Academic literature on the topic 'Thermo-stress-strain state'

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Journal articles on the topic "Thermo-stress-strain state"

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.Vignesh, K., and M. .Anbalagan. "Investigation of Mechanical Properties of Composite Materials Reinforced with Carbon Fibers." International Scientific Journal of Engineering and Management 04, no. 04 (2025): 1–9. https://doi.org/10.55041/isjem02832.

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Theoretical and experimental methods for obtaining and investigating effective thermo-mechanical characteristics - residual stresses and deformation in panels made of nanomodified materials with asymmetrical reinforcement scheme have been developed in this paper. The study of the residual stress-strain state of structural elements made of carbon plastic using the values of thermo elastic characteristics of composite mono layers identified on the basis of the developed methods made it possible to reveal the possibility of reducing the residual stress-strain state in structures with asymmetric r
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Lee, Hee Jong, Jung Han Song, and Hoon Huh. "Dynamic Tensile Tests of Auto-Body Steel Sheets with the Variation of Temperature." Solid State Phenomena 116-117 (October 2006): 259–62. http://dx.doi.org/10.4028/www.scientific.net/ssp.116-117.259.

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This paper is concerned with the thermo-mechanical behavior of steel sheet for an autobody including the temperature dependent strain-rate sensitivity. Tensile tests have been carried out with the high strength steel sheets such as SPRC35R, SPRC45E and TRIP60. The tensile tests were performed with the variation of the strain-rates from 0.001/s to 200/s and with the variation of environmental temperatures from -40 to 200. The thermo-mechanical response at the quasi-static state is obtained with the static tensile test and the one at the intermediate strain-rate is obtained with the high speed t
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Veljic, Darko, Marko Rakin, Bojan Medjo, Mihailo Mrdak, and Aleksandar Sedmak. "Temperature fields in linear stage of friction stir welding: Effect of different material properties." Thermal Science 23, no. 6 Part B (2019): 3985–92. http://dx.doi.org/10.2298/tsci181015264v.

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Friction stir welding is one of the procedures for joining the parts in solid state. Thermo-mechanical simulation of the friction stir welding of high-strength aluminium alloys 2024 T3 and 2024 T351 is considered in this work. Numerical models corresponding to the linear welding stage are developed in Abaqus software package. The material behaviour is modelled by Johnson-Cook law (which relates the yield stress with temperature, strain and strain rate), and the Arbitrary Lagrangian-Eulerian technique is applied. The difference in thermo-mechanical behaviour between the two materials has been a
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Li, Xueyang, Christian C. Roth, Vincent Grolleau, and Dirk Mohr. "An Engineering Approximation on the Transformation of Plastic Work into Heat at Various Strain Rates and Stress States." MATEC Web of Conferences 408 (2025): 02017. https://doi.org/10.1051/matecconf/202540802017.

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Accurate estimation of plastic work conversion into heat is crucial for analyzing metals under dynamic deformation. This study investigates DP800 sheet metal specimens across nine strain rates (0.001/s to 150/s) using notched tension (NT) and shear (SH) specimens to explore stress-state effects. Surface strain fields are monitored via digital image correlation (DIC) using a high-speed optical camera, while temperature rise due to plastic dissipation is measured using a high-speed infrared camera. A temperature rise of 170K is observed at 150/s, with minimal rise at 0.001/s. A Hill′48 yield sur
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Boucly, Vincent, Daniel Ne´lias, Shuangbiao Liu, Q. Jane Wang, and Leon M. Keer. "Contact Analyses for Bodies With Frictional Heating and Plastic Behavior." Journal of Tribology 127, no. 2 (2005): 355–64. http://dx.doi.org/10.1115/1.1843851.

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The stress field within machine components is an important indicator for contact failures. Since both thermal stresses due to frictional heating and plasticity are significant in engineering application, it is critical to predict the total stress field. In this work, the steady-state thermal effect is considered and a thermo-elastic–plastic contact model is developed. The model is applicable for rolling and/or sliding contact problem, as far as small equivalent plastic strain hypothesis is respected. Influence coefficients for surface normal displacement, temperature, and strain and stress ten
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Marina, Vasile, and Viorica Marina. "DETERMINATION OF THERMOREOLOGICAL CHARACTERISTICS AT MICROSCOPIC SCALE FROM EXPERIENCES ON THIN WALL TUBES." Journal of Engineering Science XXV (2) (June 15, 2018): 30–37. https://doi.org/10.5281/zenodo.2559352.

