roughly the range between 60 and 75 vol-% of diamond content. For the Al-based composites a maximum thermal conductivity at room temperature of 7.6 W/cmK is found while for the Ag-3Si based composites an unprecedented value of 9.7 W/cmK was achieved. The CTE at room temperature vari
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Jafaripour, Mostafa, and Fathollah Taheri-Behrooz. "Creep behavior modeling of polymeric composites using Schapery model based on micro-macromechanical approaches." European Journal of Mechanics - A/Solids 81 (May 2020): 103963. http://dx.doi.org/10.1016/j.euromechsol.2020.103963.

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Ghasemi, Ahmad Reza, Komeil Hosseinpour, and Masood Mohandes. "Modeling creep behavior of carbon nanotube/fiber/polymer composite cylinders." Proceedings of the Institution of Mechanical Engineers, Part N: Journal of Nanomaterials, Nanoengineering and Nanosystems 232, no. 2-3 (2018): 49–58. http://dx.doi.org/10.1177/2397791418768576.

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In this research, the effects of multi-walled carbon nanotubes on the distribution of long-term creep strains in thick-walled multi-walled carbon nanotube/fiber/polymer three-phase laminated composites are studied. In the first step, micromechanical models are developed to calculate the elastic properties of multi-walled carbon nanotube/vinylester and multi-walled carbon nanotube/E-glass fiber/vinylester composites. Using classical lamination plate theory, equilibrium and compatibility equations and strain–displacement relations, the distribution of effective stresses is considered. Moreover,
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Hall, Richard B. "A Thermodynamic Framework for Viscoplasticity Based on Overstress (VBO)." Journal of Engineering Materials and Technology 127, no. 4 (2005): 369–73. http://dx.doi.org/10.1115/1.1924562.

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A thermodynamic framework is presented for the theory of Viscoplasticity Based on Overstress (VBO) developed by Krempl and co-workers (Krempl, E., and Ho, K., 2001, in Lemaitre Handbook of Materials Behavior Models, Academic Press, New York, pp. 336–348; 2000, in Time Dependent and Nonlinear Effects in Polymers and Composites, ASTM STP 1357, Schapery, R. A., and Sun, C. T., eds., ASTM, West Conshohocken, PA, pp. 118–137; Cernocky, E. P., and Krempl, E., 1979, Int. J. Non-Linear Mech., 14, pp. 183–203; Gomaa et al., 2004, Int. J. Solids Struct., 41, pp. 3607–3624), for anisotropic materials and
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Khurshid, Ajab. "The Application of Micromechanical Modeling to Study the Non-Linear Behavior of Flexible Pavement under Truck Loading in Pakistan." International Journal for Research in Applied Science and Engineering Technology 9, no. 9 (2021): 923–32. http://dx.doi.org/10.22214/ijraset.2021.37975.

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Abstract: This report presents the work done to create a 3D model of a pavement structure, which incorporates in a most accurately way non damaging effects of asphalt layer considering the different layers that compose the pavement structure. A series of approaches have been considered from linear viscoelastic modelling using Maxwell model via UMAT subroutine to integrated viscoelastic response using Prony series available in the built in ABAQUS material library. During this work also other effects have been considered including the viscoelastic behaviour caused by creep, which is included via
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Ananjeva, Natalia Borisovna, Eugeny Golynsky, and Lyudmila Mazanaeva. "Distribution Modeling of the Caucasian Rock Agama Paralaudakia caucasia (Eichwald, 1831), (Sauria: Agamidae) Based on an Updated Data Set." Russian Journal of Herpetology 28, no. 3 (2021): 170–74. http://dx.doi.org/10.30906/1026-2296-2021-28-3-170-174.

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We present results of analysis and predictions of the potential distribution of the Caucasian rock agama Paralaudakia caucasia (Eichwald, 1831), based on an updated data set and using a distribution model generated with software Maxent (www.cs.princeton.edu/~schapire/maxent). The model was based on an updated data set of 238 localities, including 74 new records from Daghestan and Tajikistan. According to the generated model, the most suitable habitats of the Caucasian rock agama Paralaudakia caucasia are located in the Caucasus (southeastern Ciscaucasia and eastern Transcaucasia), south Turkme
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Atchounga, Priska Kuida, Grégoire Kamdjo, Emmanuel Foadieng, and Pierre Kisito Talla. "Creep Modelling of a Material by Non-Linear Modified Schapery’s Viscoelastic Model." World Journal of Engineering and Technology 05, no. 04 (2017): 754–64. http://dx.doi.org/10.4236/wjet.2017.54063.

