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Journal articles on the topic 'Equivalent Material Model'

Author: Grafiati

Published: 15 March 2025

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1

Jeon, Chi-Ho, Jae-Bin Lee, Sokanya Lon, and Chang-Su Shim. "Equivalent material model of corroded prestressing steel strand." Journal of Materials Research and Technology 8, no. 2 (2019): 2450–60. http://dx.doi.org/10.1016/j.jmrt.2019.02.010.

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2

Alamayrekh, Yekaterina Yu. "Model of the decryption and model of the abbreviation formal diversity in the abbreviation group “auto-”." Current Issues in Philology and Pedagogical Linguistics, no. 2(2020) (June 25, 2020): 91–102. http://dx.doi.org/10.29025/2079-6021-2020-2-91-102.

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The article deals with the principles of the analyses of the formal structure of the equivalence in the families of the equivalence of the compound abbreviations by the example of the abbreviation group “auto”. The relevance of the research is determined by the fact that on the basis of the synchronic equivalent approach to the description of the compound abbreviations a new interpretation of the characteristics of the formal equivalence of the word and correlated word-combination is described systematically. The results of this study provide a means of predicting the equivalence relations for

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3

CAI, Lailiang, Kan WU, Qisheng YU, and Jinpeng FENG. "A New Method of Equivalent Material Model Deformation Observation." International Journal of Modern Education and Computer Science 3, no. 5 (2011): 40–46. http://dx.doi.org/10.5815/ijmecs.2011.05.06.

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4

Guo, Hongwei, Chuang Shi, Meng Li, Zongquan Deng, and Rongqiang Liu. "Design and Dynamic Equivalent Modeling of Double-Layer Hoop Deployable Antenna." International Journal of Aerospace Engineering 2018 (2018): 1–15. http://dx.doi.org/10.1155/2018/2941981.

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This study proposes deployable units driven by elastic hinges and a double-layer hoop deployable antenna composed of these units. A rational modeling method based on the energy equivalence principle is presented to develop an equivalent model of the double-layer hoop antenna in accordance with the structural characteristics of the antenna. The equivalent beam models of the rods with elastic hinges are proposed. The relationship of geometrical and material parameters is established considering the strain energy and the kinetic energy of the periodic unit, which are the same as those of the equi

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Gyimóthy, Szabolcs. "Modeling stationary moving medium by static magneto-electric material." European Physical Journal Applied Physics 85, no. 1 (2019): 10901. http://dx.doi.org/10.1051/epjap/2018180161.

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The electromagnetic equivalence of a stationary moving medium to magneto-electric materials is studied. The equivalent material characteristics of the medium at rest is obtained in terms of the diffusion tensor coefficient of the governing partial differential equation. Special attention is paid to the transition condition of field quantities on the boundary of the moving medium; it is found that the nonmoving magneto-electric equivalent model must be supplied with surface sources. The method is demonstrated through examples and verified by finite element simulation.

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6

Fan, Pengxian, Haozhe Xing, Linjian Ma, et al. "Bulk Density Adjustment of Resin-Based Equivalent Material for Geomechanical Model Test." Advances in Materials Science and Engineering 2015 (2015): 1–8. http://dx.doi.org/10.1155/2015/363869.

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An equivalent material is of significance to the simulation of prototype rock in geomechanical model test. Researchers attempt to ensure that the bulk density of equivalent material is equal to that of prototype rock. In this work, barite sand was used to increase the bulk density of a resin-based equivalent material. The variation law of the bulk density was revealed in the simulation of a prototype rock of a different bulk density. Over 300 specimens were made for uniaxial compression test. Test results indicated that the substitution of quartz sand by barite sand had no apparent influence o

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7

Zanelli, L., A. Montanaro, E. L. Carniel, P. G. Pavan, and A. N. Natali. "The study of equivalent material parameters in a hyperelastic model." International Journal of Non-Linear Mechanics 89 (March 2017): 142–50. http://dx.doi.org/10.1016/j.ijnonlinmec.2016.12.014.

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8

Garala, Thejesh Kumar, Ge Cui, Naman Kantesaria, Charles M. Heron, Alec M. Marshall, and Lukáš Žižka. "Characterisation of spoil materials to develop an equivalent spoil material for physical model tests." Górnictwo Odkrywkowe LXIII, no. 4 (2022): 23–29. http://dx.doi.org/10.5604/01.3001.0053.8055.

