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Journal articles on the topic 'Stress-strain diagram'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Vilotic, Dragisa, Sergei Alexandrov, Aljosa Ivanisevic, and Mladomir Milutinovic. "Reducibility of Stress-Based Workability Diagram to Strain-Based Workability Diagram." International Journal of Applied Mechanics 08, no. 02 (2016): 1650022. http://dx.doi.org/10.1142/s1758825116500228.

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The strain-based and stress-based workability diagrams are often used to predict the initiation of ductile fracture in metal forming. The strain-based workability diagram is restricted to free surface fracture and postulates that the initiation of fracture is independent of the strain path. It is shown in the present paper that under these conditions the strain-based workability diagram is identical to the stress-based workability diagram. Using an available stress-based workability diagram the strain-based workability diagram is found in a much larger domain in the space of two in-surface pri

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2

Milošević, Nenad Zoran, Aleksandar Stojan Sedmak, Gordana Miodrag Bakić, et al. "Determination of the Actual Stress–Strain Diagram for Undermatching Welded Joint Using DIC and FEM." Materials 14, no. 16 (2021): 4691. http://dx.doi.org/10.3390/ma14164691.

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This paper presents new methodology for determining the actual stress–strain diagram based on analytical equations, in combination with numerical and experimental data. The first step was to use the 3D digital image correlation (DIC) to estimate true stress–strain diagram by replacing common analytical expression for contraction with measured values. Next step was to estimate the stress concentration by using a new methodology, based on recently introduced analytical expressions and numerical verification by the finite element method (FEM), to obtain actual stress–strain diagrams, as named in

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3

Balod, Anas O. "Theoretical Determination of Forming Limit Stress Diagram for Steel 1021 Sheet." Tikrit Journal of Engineering Sciences 17, no. 4 (2010): 56–66. http://dx.doi.org/10.25130/tjes.17.4.06.

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Forming limit stress diagram represent the maximum acceptable limits of principal stresses in sheet metal forming. This diagram show the limits of major and minor true stresses for different strain paths (uniaxial tension, plane strain and equibiaxial stretching path) in sheet metal forming. It is confirmed that the Forming limit stress diagram and the Forming Limit Strain Diagram are two mathematically equivalent representations of forming limits in stress space and strain space respectively. The Forming limit stress diagram of the sheet metal is gained by the transformation relations between

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4

Likhachev, Aleksey V., and Marina V. Tabanyukhova. "A new method for searching rectilinear section in an experimental stress–strain diagram." Vestnik Tomskogo gosudarstvennogo universiteta. Matematika i mekhanika, no. 91 (2024): 85–98. http://dx.doi.org/10.17223/19988621/91/8.

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Polyethylene terephthalate glycol (PETG) is characterized by a double refraction effect which is used when modeling the stress states of building structures. This paper aims to study the mechanical properties of PETG due to the need for practical approval of the modeling results. Experiments show that, for most plastics, the initial region of the stress–strain diagram significantly deviates from a straight line. However, an extended interval can be distinguished in this region, where the diagram is well approximated by a linear function. If the deviations of the diagram from the straight line

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5

Fatmaoui, H., R. Mesrar, and J. Chaoufi. "Intrinsic diagram of sheet metal forming limits for arbitrary strain paths." Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications 222, no. 4 (2008): 223–29. http://dx.doi.org/10.1243/14644207jmda188.

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Localized necking in sheets under biaxial tension is analysed by an Marciniak—Kuczynski localization approach (MK-analysis) along with a new plane-stress criterion. Analysis is developed for a rigid viscoplastic behaviour based on flow-theory of plasticity. The model is introduced in numerical calculations to determine forming limits to ductility under linear and non-linear strain paths. However, the results are presented in a new diagram that represent the effective strain as a function of the current strain-rate ratio. A comparison with classical forming limit diagrams shows the intrinsic ch

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6

LAZOUSKI, D., D. GLUKHOV, A. KHATKEVICH, and A. KALTUNOU. "APPROXIMATIONS OF CONCRETE DEFORMATION DIAGRAMS IN THE NONLINEAR CALCULATION OF NON-CENTRALLY COMPRESSED TUBULAR CONCRETE ELEMENTS." Herald of Polotsk State University. Series F. Civil engineering. Applied sciences, no. 1 (April 15, 2025): 2–12. https://doi.org/10.52928/2070-1683-2025-40-1-2-12.

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The possibility of using some approximations of concrete deformation diagrams to calculate non-centrally compressed tubular concrete elements is considered. The results of nonlinear calculation of stress-strain state parameters are compared with experimental data from the formed sample of studies. Approximation of the concrete deformation diagram with a horizontal section following the peak point makes it possible to obtain stress-strain state parameters that are more consistent with experimental data.