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The relationships between the module of stress and strain tensor deviator, in the case of thermorheological processes, are modeled by using the structural model. It is shown that sub-element properties can be determined from some experiences on thin walls tubes loaded with axial forces and interior pressure. Because the constants and material functions for this material are unknown the loaded conditions with constant state parameters are required. If the stretching process is produced with a constant speed of axial strain for each material there is one constant report among axial and circumsta
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Senchenkov, I. K., M. V. Jurzhenko, O. P. Chervinko, and O. V. Dolia. "Numerical simulation of the thermo-stress-strain state of elements under 3D printing." Bulletin of Taras Shevchenko National University of Kyiv. Series: Physics and Mathematics, no. 4 (2021): 70–75. http://dx.doi.org/10.17721/1812-5409.2021/4.11.

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The paper is devoted to the assessment of the thermo-stress-strain state of elements of structures obtained by 3D printing using FDM (Fusing Deposition Modeling) technology. Three stages of solving this problem are considered: (1) - mathematical formulation of the problem, that includes universal balance relations, constitutive equations of mechanical behavior of the material and is based on the model of growing bodies; (2) the technique of finite-element solution with increasing mesh due to the addition of new elements; (3) - study of a specific problem of growing plate-like element by polyme
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Vaghefi, Reza, MR Hematiyan, and Ali Nayebi. "Three-dimensional thermo-mechanical analysis of continuous casting and comparison with two-dimensional models." Journal of Strain Analysis for Engineering Design 53, no. 6 (2018): 421–34. http://dx.doi.org/10.1177/0309324718780131.

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In this study, a three-dimensional thermo-elasto-plastic model is developed for simulating a continuous casting process. The obtained results are compared with those from different two-dimensional analyses, which are based on plane stress, plane strain, and generalized plane strain assumptions. All analyses are carried out using the meshless local Petrov–Galerkin method. The effective heat capacity method is employed to simulate the phase change process. The von Mises yield criterion and elastic–perfectly-plastic model are used to simulate the stress state during the casting process; while, ma
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An, Feng Hui, Yu Hui Sha, and Liang Zuo. "Flow Behavior of Fe-3%Si Steel at High Temperatures and Strain Rates." Materials Science Forum 704-705 (December 2011): 928–34. http://dx.doi.org/10.4028/www.scientific.net/msf.704-705.928.

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Hot deformation behavior of Fe-3%Si steel within temperature range of 1073~1473K and strain rate range of 0.01~5s−1was investigated by isothermal compression test using thermo-simulation method. Over the applied deformation conditions, steady state flow behavior was well described by the power law relationship with dislocation climb as the rate-controlling mechanism, and the high apparent activation energy can be attributed to the high yield stress. A modified Bergström model was proposed by introducing yield stress, and consequently the whole stress-strain curves can be accurately predicted.
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Kreyca, Johannes, and Ernst Kozeschnik. "Flow Stress Modelling and Microstructure Development during Deformation of Metallic Materials." Materials Science Forum 892 (March 2017): 44–49. http://dx.doi.org/10.4028/www.scientific.net/msf.892.44.

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A constant strain hardening rate is characteristic for large strain deformation at low temperatures and often observed during wire drawing. This stage of deformation, in the following referred to as stage IV, is determined by the microstructural evolution of dislocation cells. At elevated temperatures, rapid stress saturation is typically reached and no stage IV behavior is observed. This behavior is modelled in the present work, following the concept of state-parameter based plasticity, evolving dislocation density and subgrain formation as functions of strain rate, strain and temperature. It
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Book chapters on the topic "Thermo-stress-strain state"

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Kudaykulov, A. K., A. A. Tashev, K. B. Begalieva, M. T. Arshidinova, and A. Merkibayeva. "Numerical Study of the Influence of Ambient Temperature on the Thermo-stress-Strain State of a Rod with a Curvilinear Core." In Mechanisms and Machine Science. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-67569-0_11.

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Gatmiri B. "Nonlinear behavior of multiphase engineered/geological barriers in nuclear waste disposal." In Proceedings of the 16th International Conference on Soil Mechanics and Geotechnical Engineering. IOS Press, 2005. https://doi.org/10.3233/978-1-61499-656-9-2261.

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A new suction-based mathematical model for thermo-hydro-mechanical behavior of unsaturated media is presented by Gatmiri (1997) and Gatmiri et al (1999). In this approach, heat and moisture transfer equations are given in an alternative form based on water and air pressures. Temperature-dependent state surface formulations are given for void ratio and degree of saturation variations within porous media. The coupling effects of temperature and moisture content on deformation of skeleton, and the inverse effects are included in this model via thermal state surface concept. The non-linear constit
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Altpeter Iris, Tschuncky Ralf, Hällen Karl, et al. "Early detection of damage in thermo-cyclically loaded austenitic materials." In Studies in Applied Electromagnetics and Mechanics. IOS Press, 2012. https://doi.org/10.3233/978-1-60750-968-4-130.