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The engineering behaviour of spoil (overburden) needs to be explored either to understand the stability of reservoir slopes under various geological and climatic conditions or for the effective utilisation of reclaimed mines for sustainable infrastructure (e.g., onshore wind turbines). The spoil material is usually considered as highly heterogeneous, and samples collected from the same site can exhibit widely varying characteristics. In this study, spoil material from a mine site in the Czech Republic is characterised using in-situ field tests and laboratory tests. Cone penetration tests were

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9

Won Kim, Jae, Jae Ung Cho, Chan Ki Cho, and Jin Oh Kim. "A study on damage to mechanical seat cushion made from different materials of extension frame." International Journal of Engineering & Technology 7, no. 3.3 (2018): 315. http://dx.doi.org/10.14419/ijet.v7i2.33.14176.

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Background/Objectives: : Automotive seat is a very important component to prevent accidents by reducing passenger’s tiredness, thus, this study worked on analyzing damage with different materials of extension frames of mechanical seat cushions.Methods/Statistical analysis: In this study, we performed an experiment on cushion extension frames by splitting it into two parts. We studied about the damage prediction of slave body for each material property of ABS, PP, PLA, and PA6.6. For analyzing the condition, we assigned the side part of the master body for fixed support, and we progressed on an

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10

Xian, Xiang Ping, Yan Shuai Wang, Feng Xing, and Bi Qin Dong. "Measuring and Modeling Analysis of Electrochemical Impedance Spectroscopy for Hydration Procedure of Cement Materials." Advanced Materials Research 588-589 (November 2012): 1033–36. http://dx.doi.org/10.4028/www.scientific.net/amr.588-589.1033.

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In this paper, the electrochemical impedance spectroscopy method is applied to characteristic the hydration procedure in cement materials. And a new equivalent circuit model is developed to express the hydration procedure of cement material. As cement paste is a complicated electrochemical system with multi-phase transmission, the equivalent circuit model is considered with the additional double layer capacitance effect at the interface among the hydration products in cement materials. It can express the electrochemical station in cement material, as the multi-phase mass transmission in the ce

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11

Zhang, Zeyu, Zhiyong Jiao, Hongbing Xia, and Yuhan Yao. "Parameter Equivalent Method of Stator Anisotropic Material Based on Modal Analysis." Energies 12, no. 22 (2019): 4257. http://dx.doi.org/10.3390/en12224257.

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Accurate calculation of the vibration mode and natural frequency of a motor stator is the basis for reducing motor noise and vibration. However, the stator core and winding material parameters are difficult to determine, posing issues which result in modal calculation bias. To address the problem of calibrating the stator material parameters, we developed a parameter correction method based on modal frequency. First, the stator system was simplified to build a stator system finite element model. Secondly, the relationship between modal frequency and material parameters was analyzed by finite e

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12

Basov, V. V. "The Study of Geomechanical Condition of Unstable Rocks in the Vicinity of Mine Working Junctions." Mining science and technology 4, no. 1 (2019): 23–30. http://dx.doi.org/10.17073/2500-0632-2019-1-23-30.

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The relevance of research of material strain nature based on physical models equivalent to rocks is substantiated. To identify the dependencies and mechanism of unstable rock strain in the vicinity of mine working junctions, an experimental technique has been developed and presented. The method of physical modeling using equivalent materials was applied in the research. Strength characteristics of the rock equivalent material were calculated using the formulas proposed by G.N. Kuznetsov. The equivalent material was prepared based on two components, sand and paraffin. The mix formulation was se

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13

Han, Renxiu, Guoxi Li, Jingzhong Gong, Meng Zhang, and Kai Zhang. "Equivalent Method of Joint Interface Based on Persson Contact Theory: Virtual Material Method." Materials 12, no. 19 (2019): 3150. http://dx.doi.org/10.3390/ma12193150.

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An accurate equivalent method of metal joint interface is of great significance to optimize the dynamic performance of the whole machine. Therefore, it is necessary to establish an accurate equivalent method of joint interface. The virtual material method is a precise equivalent method of joint interface. The traditional virtual material method is based on the M–B fractal contact theory. By modeling the contact mechanics of the joint interface, the physical properties of the virtual material are obtained separately, such as elastic modulus, Poisson’s ratio and density. In this paper, Persson c

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14

Zilin, Yao, Wang Yu, Yang Xuefeng, Gao Anping, Zhang Rong, and Jia Yanjie. "Investigations of Mechanical Properties of API P110 Steel Casing Tubes Operated in Deep-Sea Sour Condensate Well Conditions." Polish Maritime Research 27, no. 3 (2020): 121–29. http://dx.doi.org/10.2478/pomr-2020-0053.