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7

Morokuma, Yuki, Shinichi Nishida, Yuichiro Kamakoshi, Koshi Kanbe, Tatsuya Kobayashi, and Ikuo Shohji. "Plastic Deformation Simulation of Sintered Ferrous Material in Cold-Forging Process." Materials Science Forum 941 (December 2018): 552–57. http://dx.doi.org/10.4028/www.scientific.net/msf.941.552.

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A cold forging process of Mo-alloyed sintered steel was simulated by finite element method (FEM) analysis considering density change in the process. Moreover, the effect of sintering time on the behavior of the densification and the plastic deformation of it in the cold-forging process was also investigated. Using the true stress-true strain diagram obtained by the compression test with a sintered specimen, the modified true stress-true strain diagram was derived for large plastic deformation analysis with the porous material model. The result of FEM analysis for the cold compression process o

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8

Nesvetaev, G. V., Y. I. Koryanova, Elena Ivanchuk, and A. Gortsevskoy. "The Influence of the E-Modulus of Coarse Aggregate on the Stress-Strain Diagram of the Concrete with Frame Structure." Materials Science Forum 974 (December 2019): 299–304. http://dx.doi.org/10.4028/www.scientific.net/msf.974.299.

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The stress-strain diagrams of concrete with frame structure made with content of coarse aggregate from 0.56 till 0.64 m3/m3, with crushed granite (E-modulus = 71 GPa) and crushed silica sandstone (E-modulus = 42 GPa) are shown. It is shown that the stress-strain diagram of the concrete with frame structure made with coarse aggregate with E-modulus 42 GPa is almost linear over the entire loading range. Stress-strain diagram of concrete made with coarse aggregate with E-modulus 71 GPa has three zones. It is concluded that the concentration of intrastructural stresses under loading in the concret

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9

Matyunin, V. M., A. Yu Marchenkov, P. V. Volkov, et al. "Conversion of the kinetic indentation diagrams of ball indenter into stress-strain curves for metallic structural materials." Industrial laboratory. Diagnostics of materials 88, no. 2 (2022): 54–63. http://dx.doi.org/10.26896/1028-6861-2022-88-2-54-63.

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A brief review of known approaches to converting diagrams obtained by indentation into tension diagrams is presented. It is noted that most studies on the transformation of kinetic diagrams of indentation of a spherical indenter into tension diagrams are carried out within the limits of uniform deformation using both computational and experimental approaches including the finite element method (FEM) and neural networks. However, we consider that such a transformation from one diagram to another can be fulfilled successfully when using the proper relationship between indentation and tension def

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10

Huang, Baofeng, Yixian Xu, and Guojun Zhang. "Experimental Investigation on Uniaxial Compressive Strength of Thin Building Sandstone." Buildings 12, no. 11 (2022): 1945. http://dx.doi.org/10.3390/buildings12111945.

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Thin sandstone is a widely used building material; however, its compressive behavior is not well understood. Four groups of cylinders were manufactured in a factory to investigate the uniaxial compressive behavior of red sandstone. Uniaxial compression tests were performed to determine the compressive behavior and failure mode of the specimens. The geometry of the stress–strain diagram varied among the four groups. The critical strain generally increased with a decrease in the height of the cylinder, whereas the compressive strength exhibited an inverse trend. The experimental diagrams were no

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11

Lytvyniak, Oksana. "DEFORMATION ANALYSIS OF LAYERED REINFORCED CONCRETE - FOAM CONCRETE FLOOR SLABS." Acta Polytechnica 60, no. 4 (2020): 324–37. http://dx.doi.org/10.14311/ap.2020.60.0324.

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This article presents a theoretical study of a stress-strain state of layered reinforced concrete - foam concrete floor slabs (hereinafter called as the LRFCS), with the use of a deformation analysis. Compressive and tensile diagrams of the foam concrete, a tensile diagram of the reinforced concrete and compressive and tensile diagrams of the reinforcement rod are used for the estimation of the stress-strain state of the calculated cross-section of the LRFCS. It should be noted that this article presents the deformation method of loading by the scheme of pure bending for the LRFCS. This deform

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12

Holan, Jakub, and Radek Štefan. "Regarding the Interaction Diagram of Reinforced Concrete Cross-Section." Solid State Phenomena 292 (June 2019): 164–72. http://dx.doi.org/10.4028/www.scientific.net/ssp.292.164.

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The paper deals with the problems and ambiguities that were solved while developing a computer program capable of constructing accurate interaction diagrams. These problems are not satisfactorily described in available literature. Within the paper, amongst other things, the issue of strain of concrete at the ultimate load capacity of a cross-section is also discussed. The developed computer program is available for free and it is possible to use it for the calculation and construction of an interaction diagram of a doubly reinforced rectangular cross-section. More specifically, it provides a s

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13

Wang, Y., X. Ren, K. Otsuka, and A. Saxena. "Temperature–stress phase diagram of strain glass Ti48.5Ni51.5." Acta Materialia 56, no. 12 (2008): 2885–96. http://dx.doi.org/10.1016/j.actamat.2008.02.032.