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Early detection of damage in cyclically loaded austenitic steel was performed with electromagnetic acoustic transducer measurements in total strain controlled low cycle fatigue tests at ambient and elevated temperature. The application of physically based measurement data, e.g. time of flight from electromagnetically activated ultrasonic signals in austenitic fatigue specimens and total strain, enables measurements of a new hysteresis relationship. This hysteresis gives, in analogy to the stress-strain hysteresis, information about the actual state of fatigue of the austenitic steel and shows
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Conference papers on the topic "Thermo-stress-strain state"

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Pucha, Raghuram V., Gnyaneshwar Ramakrishna, and Suresh K. Sitaraman. "Mechanics Issues at Micro-Scale Modeling of Electronic Packages." In ASME 2001 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/imece2001/epp-24709.

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Abstract Due to the temperature dependent material properties and low cycle thermo-mechanical fatigue of electronic packaging interconnects and components, plasticity theories are extensively used to understand their mechanical response in estimating the fatigue life. Experimental evidence indicates that plastic deformation at small scales depends not only on the state variables of stress and strain, but also on their higher order gradients. In this paper mechanics issues related to strain gradient plasticity at micron scale are reviewed through strain gradient enhanced continuum theories. A p
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Hossain, Mohammad M., Puligandla Viswanadham, Dereje Agonafer, and Tommi Reinikainen. "Deformation Characteristics and Constitutive Relationship of SnAgCu Lead (Pb)-Free Solder Alloys Under Thermo-Mechanical and Mechanical Loading." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-13745.

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In this paper is reported the mechanical and thermomechanical aspect of SnAgCu solder alloys that have been tested for their deformation behavior. Commercially available Sn3.8Ag0.7Cu was considered as base alloy. The constant stress and strain-rate tests were performed in tensile and shear configuration. Mechanical deformations were measured using bulk solder tensile specimens and grooved lap shear specimens which enabled a stress-state of nearly pure shear in the solder joint. The strain rate range was between 0.1/sec and 10-6/sec, and test temperatures were 25°C, 75°C and 125°C. Both as-prep
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Zhang, Xueping, Rajiv Shivpuri, and Anil K. Srivastava. "Microstructure Sensitive Flow Stress Based on Self Consistent Method." In ASME 2016 11th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/msec2016-8708.

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Flow stress in the high speed machining of titanium alloys depends strongly on the microstructural state of the material which is defined by the composition of the material, its starting microstructure and the thermo-mechanical loads imposed during the machining process. Previous researchers have determined the flow stress empirically as a function of mechanical state parameters such as strain, strain rate and temperature while ignoring the changes in the microstructural state such as alpha-beta phase transformations. This paper presents a new microstructure sensitive flow stress model based o
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Sarala, R., B. Sutharson, and D. Jaya Kanth. "Thermal Elastic-Plastic Stress Analysis of Structural Elements With Creep." In ASME 2005 Pressure Vessels and Piping Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/pvp2005-71061.

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Finite element analysis of thermo-mechanical problems is reported here. From the literature, it may be seen that the thermal-elastic plastic analysis of structural elements has continued to remain a research topic for a couple of decades. No one computationally verified the thermal elastic plastic stress analysis with creep using triangular elements or quadrilateral elements. Finite element analysis code TSAP (Thermal Structural Analysis Programme) was developed in FORTRAN to handle the elastic-plastic stress analysis on two-dimensional planar or three dimensional axisymmetry structures subjec
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Boucly, V., D. Ne´lias, S. Liu, Q. J. Wang, and L. M. Keer. "Contact Analyses for Bodies With Frictional Heating and Plastic Behavior." In World Tribology Congress III. ASMEDC, 2005. http://dx.doi.org/10.1115/wtc2005-63156.

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The stress field within machine components is an important indicator for contact failures. Since both thermal stresses due to frictional heating and plasticity are significant in engineering application, it is critical to predict the total stress field. In this work, the steady- state thermal effect is considered and a thermo-elastic-plastic contact model is developed. The model is applicable for rolling and/or sliding contact problem, as far as small equivalent plastic strain hypothesis is respected. Influence coefficients for surface normal displacement, temperature, and strain and stress te
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Ogata, Takashi, and Masato Yamamoto. "Biaxial Thermo Mechanical Fatigue Life Propety of a Ni Base DS Super Alloy." In ASME Turbo Expo 2006: Power for Land, Sea, and Air. ASMEDC, 2006. http://dx.doi.org/10.1115/gt2006-90758.