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AbstractDue to the complexity of the marine environment, in deep-sea drilling, all kinds of strings are corroded by different deep-sea conditions for a long time, accompanied by high temperature and high pressure, which lead to the continuous change of mechanical properties of materials. In order to solve the problem that the material mechanical parameters cannot be accurately described in the performance analysis of the casing, deep-sea simulated corrosion and material damage experiments of P110 material were carried out in this paper. Mass loss and tensile experiments on corrosion-damaged te

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15

Çınar, Okan, Merve Erdal, and Altan Kayran. "Accurate equivalent models of sandwich laminates with honeycomb core and composite face sheets via optimization involving modal behavior." Journal of Sandwich Structures & Materials 19, no. 2 (2016): 139–66. http://dx.doi.org/10.1177/1099636215613934.

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An approach is introduced for determining accurate two-dimensional equivalent laminated models of sandwich laminates with honeycomb core and composite facesheets by optimization involving modal behavior. The approach relies on minimizing the objective function which is defined as the sum of the square of the differences between the natural frequencies of the honeycomb sandwich laminate estimated by the finite element analysis of the 3D detailed model with the actual honeycomb core geometry and by the 2D equivalent laminated model with the honeycomb core replaced by the equivalent 2D orthotropi

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16

Yan, Zhi Xin, Jian Duan, Ping Jiang, and Hou Yu Wang. "A Study on Constitutive Model and Parameters of Rock Slope Stability." Materials Science Forum 575-578 (April 2008): 1210–16. http://dx.doi.org/10.4028/www.scientific.net/msf.575-578.1210.

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In this paper, taking elastic and plastic characteristics of rock into account, the authors have studied the relationship between different constitutive models. By transforming material parameters merely, on the basis of Equivalent Mohr-Coulomb Yield Criterion, the researchers achieved the application of these relationship in the computer program-Ansys5.7. They also have discussed the magnitude relationship between the transformed parameters and the original ones. By analyzing the cases of rock slope with obvious sliding surface, the researchers proved that it is liable to replace Mohr-Coulomb

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17

Bin, Li, Liu Jianhui, and Wang Xiuli. "A new multiaxial fatigue life prediction model considering additional hardening effect." Advances in Mechanical Engineering 12, no. 6 (2020): 168781402093533. http://dx.doi.org/10.1177/1687814020935331.

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The established linear fatigue life prediction model based on the Miner rule has been widely applied to fatigue life prediction under constant amplitude uniaxial and multiaxial loading. Considering the physical significance of crack formation and propagation, a multiaxial equivalent linear fatigue life prediction model is put forward based on Miner rule and critical plane method under constant amplitude loading. The essence of this approach is that the equivalent strain, which consists of the shear strain and normal strain on the critical plane, replaces the relevant parameter of uniaxial nonl

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18

Yang, Ming Bo, Jin Bao Chen, Fei Deng, and Meng Chen. "Analysis of Buffering Properties of Honeycomb Material." Advanced Materials Research 482-484 (February 2012): 1146–49. http://dx.doi.org/10.4028/www.scientific.net/amr.482-484.1146.

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The buffering properties of honeycomb material are analyzed in the presented work. Theoretical analysis based on energy method is first presented, the buffering process of honeycomb material can be divided into three phases, honeycomb material can be equivalent to orthotropic material and the equivalent material properties are given. Being good at soil mechanics, Abaqus can simulate lunar soil very well. Using a constitutive model for honeycomb material, which is a built-in user material model, the presented work developed a honeycomb material simulation model and verified with a practical exa

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19

Mohapatra, Kasinath Das, Susanta Kumar Sahoo, and Munmun Bhaumik. "Thermal Modeling and Structural Analysis in Wire EDM Process for a 3D Model." Applied Mechanics and Materials 852 (September 2016): 279–89. http://dx.doi.org/10.4028/www.scientific.net/amm.852.279.

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Wire EDM is one of the most non conventional machining processes used for cutting of different types of complex materials. Copper material in wire EDM has a wide application in several industries but its thermal and structural analysis in wire EDM has challenged the authors to model the work-piece and tools accurately using the software. The present work deals with the design of a 3 dimensional model of a work-piece material made of copper. The objective of the present work is to analyse the temperature, total heat flux and equivalent stress of the work-piece material using finite element anal

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20

Zhang, Yiyang, Lei Duan, Genlin Wang, Ming Zhang, and Zhiwei Luo. "A Prediction of Permittivity of Dielectric Elastomer using an Equivalent Capacitance Model and its Effect in Material Designing and Manufacturing." Journal of the Institute of Industrial Applications Engineers 5, no. 2 (2017): 100–103. http://dx.doi.org/10.12792/jiiae.5.100.