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14

Fomin, Stanislav, Yuriy Izbash, Serhii Butenko, Maryna Iakymenko, and Karina Spirande. "Calculation of composite elements of slabs in buildings, structures and fragments of spans of bridges." MATEC Web of Conferences 230 (2018): 02007. http://dx.doi.org/10.1051/matecconf/201823002007.

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The calculation consists of two stages. The first one begins with the definition of their class, bearing capacity at temperature of 20 °C, according to EN 1992-1-1. At the second stage, the calculation at high temperatures shall be carried out in accordance with Eurocode 4 part 1-2. Comparison of the “stress-strain” diagram of concrete of class 30 under compression and temperature of 20 °C in two formulas showed their difference. That is, the designers do not have the opportunity to continue the calculation of diagrams at different heating temperatures. There was a need to improve the mathemat

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15

Subotin, Viktor H., Oleksandr S. Burakov, Oleksii V. Dushyn, Viktor M. Iefymenko, Oleksii O. Korshunov, and Oleg M. Khoryev. "Analysis of Stress-Strain State and Contact Pressures on Surfaces of Kaplan Runner Blade Bearing Bronze Bushes." Journal of Mechanical Engineering 24, no. 3 (2021): 45–51. http://dx.doi.org/10.15407/pmach2021.03.045.

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An analysis of the existing and prospective blade seal designs for Kaplan runners was performed. The selected design type provides the maximum ecological safety for Kaplan runners. A 3D model of runner hub sector with the trunnion, inner and outer bushes of blade trunnion was generated taking into account the cyclic symmetry of the runner design based on the modern automated design engineering system. A diagram of application of external loads from the blade and lever to the given 3D model of the Kaplan runner hub segment was developed. The contact problem was formulated to determine the stres

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16

Long, Koh Sin, Mudiono Kasmuri, Abu Sufian Zia Hasan, and Roszilah Hamid. "Dynamic Increase Factor of High Strength Concrete with Silica Fume at High Strain Rate Loading." Materials Science Forum 857 (May 2016): 299–304. http://dx.doi.org/10.4028/www.scientific.net/msf.857.299.

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The dynamic mechanical properties (stress-strain diagram, ultimate stress, ultimate strain and strain rate) and of high strength concrete (HSC) with 5% and 10% silica fume (SF) addition at high strain rate of 10 s-1 to 102 s-1 (3.8 MPa, 4.1 MPa and 4.8 MPa) are determined using Split Hopkinson Pressure Bar equipment. The compressive strength of the HSC at design strength of 80 and 90 MPa is also determined. Results show that the compressive strength of the 5%SF and 10%SF HSC are 83 MPa and 92 MPa, respectively. The dynamic stress-strain diagrams show that the higher the pressure load, the high

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17

Ress, D. W. A., and R. K. Power. "Orientation and formability of orthotropic sheet metals." Journal of Strain Analysis for Engineering Design 32, no. 1 (1997): 61–81. http://dx.doi.org/10.1243/0309324971513229.

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This paper examines the formability of automotive sheet metals: CR steels and 6000 series aluminium-magnesium alloys. Necking strains are used to determine the forming limits; i.e. a diffuse instability condition is reached under in-plane biaxial stressing. The theory admits material anisotropy, work-hardening and sheet orientation under any ratio of applied principal stresses. It has been programmed to accept orientations between the principal stress axes and the sheets' rolling direction in 15° increments between 0° and 90°. The ratio between the principal stresses may vary between 0 and ± 1

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18

Prasad, K. Sajun, Sushanta Kumar Panda, Sujoy Kumar Kar, S. V. S. Narayana Murty, and S. C. Sharma. "Effect of Bending Strain in Forming Limit Strain and Stress of IN-718 Sheet Metal." Materials Science Forum 830-831 (September 2015): 238–41. http://dx.doi.org/10.4028/www.scientific.net/msf.830-831.238.

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The forming limit diagram (ε-FLD) was estimated by deforming IN-718 sheet metal in different strain paths using a sub-size limiting dome height test set-up. The bending strains induced due to the use of smaller punch were estimated in all the strain paths, and the corrected ε-FLD was evaluated. The mathematical models such as Hill localized necking, Swift diffuse necking and Storen-Rice bifurcation theories were implemented to predict the limiting strains. In-order to avoid the path dependency of the ε-FLD during multi-stage forming process, stress based forming limit diagram (σ-FLD) was estim

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19

Lechniak, Juliusz, and Krzysztof Kamiński. "Generating Interaction Curve Graph Based on the Rotation Angle of Strain Diagram, According to EN 1992." Applied Mechanics and Materials 797 (November 2015): 61–68. http://dx.doi.org/10.4028/www.scientific.net/amm.797.61.