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Pineda, E. J., and A. M. Waas. "Modelling progressive failure of fibre reinforced laminated composites: mesh objective calculations." Aeronautical Journal 116, no. 1186 (2012): 1221–46. http://dx.doi.org/10.1017/s0001924000007612.

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Abstract A thermodynamically-based work potential theory for modelling progressive damage and failure in fibre-reinforced laminates is presented. The current, multiple-internal state variable (ISV) formulation, enhanced Schapery theory, utilises separate ISVs for modelling the effects of damage and failure. Damage is considered to be the effect of any structural changes in a material that manifest as pre-peak non-linearity in the stress versus strain response. Conversely, failure is taken to be the effect of the evolution of any mechanisms that results in post-peak strain softening. It is assu
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Ban, Hoki, Soohyok Im, and Yong-Rak Kim. "Nonlinear viscoelastic approach to model damage-associated performance behavior of asphaltic mixture and pavement structure." Canadian Journal of Civil Engineering 40, no. 4 (2013): 313–23. http://dx.doi.org/10.1139/cjce-2012-0289.

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This paper presents an integrated experimental–numerical effort to more accurately model the damage characteristics of asphalt mixtures and pavement structures than conventional elastic and (or) linear viscoelastic approaches can. To this end, Schapery's nonlinear viscoelastic constitutive model was implemented into a finite element software via user defined subroutine (user material, or UMAT) to analyze an asphalt pavement subjected to heavy truck loads. Then, a series of creep and recovery tests were conducted at various stress levels and at different temperatures to obtain the stress-depend
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Gupta, V., S. Roy, and L. R. Dharani. "Multi-Scale Modelling of Long-Term Mechanical Behaviour in Polymer Composite Laminates with Woven Fibre Architecture." Polymers and Polymer Composites 9, no. 5 (2001): 297–317. http://dx.doi.org/10.1177/096739110100900501.

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A comprehensive analytical model for predicting the long-term durability of polymers and polymer matrix composites should in general take into account polymer viscoelastic/viscoplastic creep, hygrothermal effects, and the effects of physical and chemical ageing on material response. These effects, in turn are influenced by a multitude of factors such as polymer morphology, service temperature, ambient relative humidity, internal moisture concentrations, stacking sequence, fibre volume fraction, fibre architecture, applied stress level, degree of damage and ageing time. The primary objective of
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Dissertations / Theses on the topic "Schapery modeling"

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Patankar, Kshitish A. "Linear and Nonlinear Viscoelastic Characterization of Proton Exchange Membranes and Stress Modeling for Fuel Cell Applications." Diss., Virginia Tech, 2009. http://hdl.handle.net/10919/28385.

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In this dissertation, the effect of temperature and humidity on the viscoelastic and fracture properties of proton exchange membranes (PEM) used in fuel cell applications was studied. Understanding and accurately modeling the linear and nonlinear viscoelastic constitutive properties of a PEM are important for making hygrothermal stress predictions in the cyclic temperature and humidity environment of operating fuel cells. In this study, Nafion® NRE 211, Gore-Select® 57, and Ion Power® N111-IP were characterized under various humidity and temperature conditions. These membranes were subjecte
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Rudolph, Nadine Verfasser], Rolf [Gutachter] [Findeisen, and Fred [Gutachter] Schaper. "Set-based multi-scale modeling and analysis signal transduction pathways / Nadine Rudolph ; Gutachter: Rolf Findeisen, Fred Schaper." Magdeburg : Universitätsbibliothek Otto-von-Guericke-Universität, 2019. http://d-nb.info/1220036382/34.

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Rudolph, Nadine [Verfasser], Rolf [Gutachter] Findeisen, and Fred [Gutachter] Schaper. "Set-based multi-scale modeling and analysis signal transduction pathways / Nadine Rudolph ; Gutachter: Rolf Findeisen, Fred Schaper." Magdeburg : Universitätsbibliothek Otto-von-Guericke-Universität, 2019. http://d-nb.info/1220036382/34.

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Conference papers on the topic "Schapery modeling"

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Nguyen, Ba Nghiep, Vlastimil Kunc, and Satish K. Bapanapalli. "Creep Modeling for Injection-Molded Long-Fiber Thermoplastics." In ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-66335.

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This paper proposes a model to predict the creep response of injection-molded long-fiber thermoplastics (LFTs). The model accounts for elastic fibers embedded in a thermoplastic resin that exhibits the nonlinear viscoelastic behavior described by the Schapery’s model. It also accounts for fiber length and orientation distributions in the composite formed by the injection-molding process. Fiber length and orientation distributions were measured and used in the analysis that applies the Eshelby’s equivalent inclusion method, the Mori-Tanaka assumption (termed the Eshelby-Mori-Tanaka approach) an
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