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21

SONG, SEUNG-HO, TAE-WAN KU, JEONG KIM, BEOM-SOO KANG, and WOO-JIN SONG. "INVESTIGATION ON THE EQUIVALENT MATERIAL PROPERTY OF CARBON REINFORCED ALUMINUM LAMINATES." International Journal of Modern Physics B 22, no. 31n32 (2008): 6149–54. http://dx.doi.org/10.1142/s0217979208051716.

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Fiber metal laminates as one of new hybrid materials with the bonded structure of thin metal sheets and fiber/epoxy layers have been developed for the last three decades. These kinds of materials can provide the characteristics of the excellent fatigue, impact and damage tolerance with a relatively low density. Because metal sheets and fiber/epoxy layers are bonded each other, the bonding between two materials is critical. In this study, the bonding strength is investigated experimentally with respect to surface roughness of metal sheets. The equivalent material properties of carbon reinforced

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22

Gao, Junjie, Haitao Han, Daiying Deng, and Jijun Yu. "Mathematical Model for Analyzing Heat Transfer Characteristics of Ablative Thermal Insulating Material." International Journal of Aerospace Engineering 2020 (July 8, 2020): 1–19. http://dx.doi.org/10.1155/2020/8817902.

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A mathematical model based on minimal thermal resistance and equal law of specific equivalent thermal conductivity is developed to discuss the heat transfer characteristics of ablative thermal insulating material from the mesoscopic scale. Based on the statistical results of mesoscopic parameters, the microstructure unit cell model was established to analyze the influence rule of mesoscopic parameterization which includes the size, distribution, and positional relation of microsphere and fiber. The results show that the equivalent thermal conductivity decreases with the density, size, distribu

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23

Shi, Kun, Guangpeng Zhang, Junping Shi, and Qiang Gao. "Equivalent characteristic model of a rough contact interface based on virtual material method." Advances in Mechanical Engineering 14, no. 9 (2022): 168781322211250. http://dx.doi.org/10.1177/16878132221125073.

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The characteristic of rough contact interface has a major influence on overall performance of machines. To facilitate the setting of contact interface characteristics during the performance analysis of the whole machine, an equivalent characteristic model of a rough contact interface based on virtual material method is established. The normal and tangential properties of the rough contact interface per unit area are first experimentally conducted. Furthermore, according to the Greenwood-Williamson (GW) model and stress wave propagation conditions of discrete elements, the relationship between

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24

Roy Mahapatra, D. "Equivalent constitutive model-based design of wave-absorbing material system and controller." Journal of Sound and Vibration 289, no. 3 (2006): 509–28. http://dx.doi.org/10.1016/j.jsv.2005.02.011.

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25

Gao, Feng, Wen Miao Li, and Ya Jun Hou. "Investigation for Mechanical Properties of Porous Materials Based on Homogenization Theory." Advanced Materials Research 1048 (October 2014): 414–17. http://dx.doi.org/10.4028/www.scientific.net/amr.1048.414.

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This paper investigated the macro-mechanical properties of three dimension porous materials consisted of periodically arrayed base units with random pore distribution using homogenization theory. The model of base unit using random numbers was established. A finite element method of homogenization equations was derived for the three dimension periodic structures and was applied to the calculation of the equivalent elastic modulus of porous materials with various porosities.The results shows the equivalent elastic modulus of three dimension porous material has significantly negative correlation

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26

Wu, Jun, Ruishan Yuan, Zhenwu He, Di Zhang, and Yonghui Xie. "Experimental Study on Dry Friction Damping Characteristics of the Steam Turbine Blade Material with Nonconforming Contacts." Advances in Materials Science and Engineering 2015 (2015): 1–15. http://dx.doi.org/10.1155/2015/849253.

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An experiment system has been established to study the dry friction damping dynamic characteristics of the steam turbine blade material 1Cr13. The friction dynamic characteristics of the specimens with nonconforming contact surfaces are measured under different parameters. The experiment results are compared with that of the macroslip hysteresis model and the Mindlin microslip friction model in detail. The results show that the experimental result of the tangential contact stiffness is in good agreement with that of the theory result based on the fractal theory and the Hertz contact theory by

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27

Nazarenko, Lidiia, Henryk Stolarski, and Holm Altenbach. "Modeling Cylindrical Inhomogeneity of Finite Length with Steigmann–Ogden Interface." Technologies 8, no. 4 (2020): 78. http://dx.doi.org/10.3390/technologies8040078.