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The most comfortable way to present capacity is M-N interaction curve diagram (bending moment and longitudinal force). Graph of M-N most commonly appears as a function, where an axial force is the argument and the bending moment is the value. This work introduce a formation of the curve way, where the the rotation angle of the strain diagram is the argument, and the full strain diagram is the value. Using the complete state of the strain of the cross section, enables easy calculation the M-N forces using stress-strain diagram for a given material. Interaction graph is based on parabola-rectang

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20

Oliveira, Victor Hugo Dalosto de, Rodolfo Alves Carvalho, Luana Ferreira Borges, et al. "Comparison between concrete stress diagrams according to the Brazilian standard ABNT NBR 6118: 2014." Acta Polytechnica CTU Proceedings 33 (March 3, 2022): 424–30. http://dx.doi.org/10.14311/app.2022.33.0424.

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This study aims to compare methods for the determination of concrete properties by means of the stress diagrams present in the Brazilian standard ABNT NBR 6118: 2014. The area under the stress diagram, the internal reactions, and the application point of the resulting reactions for the parabola-rectangle and rectangular block diagrams are present in order to compare them. Deductions and numerical examples were used, and different results were obtained for each formulation. This is due to non-consideration of the relationship between stress and strain in the simplified rectangular block. The re

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21

Bloom, J. M. "Deformation Plasticity Failure Assessment Diagram (DPFAD) for Materials With Non-Ramberg-Osgood Stress-Strain Curves." Journal of Pressure Vessel Technology 117, no. 4 (1995): 346–56. http://dx.doi.org/10.1115/1.2842134.

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This paper presents a brief history of the evolution of the Central Electricity Generating Board’s (CEGB) R-6 failure assessment diagram (FAD) procedure used in assessing defects in structural components. The reader is taken from the original CEGB R-6 FAD strip yield model to the deformation plastic failure assessment diagram (DPFAD), which is dependent on Ramberg-Osgood (R-O) materials to general stress-strain curves. An extension of the DPFAD approach is given which allows the use of material stress-strain data which do not follow the R-O equation such as stainless steel or carbon manganese

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22

Sun, Deqiang, Yujin Sun, Jincui Ben, Feng Ge, Guozhi Li, and Sihan Jiao. "Energy absorption characteristics of circular-celled honeycombs under in-plane quasi-static compressive loadings." International Journal of Materials Research 112, no. 7 (2021): 565–77. http://dx.doi.org/10.1515/ijmr-2020-7785.

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Abstract The energy absorption characteristics of hexagonally packaged circular-celled honeycombs and quadrilater-ally packaged circular-celled honeycombs are obtained under in-plane quasi-static compressive loadings through finite element analysis. The stress–strain curves, deformation modes, energy absorption efficiency, specific plateau stress, normalized energy absorption and energy absorption diagrams are discussed. The cell arrangement patterns influence the shapes of stress–strain curves and deformation modes. The densification strain is in linear relationship with the relative density

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23

Huang, Zhi Dong, Yun Pu Du, Bao Quan Liu, Guang Yang, Yu Feng Liu, and Xin Guang Zhao. "Finite Element Analysis of Key Component on Two Wheels Scooter." Applied Mechanics and Materials 597 (July 2014): 531–34. http://dx.doi.org/10.4028/www.scientific.net/amm.597.531.

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Based on Solidworks software, the three-dimensional model of two wheels scooter is set up. The finite element model of two wheels scooter is generated. Finite element analysis of driving system on two wheels scooter is investigated. The stress and strain of driving system is investigated. The stress diagram and the strain diagram are obtained. The method and the result can be used as a reference of innovative design of two wheels scooter.

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Romashko-Maistruk, Olena, and Vasyl Romashko. "Basic Characteristics of the Deformation Diagrams of Compressed Concrete under the Action of Dynamic Loads." Materials Science Forum 1140 (December 19, 2024): 47–55. https://doi.org/10.4028/p-jg19he.

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This article is devoted to the modeling of the stress-strain diagram of compressed concrete under the action of dynamic loads of various intensities. The main attention is paid to the influence of the strain rate of concrete on the determining parameters of this diagram. The degree of dependence of the dynamic increase factor (DIF) and the level of critical deformability of compressed concrete both on the rate of its deformation and on the level of elastic-plasticity (class) has been established. The analytical relationship between the main static and dynamic characteristics of the deformation

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Movrin, Dejan, Mladomir Milutinovic, Marko Vilotic, Sergei Alexandrov, and Lihui Lang. "A Method for Determining the Workability Diagram by Varying Friction Conditions in the Upsetting of a Cylinder between Flat Dies." Crystals 11, no. 11 (2021): 1411. http://dx.doi.org/10.3390/cryst11111411.