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Development of life assessment methods of high temperature components in gas turbine for maintenance and operating cost reduction is strongly demanded by Japanese utilities. Especially, first row blades are subjected to complicated. Thermo-Mechanical-Fatigue (TMF) loading during start-steady state-stop cycles. Therefore it is important to clarify the TMF life property of blade materials to develop a life assessment procedure. In this study, tension-torsion biaxial TMF tests have been performed between 450C and 870C on a Ni base directional solidified (DS) supper alloy. Strain ratio, φ was defi
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KARANTZA, Konstantina D. "A computational study on the adiabatic shear banding development during plane-strain uniaxial and angled-biaxial dynamic compression of AISI 1045 steel." In Innovative Manufacturing Engineering and Energy. Materials Research Forum LLC, 2024. https://doi.org/10.21741/9781644903377-30.

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Abstract. This work studies the adiabatic shear banding (ASB) development during dynamic plane strain compression of AISI 1045 steel under uniaxial and biaxial loading. In the case of biaxial loading, the examined steel sample is of 5° inclination in order to provide a shear-compression stress state due to its angled loading state. The numerical analysis is conducted through structural-thermal-damage doubly coupled finite element models in LS-DYNA by implementing the thermo-viscoplastic Modified Johnson-Cook plasticity flow rule and damage law. The simulations revealed that angled compression
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Quinn, Simon, Shiang-Jiun Lin, Jonathan McCabe, and Robert E. Rowlands. "Determining Orthotropic Coefficients From, and Thermoelastic Stress Analysis of, Diametrally Loaded Composite Disk." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-14822.

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Thermoelastic stress analysis measures temperature variations in loaded solids and relates these to associated stresses. For orthotropic materials, the measured signal is proportional to a linear combination of the normal stress changes in the directions of material symmetry, and K1 and K2 are thermo-mechanical coefficients. Quantitative thermoelastic stress analysis of orthotropic composites necessitates (i) determination of the above two thermo-mechanical coefficients (i.e. calibration), and (ii) separation of the stresses. Although calibration procedures can take different forms, K1 and K2
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Solano, Rafael Familiar, Fa´bio Braga de Azevedo, Malcolm Carr, Leanne Tindall, Anderson Dolinski, and Carlos Eduardo Ingar Valer. "Thermo-Mechanical Design of Canapu PIP System." In ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2009. http://dx.doi.org/10.1115/omae2009-79713.

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This paper discusses the thermo-mechanical design of the pipe-in-pipe (PIP) flowline installed in the Canapu field, located in Espi´rito Santo State, offshore Brazil. The pipeline is approximately 20km in length and connects the gas producing well 4-ESS-138 positioned in a depth of 1608m to Cidade de Vito´ria FPSO, located in Golfinho field. The Canapu PIP will operate under high pressure and temperature (HP/HT) conditions and is laid on the seabed. Due to the operational conditions, the thermo-mechanical design evaluated the susceptibility of the pipeline to the phenomenon of lateral buckling
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Mann, Ben, Kurtis Ford, Mike Neilsen, and Dan Kammler. "Minimizing Residual Stress in Brazed Joints by Optimizing the Brazing Thermal Profile." In ASME 2020 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/imece2020-24618.

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Abstract Ceramic to metal brazing is a common bonding process used in many advanced systems such as automotive engines, aircraft engines, and electronics. In this study, we use optimization techniques and finite element analysis utilizing viscoplastic and thermo-elastic material models to find an optimum thermal profile for a Kovar® washer bonded to an alumina button that is typical of a tension pull test. Several active braze filler materials are included in this work. Cooling rates, annealing times, aging, and thermal profile shapes are related to specific material behaviors. Viscoplastic ma
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Reports on the topic "Thermo-stress-strain state"

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TENSILE BEHAVIOUR OF TMCP Q690D HIGH-STRENGTH STRUCTURAL STEEL AT STRAIN RATES FROM 0.00025 TO 760 S-1. The Hong Kong Institute of Steel Construction, 2022. http://dx.doi.org/10.18057/ijasc.2022.18.1.7.

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The application of Q690D high-strength structural steel (HSSS) has been increasing in engineering structures. The lack of knowledge of the strain rate behaviour limits the application to the extreme loading conditions such as blast and impact loadings. This paper presents a series of tensile tests on the dynamic tensile behaviour of Q690D HSSS produced through the thermo-mechanical control process (TMCP). The stress-strain relationships of TMCP Q690D in the strain rate range of 0.00025 to 760 s-1 were measured by using the universal and servo-hydraulic high speed testing machines. The experime
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