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A mathematical model employing the concept of energy-equivalent inhomogeneity is applied to analyze short cylindrical fiber composites with interfaces described by the Steigmann–Ogden material surface model. Real inhomogeneity consists of a cylindrical fiber of finite length, and its surface possessing different properties is replaced by a homogeneous, energy-equivalent cylinder. The properties of the energy-equivalent fiber, incorporating properties of the original fiber and its interface, are determined on the basis of Hill’s energy equivalence principle. Closed-form expressions for componen

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28

Aleksandrov, Samuil R., Timo T. Overboom, and Elena A. Lomonova. "2D Hybrid Steady-State Magnetic Field Model for Linear Induction Motors." Mathematical and Computational Applications 24, no. 3 (2019): 74. http://dx.doi.org/10.3390/mca24030074.

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This paper presents a 2D hybrid steady-state magnetic field model, capable of accurately modeling the electromagnetic behavior in a linear induction motor, including primary slotting, finite yoke length, and longitudinal end-effects by primary motion. This model integrates a complex harmonic modeling technique with a discretized magnetic equivalent circuit model. The Fourier model is applied to regions with homogeneous material properties, e.g., air regions and the track of the motor, while the magnetic equivalent circuit (MEC) approach is used for the regions containing non-homogeneous materi

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29

Alwattar, Tahseen A., and Ahsan Mian. "Developing an Equivalent Solid Material Model for BCC Lattice Cell Structures Involving Vertical and Horizontal Struts." Journal of Composites Science 4, no. 2 (2020): 74. http://dx.doi.org/10.3390/jcs4020074.

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In this study, a body-centered cubic (BCC) lattice unit cell occupied inside a frame structure to create a so-called “InsideBCC” is considered. The equivalent quasi-isotropic properties required to describe the material behavior of the InsideBCC unit cell are equivalent Young’s modulus ( E e ) , equivalent shear modulus ( G e ) , and equivalent Poisson’s ratio ( ν e ) . The finite element analysis (FEA) based computational approach is used to simulate and calculate the mechanical responses of InsideBCC unit cell, which are the mechanical responses of the equivalent solid. Two separates finite

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30

Pisareva, T. A., N. S. Shadrin, E. V. Kharanzhevskiy, and S. M. Reshetnikov. "Model of supercapacitor electrodes based on nanostructured materials." Physics and Chemistry of Materials Treatment, no. 3 (2020): 74–83. http://dx.doi.org/10.30791/0015-3214-2020-3-74-83.

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The substantiation of an extended model of the equivalent electric circuit of supercapacitor electrodes based on nanostructured materials taking into account the change in the characteristics of charge transport in the electrolyte–electrode material system at various frequencies depending on the thickness of the electrode material has been presented. The model is aimed at predicting the impedance characteristics of supercapacitors depending on the conductivity of the electrolyte, the characteristics of the pores, and the thickness of the nanostructured material of the electrode. Good agreement

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31

Han, Renxiu, Guoxi Li, Jingzhong Gong, Meng Zhang, and Kai Zhang. "Experimental Verification and Comparative Analysis of Equivalent Methods on Metal’s Fixed Joint Interface." Materials 12, no. 15 (2019): 2381. http://dx.doi.org/10.3390/ma12152381.

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In order to effectively improve the dynamic characteristics of the fixed metal joint interface, it is important to establish a correct equivalent model of the metal joint interface. In this paper, three equivalent methods for simulating the metal joint interface are analyzed, including the virtual material method, spring damping method, finite element method, and verification by modal experiment. First, according to the contact mechanics model of the constructed metal joint interface, the physical properties of the three-dimensional models of the fixed joint interface are assigned in the ANSYS

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32

Wei, Y., C. L. Chow, H. E. Fang, and M. K. Neilsen. "Characteristics of Creep Damage for 60 Sn-40 Pb Solder Material." Journal of Electronic Packaging 123, no. 3 (1999): 278–83. http://dx.doi.org/10.1115/1.1372319.