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This paper aims to develop a method for determining the workability diagram by varying frictional conditions in the cylinder upsetting test. The method is based on a known theoretical relationship between the average stress triaxiality ratio and in-surface strains if the initiation of fracture occurs at a traction-free surface. This relationship is valid for any rigid/plastic strain hardening material obeying the Mises-type yield criterion and its associated flow rule, which shows the wide applicability of the method. The experimental input to the method is the strain path at the site of fract

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26

Kolesnikov, Gennadiy. "Analysis of Concrete Failure on the Descending Branch of the Load-Displacement Curve." Crystals 10, no. 10 (2020): 921. http://dx.doi.org/10.3390/cryst10100921.

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In this paper, load-displacement and stress-strain diagrams are considered for the uniaxial compression of concrete and under three-point bending. It is known that the destruction of such materials occurs on the descending branch of the load-displacement diagram. The attention of the presented research is focused on the explanation of this phenomenon. Fracture mechanics approaches are used as a research tool. The method for determining effective stresses and modulus of elasticity of concrete based on the results of uniaxial compression tests has been substantiated. The ratios necessary for the

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Huang, Zhi Dong, Yun Pu Du, Liang Zhao, Ke Gang Zhu, Hong Ji, and Ren Sheng Wang. "Finite Element Analysis of Two Wheels Scooter Based on Solidworks." Applied Mechanics and Materials 620 (August 2014): 24–27. http://dx.doi.org/10.4028/www.scientific.net/amm.620.24.

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Based on Solidworks software, the three-dimensional model of two wheels scooter is set up. The finite element model of two wheels scooter is generated. Finite element analysis of telescopic mechanism of bar on two wheels scooter is investigated. The stress and strain of telescopic mechanism of bar is investigated. The stress diagram and the strain diagram are obtained. The method and the result can be used as a reference of innovative design of two wheels scooter.

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Marks, L., H. Lu, T. Chambers, S. Finkenstaedt-Quinn, and R. S. Goldman. "Writing-to-learn in introductory materials science and engineering." MRS Communications 12, no. 1 (2022): 1–11. http://dx.doi.org/10.1557/s43579-021-00114-z.

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AbstractWe examine the impact of writing-to-learn (WTL) on promoting conceptual understanding of introductory materials science and engineering, including crystal structures, stress–strain behavior, phase diagrams, and corrosion. We use an analysis of writing products in comparison with pre/post concept-inventory-style assessments. For all topics, statistically significant improvements between draft and revision scores are apparent. For the stress–strain and phase diagram WTL assignments that require synthesis of qualitative data into quantitative formats, while emphasizing microstructure-prop

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Pratibha, Gupta* M.D. Choudary. "STUDY OF MODULUS OF ELASTICITY PROPERTIES IN TERMS TENSION AND COMPRESSION MODE BY REINFORCEMENT OF CALCIUM CARBONATE IN DIFFERENT RATIO IN HIGH DENSITY POLYETHYLENE." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 5, no. 6 (2016): 378–82. https://doi.org/10.5281/zenodo.55514.

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Modulus of Elasticity - is a measure of stiffness of an elastic material. It is used to describe the elastic properties of objects like wires, rods or columns when they are stretched or compressed.   Rate of change of strain as a function of stress. The slope of the straight line portion of a stress strain diagram. Tangent modulus of elasticity is the slope of the stress-strain diagram at any point.   In present experiment Particular size of calcium carbonate is reinforced in high density polyethylene (HDPE) in different weight ratio .The objective of present experiment to study the

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Mars, W. V. "Computed Dependence of Rubber'S Fatigue Behavior on Strain Crystallization." Rubber Chemistry and Technology 82, no. 1 (2009): 51–61. http://dx.doi.org/10.5254/1.3557006.

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Abstract This work explores the consequences of strain crystallization on rubber's fatigue crack nucleation behavior over an extensive space of operating conditions, including tension and compression loading states, and relaxing and non-relaxing cycles. The study considers, via computation, how the nonlinear elastic stress-strain behavior, the fatigue crack growth characteristics, and the damage accumulation law combine to produce the Haigh diagram and the Cadwell diagram. Four hypothetical materials are studied, which differ in their crystallization and associated fatigue crack growth behavio

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Wildemann, V. E., A. I. Mugatarov, and A. A. Khmelev. "COMPUTATIONAL-EXPERIMENTAL METHOD FOR STRESS-STRAIN CURVE CONSTRUCTING UNDER CONDITIONS OF INHOMOGENEOUS STRESS FIELDS." PNRPU Mechanics Bulletin, no. 2 (December 15, 2024): 24–32. http://dx.doi.org/10.15593/perm.mech/2024.2.03.