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This paper presents a viscoplasticity model taking into account the effects of change in grain or phase size and damage on the characterization of creep damage in 60 Sn-40 Pb solder. Based on the theory of damage mechanics, a two-scalar damage model is developed for isotropic materials by introducing the free energy equivalence principle. The damage evolution equations are derived in terms of the damage energy release rates. In addition, a failure criterion is developed based on the postulation that a material element is said to have ruptured when the equivalent damage accumulated in the eleme

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33

Liu, Hui, Zhongliang Yang, and Lianchun Long. "Mechanical Properties of Stretching-Bending Synergistic Lattice Materials." Journal of Physics: Conference Series 2535, no. 1 (2023): 012019. http://dx.doi.org/10.1088/1742-6596/2535/1/012019.

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Abstract Lattice materials are widely used in engineering structures as their potential for multifunctional applications. In this study, a body-centered cubic (BCC) stretching-bending synergistic lattice material is constructed based on the face-centered cubic with vertical struts (FCCZ) stretching configuration that has both stretching and bending deformation mechanisms. Finite element models and equivalent models are established to investigate the mechanical properties of the stretching-bending synergistic lattice material. The effect of the relative density of the frame unit cell is studied

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34

Kokulu, Nil, Seden Acun Özgünler, Fethiye Ecem Edis, and Saniye Karaman Öztaş. "An LCIA-based model proposal for the selection of building interior finishing materials." Heritage and Sustainable Development 6, no. 1 (2024): 379–94. http://dx.doi.org/10.37868/hsd.v6i1.425.

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The increasing environmental impacts of buildings highlight conscious material selection as a pivotal aspect of sustainable building design. Most current life cycle impact assessment (LCIA) models on material selection focus on the main construction or insulation materials while often neglecting the environmental effects of finishing materials. Hence, this study seeks to present an LCIA-based model for selecting finishing materials based on their environmental impacts. Environmental Product Declaration (EPD) as a data source for the mandatory steps of LCIA is recommended for the model since it

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35

Fossum, A. F. "Rate Data and Material Model Parameter Estimation." Journal of Engineering Materials and Technology 120, no. 1 (1998): 7–12. http://dx.doi.org/10.1115/1.2806842.

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Traditionally stress-strain data are used to estimate material parameters in viscoplastic material models. Since the models exist in rate form, they must be integrated in time for the duration of the laboratory tests to give response models for parameter estimation. In this paper the alternative is considered in which the rate form of the material models is fitted to time differentiated stress strain data. Material parameteres, their 95 percent confidence intervals, and their correlation coefficients are compared with their counterparts determined from the more traditional stress versus strain

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Liu, Xi Liang, Hong Yu Liu, and Xian Jun Han. "The Theory and Stability Studies on Composite Bolted Rock Mass." Applied Mechanics and Materials 90-93 (September 2011): 2131–37. http://dx.doi.org/10.4028/www.scientific.net/amm.90-93.2131.

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Firstly, This paper applied the basic principle of composite material mechanics, saw the rock mass, anchor, mortar as a kind of composite material, established micromechanics equivalent model of bolted rock mass, deduced corresponding parameters formula of bolted rock mass equivalent mechanical model. Secondly, we analyzed engineering example by using the finite element software, conducted a numerical simulation research on composite model and discrete roadway model based on the theoretical derivation. Finally, we verified the feasibility and applicability of the equivalent method by comparati

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37

Kisel', Yuriy, Alexey Ulyanov, and Viktor Kamynin. "IMPROVING THE METHODS FOR CALCULATING ELASTIC CHARACTERISTICS OF FIBRE COMPOSITES." Automation and modeling in design and management, no. 1 (March 17, 2022): 15–23. http://dx.doi.org/10.30987/2658-6436-2022-1-15-23.

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Applying solid-state modelling methods for calculating the elastic properties and stress-strain state of fibre-reinforced composite materials is shown. A model of a composite material including a base and fibres is developed. The elastic properties and equivalent stresses in a fibrous composite material with different fibre content are determined.

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38

Haryanto, Ismoyo, Reni Reni, and Achmad Widodo. "Pengembangan Equivalent Plate Model Guna Analisis Dinamis Struktur Wing-Box dengan Material Komposit." ROTASI 19, no. 4 (2017): 243. http://dx.doi.org/10.14710/rotasi.19.4.243-251.

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Pada penelitian ini analisis getaran bebas dilakukan pada struktur wing-box yang dibuat menggunakan material komposit. Analisis yang didasrkan pada Equivalent-plate model dengan first-order shear deformation theory berdasarkan Reissner-Mindlin dilakukan untuk mendapatkan frekuensi pribadi dan modus getar dari struktur sayap pesawat udara tersebut. Pada studi ini wing-box yang ditinjau dimodelkan terdiri dari laminat yang tidak simetris. Persamaan gerak diturunkan dari Persamaan Lagrange untuk getaran bebas. Validasi dilakukan pada hasil analisa terhadap data yang diperoleh pada literatur. Hasi

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Yu, Jiaao, Shirui Peng, Hao Nan, and Jianhao Liu. "Equivalent circuit model of an ultra-wideband frequency selective surface composite absorbing material." Journal of Engineering 2019, no. 19 (2019): 5922–26. http://dx.doi.org/10.1049/joe.2019.0220.

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Wajnert, Dawid, and Bronislaw Tomczuk. "Nonlinear magnetic equivalent circuit of the hybrid magnetic bearing." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 38, no. 4 (2019): 1190–203. http://dx.doi.org/10.1108/compel-10-2018-0423.

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Purpose The purpose of this paper is to create a reliable nonlinear magnetic equivalent circuit (NMEC) of the hybrid magnetic bearing (HMB). Commonly used magnetic equivalent circuits of HMB omit a saturation effect of the magnetic material as well as the leakage and fringing flux. It results in imprecise modelling of the magnetic field distribution. On the other hand, only 3D finite element analysis (FEA) can be used to precisely simulate the magnetic field in this type of the magnetic bearing. The proposed NMEC incorporates the saturation effect of the magnetic material, as well as the leaka

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Jiang, Dong, Minrui Wang, Yuhang Sun, and Xiaochen Hang. "Equivalent Modeling of Bolted Connections under Transverse Load Using Iwan-Based Material Properties." Metals 13, no. 1 (2023): 91. http://dx.doi.org/10.3390/met13010091.

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The nonlinear characteristics of bolted connections are of significant importance for analyzing the mechanical performance of structures. The Iwan model is well-known and has been widely applied; its limitation is that it is not convenient for complex structures with multiple bolted connections. To simplify the modeling process, a material with the force-displacement characteristics of the Iwan model is proposed and applied to the bolted connection region, which can convert the nonlinearity of the bolted connection into the nonlinearity of the material. The constitutive relation of the propose

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Sun, Xiaoting, Yi Wang, Jinli Che, and Wei Wang. "Theoretical study on cushioning isolation of cushioning materials under high impact environment." Journal of Physics: Conference Series 2891, no. 4 (2024): 042006. https://doi.org/10.1088/1742-6596/2891/4/042006.

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Abstract When a guided projectile is fired, the high pressure generated by the gunpowder gas in the chamber produces a high impact accelerationtion of tens of thousands of g in the projectile, which makes the components of the projectile withstand a huge instantaneous, high-energy, strong impact load. This type of load environment results in the deformation and failure of the internal mechanical components and damage to all type of electronic components, leading to the failure of the entire guidance system. Selecting the correct cushioning material to store or dissipate the impact energy so th

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Zhou, Zhen Yu, and Qi Wen Xue. "Research on Homogenization of Composite Materials." Advanced Materials Research 663 (February 2013): 426–30. http://dx.doi.org/10.4028/www.scientific.net/amr.663.426.

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A numerical model is given to identify equivalent parameters of composite materials, using BP neural network algorithm. Taking Filament-wound composite pressure vessels as the research object, finite element models are first constructed .Getting node displacements as network training samples, the mechanical parameters as output information of network for effective training, the equivalent material parameters can be obtained. The satisfactory numerical validation is given and results show that the proposed method can identify the equivalent modulus and the equivalent Poisson’s ratio of the Fila

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Wang, Lian Bao, Xiao Qiu Hu, and Wei Fu Chen. "Dynamic Parameters Equivalent Modeling of Bearings Joint Surfaces Based on the Virtual Material." Applied Mechanics and Materials 433-435 (October 2013): 35–39. http://dx.doi.org/10.4028/www.scientific.net/amm.433-435.35.

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As commonly supporting parts of the spindle and the feed systems on the high-end grade CNC machine tool, dynamic characteristic of angular contact ball bearings had been a research hot spot in the current. Aiming at solving the problem that obtained the dynamic stiffness and damping of angular contact ball bearings, the factors of joint surfaces dynamic characteristic were equivalently viewed as a kind of virtual material in the paper, and an equivalent model of dynamic parameters for bearings joint surfaces was proposed based on the virtual material; an experimental device was developed to te

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Kojic´, M., N. Grujovic´, R. Slavkovic´, and M. Zˇivkovic´. "A General Orthotropic von Mises Plasticity Material Model With Mixed Hardening: Model Definition and Implicit Stress Integration Procedure." Journal of Applied Mechanics 63, no. 2 (1996): 376–82. http://dx.doi.org/10.1115/1.2788875.