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In order to ensure reliability of structures, it is necessary to study equilibrium damage accumulation which initiates softening zones in solids. It is considered appropriate to use postcritical deformation models when conducting strength analysis of structures. However, obtaining complete stress-strain curves in standard tests is difficult due to the strain localization in the form of a neck. At the same time, the use of true stresses taking into account changes in a specimen cross section is incorrect due to the implementation of a complex stress state. In this regard, it is necessary to dev

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Polovyi, A. O., N. V. Matiushevski, and N. G. Lisachenko. "Features of nonlinear in-plane shear deformation of a unidirectional and orthogonally reinforced polymer sheets of composite materials." Industrial laboratory. Diagnostics of materials 87, no. 5 (2021): 47–55. http://dx.doi.org/10.26896/1028-6861-2021-87-5-47-55.

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A comparative analysis of typical stress-strain diagrams obtained for in-plain shear of the 25 unidirectional and cross-ply reinforced polymer matrix composites under quasi-static loading was carried out. Three of them were tested in the framework of this study, and the experimental data on other materials were taken from the literature. The analysis of the generalized shear-strength curves showed that most of the tested materials exhibit the similar deformation pattern depending on their initial shear modulus: a linear section is observed at the beginning of loading, whereas further increase

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Mironov, Vladimir, and Olga Lukashuk. "Study of Strain-Softening Stage in Structurally Inhomogeneous Materials." MATEC Web of Conferences 253 (2019): 01003. http://dx.doi.org/10.1051/matecconf/201925301003.

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The paper considers – in terms of modeling and experimental testing – the softening stage manifested in structurally inhomogeneous materials under quasi-static and cyclic load. The method which is used to build the theoretical basis is typical for mechanics. It starts with defining a new material property – strain-softening phase. The stage is realized in the form of a descending branch of the curve on computer diagrams recorded during simple tension or torsion tests on non-reusable specimens in a reasonably rigid testing machine. The type of such a diagram is determined by the structural inho

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Wang, Ying Xin, Xiao Qin Zeng, Wen Jiang Ding, Alan A. Luo, and Anil K. Sachdev. "Development and Validation of Extrusion Limit Diagram for AZ31 and AM30 Magnesium Alloys." Materials Science Forum 546-549 (May 2007): 327–32. http://dx.doi.org/10.4028/www.scientific.net/msf.546-549.327.

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Uniaxial hot compression tests were performed at constant temperature (T) and strain rate (ε& ) in the ranges of 200-500 °C at an interval of 50 °C and 0.001-20 s-1. The flow stress data were used to develop the extrusion limit diagram for AZ31 and AM30 magnesium tubes. The extrusion limit diagram shows a wide region available for extruding AZ31 and AM30 seamless tubes, and comparison of the two extrusion limit diagrams shows that, the extrudability of AM30 alloy is better than that of AZ31 alloy. Actual extrusion trials validated the predicted temperature rise limit curve corresponding to

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Eryshev, Valeriy A. "The Concrete Diagrams Integral Parameters in the Calculations of Reinforced Concrete Elements by Limiting States." Materials Science Forum 974 (December 2019): 698–703. http://dx.doi.org/10.4028/www.scientific.net/msf.974.698.

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The paper proposes a method for calculating the reinforced concrete elements strength according to the deformation model using the deformation diagrams of concrete and reinforcing steel materials, which eliminates the complicated procedure of numerical integration of stresses in the element section during the transition to generalized internal forces. Integral parameters of diagrams are introduced into the energy model for calculating the strength of reinforced concrete elements along with the deformations and stresses normalized values at the base diagrams’ points. The integral parameters are

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Kyrytsya, I. Iu, O. V. Petrov, I. V. Vishtak, and S. I. Sukhorukov. "Determination of Limiting Deformations at Testing Cylindrical Samples for Tension." Problems of Tribology 29, no. 1/111 (2024): 6–15. http://dx.doi.org/10.31891/2079-1372-2024-111-1-6-15.

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This paper proposes a method for calculating limiting deformations under conditions of localized deformation during tensile testing. The method for calculating limiting deformations was used to construct plasticity diagrams under conditions of strain localization under uniaxial tension. The plasticity diagram is one of the material functions that forms the technological map of the material. The plasticity diagram displays the properties of a material depending on the degree of deformation and the stress state scheme. According to the studies carried out in this work, it was establi

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Moulin, G. "Caractérisation de l'état limite de l'argile de Pornic." Canadian Geotechnical Journal 26, no. 4 (1989): 705–17. http://dx.doi.org/10.1139/t89-081.