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A general orthotropic von Mises plasticity model, with an extension of the Hill’s yield criterion to include mixed hardening, is introduced in the paper. Material constants and equivalent stress-equivalent plastic strain curves are defined in a way to suggest their experimental determination. The model represents a special case of a general anisotropic metal plasticity model proposed by the authors. An implicit stress integration procedure, representing an application of the governing parameter method (GPM) introduced by the first author, is presented. The GPM is briefly described, and the com

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Kara, Okan, and Hasan Hüseyin Çelik. "A Novel Nonlinear Magnetic Equivalent Circuit Model for Magnetic Flux Leakage System." Applied Sciences 14, no. 10 (2024): 4071. http://dx.doi.org/10.3390/app14104071.

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To ensure efficient inspection using the magnetic flux leakage (MFL) method, generating a flux density near the saturation level within the tested material is essential. This requirement brings high flux density conditions in the system’s pole regions. Hence, leakage flux within the slot is excessively triggered, leading to distortion of the defect signal. In this context, the system dimensions stand out as one of the most significant factors affecting the mentioned flux distributions. Therefore, various alternative solutions with different system dimensions arise in the design process of the

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Li, Zhiheng, Shaoxiang Ma, Yongmao Wang, et al. "Research and Analysis of Equivalent Circuit Model for Core Snubber." Journal of Physics: Conference Series 2452, no. 1 (2023): 012031. http://dx.doi.org/10.1088/1742-6596/2452/1/012031.

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Abstract The ion source is the key to the NBI. It is very sensitive to overvoltage and overcurrent, and the breakdown frequently occurs between the acceleration grid. The core snubber is the most suitable surge suppression device to achieve DC fault protection. This paper introduces some basic concepts, comparing the core snubber’s material properties and important parameters. It also introduces the basic concept of an equivalent circuit model for snubber, including the derivation process and theoretical analysis. Then the characteristics of the snubber and surge suppression analysis are intro

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Kamm, Jochen, Michael Becken, and Rafael Abreu. "Electromagnetic modelling with topography on regular grids with equivalent materials." Geophysical Journal International 220, no. 3 (2019): 2021–38. http://dx.doi.org/10.1093/gji/ggz563.

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SUMMARY Maxwell’s equations are valid regardless of the choice of the coordinate system. By this property a change of coordinates can be equivalently expressed as a change of the material parameters. This idea opens a new approach to the problem of accurate electromagnetic modelling in the vicinity of steep topography or bathymetry. Via a change of coordinates, any earth model with complicated layer interfaces can be represented by an equivalent model where those interfaces are flat, but with its materials correspondingly altered. This new model could then be discretized on a regular mesh and

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Das, S., and S. Chakraborty. "Damage Detection of FRP Composite Plates from Dynamical Responses using Finite Element Model Updating: Equivalent Material Properties as Parameters." Proceedings of the 12th Structural Engineering Convention, SEC 2022: Themes 1-2 1, no. 1 (2022): 1013–17. http://dx.doi.org/10.38208/acp.v1.614.

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Fibre reinforced plastic (FRP) composite structures are extensively used in weight sensitive applications, such as in aircrafts, ships, etc. Such structures are susceptible to damages during their usual operation or during extreme loading from environment. Due to the anisotropic nature of FRP composite plates, damage detection is difficult for such layered materials particularly when the damage site is inaccessible. The localised loss of stiffness resulting from damage is reflected into the global dynamic responses of such structures. Finite element model updating is a convenient inverse appro

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Xia, Huanxiong, Junfeng Meng, Jianhua Liu, Xiaohui Ao, Shengxiang Lin, and Ye Yang. "Evaluation of the Equivalent Mechanical Properties of Lattice Structures Based on the Finite Element Method." Materials 15, no. 9 (2022): 2993. http://dx.doi.org/10.3390/ma15092993.

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Lattice structures have excellent mechanical properties and can be designed by changing the cellular structure. However, the computing scale is extremely large to directly analyze a large-size structure containing a huge number of lattice cells. Evaluating the equivalent mechanical properties instead of the complex geometry of such lattice cells is a feasible way to deal with this problem. This paper aims to propose a series of formulas, including critical structural and material parameters, to fast evaluate the equivalent mechanical properties of lattice structures. A reduced-order model base

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