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This paper describes a natural clay, the Pornic clay, in accordance with the yield state and critical state concepts. The author has carried out a series of axisymmetrical triaxial tests on a natural overconsolidated clay and has clearly shown the yield state curve of the material; the curve is defined as the intersection of the yield state and "overconsolidated state" surfaces. The stress-strain paths are plotted either in the original p′-q-ε-v diagram or in the normalized diagram where the stresses are defined with respect to the preconsolidation pressure [Formula: see text], thus allowing o

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Sun, Bin, Chang Yu Zhou, and Xiao Hua He. "The Strain-Based Failure Assessment Diagram for Commercially Pure Titanium TA2." Applied Mechanics and Materials 750 (April 2015): 79–86. http://dx.doi.org/10.4028/www.scientific.net/amm.750.79.

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Strain-based failure assessment methods have been usually used in recent years to propose the fitness-for-service flaws. In this paper, the stress-based and strain-based failure assessment diagram (SB-FAD) approaches were reviewed firstly. Then, SB-FAD approach was used to the material commercially pure titanium TA2 with high strain-hardening coefficient. Several failure assessment curves obtained from strain-based method for four typical specimens, i.e., CCP (center-cracked plate), DECP (double edge cracked plate), SECP (single edge cracked plate) and CT (compact tension) were proposed. It wa

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Biks, Yuriy. "ANALYTICAL LOAD-BEARING CAPACITY’S DETERMINATION OF REINFORCED CONCRETE BEAMS BY DIFFERENT "STRESS-STRAIN" DEPENDENCIES." Modern technology, materials and design in construction 32, no. 1 (2022): 21–31. http://dx.doi.org/10.31649/2311-1429-2022-1-21-31.

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The article presents a comparative analysis of methods for determining the load-bearing capacity of reinforced concrete beams (second design task), based on the deformation approach according to current standards of calculation DBN B.2.6-98: 2009 "Concrete and reinforced concrete structures. Substantive provisions". The results of determining the maximum value of the bending moment in the Mu beam by five methods based on the use of a curvilinear diagram of "stress-strain" (nonlinear deformation model of Bambura A.M., new deformation model of Pavlikov A.M., deformation-force model Romashko V.M.

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Gregersen, H., O. H. Gilja, T. Hausken, et al. "Mechanical properties in the human gastric antrum using B-mode ultrasonography and antral distension." American Journal of Physiology-Gastrointestinal and Liver Physiology 283, no. 2 (2002): G368—G375. http://dx.doi.org/10.1152/ajpgi.00144.2001.

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The aims of this study were to investigate gastric antral geometry and stress-strain properties by using transabdominal ultrasound scanning during volume-controlled distensions in the human gastric antrum. Seven healthy volunteers underwent stepwise inflation of a bag located in the antrum with volumes up to 60 ml. The stretch ratio and Cauchy stress and strain were calculated from measurements of pressure, diameter, and wall thickness. A second distension series was conducted in three volunteers during administration of the anticholinergic drug butylscopolamine. Analysis of stretch ratios dem

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FONSECA, Y. F., and A. S. C. SILVA. "Comparison between resistant load contours generated considering the parabolic-rectangular (DPR) and the rectangular (DR) stress-strain diagrams for rectangular sections under combined axial compression and biaxial bending." Revista IBRACON de Estruturas e Materiais 11, no. 3 (2018): 455–73. http://dx.doi.org/10.1590/s1983-41952018000300002.

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Abstract The aim of this study is to compare the load contour diagrams generated for rectangular RC cross-sections under combined axial compression and biaxial bending obtained by the two forms of analysis allowed by NBR 6118:2014 [1]: the first using the parabolic-rectangular stress-strain diagram (DPR) and the second using the rectangular (constant stress) diagram (DR). In order to compare the load contours generated, a reference cross-section was adopted for which the concrete strength class (from C20 to C90) and the deformation domains (4, 4a and 5) were varied for the study. It was studie

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Wang, Jin Long. "Elastic-Plastic Analysis of the Reinforced Beam." Advanced Materials Research 163-167 (December 2010): 1111–14. http://dx.doi.org/10.4028/www.scientific.net/amr.163-167.1111.

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The finite element model of the reinforced beam was established. The results were obtained, such as the structural distortion diagram, the cleavage process diagram, the deflection contour map, the stress contour map to the X axle and the equivalent stress map. The result of the simulation shows that the established reinforced beam bring plastic strain and appear crack under the uniform pressure.

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Зернин, Михаил, and Mikhail Zernin. "Tests for equivalence of the stress state and the generalized stress-strain diagram babbitt Tin-based." Bulletin of Bryansk state technical university 2014, no. 3 (2014): 26–34. http://dx.doi.org/10.12737/23196.

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Describes the methodologies and results of experimental investigations on the basis of tin babbitt in different types of stress. Specification of parameters of the criterion of equivalence of states of stress and strain diagram obtained single babbitt.

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Ng, H. W., and C. Nadarajah. "Biaxial Ratcheting and Cyclic Plasticity for Bree-Type Loading—Part I: Finite Element Analysis." Journal of Pressure Vessel Technology 118, no. 2 (1996): 154–60. http://dx.doi.org/10.1115/1.2842174.

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The Bree diagram has been incorporated in the ASME B&PV Code in the elevated temperature Code Case N47 as a design approach for limiting strain accumulation in cylinders subjected to cyclic thermal loadings under sustained primary stress. Since the Bree diagram is based upon uniaxial-stress model, it is pertinent to examine the influence of biaxial stresses on strain growth and cyclic stress-strain hysteresis response. The results of inelastic analyses presented in this paper showed that ratcheting and hysteresis behavior may also occur in the axial direction in addition to the hoop direct

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Bazhenov, V. G., D. A. Kazakov, S. S. Kukanov, D. L. Osetrov, and A. A. Ryabov. "ANALYSIS OF METHODS FOR CONSTRUCTING TRUE DEFORMATION DIAGRAMS OF ELASTOPLASTIC MATERIALS UNDER LARGE DEFORMATIONS." PNRPU Mechanics Bulletin, no. 4 (December 15, 2023): 12–22. http://dx.doi.org/10.15593/perm.mech/2023.4.02.

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To study the deformation and strength properties of materials, it is important to use an experimental and computational approach that allows taking into account the ununiaxiality and heterogeneity of the stress-strain state without accepting simplifying hypotheses. True deformation diagrams are constructed using an iterative procedure of updating the strain intensity– stress intensity relation proportionally to the relative difference in the values of axial forces as obtained numerically and experimentally for an inhomogeneous stress-strain state, accounting for necking, up to rupture. The pro

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Eryshev, Vladimir, Nickolay Karpenko, and Artur Zhemchuyev. "INTEGRAL PARAMETERS OF CONCRETE DIAGRAMS FOR CALCULATIONS OF STRENGTH OF REINFORCED CONCRETE ELEMENTS USING THE DEFORMATION MODEL." International Journal for Computational Civil and Structural Engineering 16, no. 1 (2020): 25–37. http://dx.doi.org/10.22337/2587-9618-2020-16-1-25-37.

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In accordance with the requirements of regulatory documents, restrictions are introduced on stress levels at the end of the falling branch of the diagrams at the maximum normalized strain values. We have developed mathematical models that establish a uniform sequence for calculating the unambiguous values of deformations at the base points of concrete diagrams, taking into account the accepted functional relationships and the rules for their use according to the tables of normative documents. It was shown that for equal values of deformations and stresses at base points, analytical expressions

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Zhu, Zhe, Xue Jun Zheng, Dan Shu Zhang, and Ju Gao. "Threshold stress of 90° domain switching in the misfit strain–external stress phase diagram." Japanese Journal of Applied Physics 53, no. 12 (2014): 125501. http://dx.doi.org/10.7567/jjap.53.125501.

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Lyamina, E. A. "Through-thickness damage distribution in sheet bending employing the workability diagram." VESTNIK of Samara University. Aerospace and Mechanical Engineering 23, no. 4 (2024): 133–43. https://doi.org/10.18287/2541-7533-2024-23-4-133-143.

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A semi-analytical solution is constructed to determine the through-thickness distribution of the average stress triaxiality parameter included in the ductile fracture criterion in sheet bending under the action of a bending moment and tensile force. It is assumed that the condition of the sheet is plain-strain. The sheet material is elastic-plastic, and the uniaxial yield stress is an arbitrary function of the equivalent plastic strain. The solution allows for predicting the occurrence of plastic fracture and the distribution of the degree of use of the plasticity reserve over the sheet thickn

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M. Salman, Mohammed, Qais J. Frayyeh, and Luma A. Zghair. "STRESS –STRAIN DIAGRAM OF SELF-CONSOLIDATING CONCRETE SUBJECTED TO CHEMICAL ATTACK." Journal of Engineering and Sustainable Development 26, no. 5 (2022): 105–14. http://dx.doi.org/10.31272/jeasd.26.5.10.

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Self-consolidating concrete (SCC) is increasingly used in a number of concrete applications, some of which are highly susceptible to attack by sulfuric acid. This work aimed to study the resistance of a wide range of different SCCs to sulfuric attack. The main variables studied included binder material type (highly reactive materials), limestone powder, and hybrid fibers in this work, compaction, L-box, and V-hopper were performed for the new mixtures. In this study, the specimens were immersed in a solution of sulfuric acid at a concentration (0.5%) for up to 289 days after normal curing for

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Dutta, A., and A. Kumar. "Determination of biaxial stress–strain diagram for gas pressure superplastic forming." Materials Science and Technology 22, no. 5 (2006): 607–10. http://dx.doi.org/10.1179/174328406x84067.

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