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Journal articles on the topic 'Plate with Central Hole'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Yang, Zheng. "The Interaction of Holes on Stress and Strain Concentrations in Uniaxially Loaded Tensile Plates." Applied Mechanics and Materials 268-270 (December 2012): 767–71. http://dx.doi.org/10.4028/www.scientific.net/amm.268-270.767.

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Abstract. The elastic stress and strain fields of plates containing one central hole and two auxiliary holes subjected to uniaxial tension are examined using finite element method. The interaction between holes and the thickness effect on stress and strain concentration factors are investigated. It is shown that the distributions of strain concentration factor and stress concentration factor are different near central hole and auxiliary hole, and both of them depend on the hole radii and the distance between central hole and auxiliary hole. There is a minimum value of Kε/Kσ in stress concentra

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2

Yang, Zheng. "The Coupled Effects of Thickness and Distance between Holes on Stress and Strain Concentrations of Uniaxially Loaded Tensile Plates." Applied Mechanics and Materials 268-270 (December 2012): 761–66. http://dx.doi.org/10.4028/www.scientific.net/amm.268-270.761.

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The elastic stress and strain fields of plates containing one central hole and two auxiliary holes subjected to uniaxial tension are examined using finite element method. The interaction between holes and the thickness effect on stress and strain concentration factors are investigated. It is shown that the distributions of strain concentration factor and stress concentration factor are different in the region of stress concentration and both of them depend on the hole radii and the distance between central hole and auxiliary hole. For the finite thickness plates, the distributions of stress an

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3

Huang, Kuo Yi, and Gwo Chung Tsai. "Impact Experiment and Analysis of the Carbon Fiber Composite Plate with the Central Hole." Advanced Materials Research 821-822 (September 2013): 158–61. http://dx.doi.org/10.4028/www.scientific.net/amr.821-822.158.

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The composite material plate with the central hole is made by the composite prepreg. During the laying, the circle Teflon sheet is installed into the center of the composite plate. After curing, the center circle area was cut-out and the composite plate with the central hole was observed. Three different central holes are designed by the diameter of 12 mm, 14 mm, and 16 mm. The composite plate with central hole is stroke by the impact-or to measure the absorption energy, and acceleration to compare their impact resistance. The finite element analysis is also used to analyze the mechanical beha

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4

Lim, Seongsik, Vivek Kumar Dhimole, Yongbae Kim, and Chongdu Cho. "Investigations for Design Estimation of an Anisotropic Polymer Matrix Composite Plate with a Central Circular Hole under Uniaxial Tension." Polymers 14, no. 10 (2022): 1977. http://dx.doi.org/10.3390/polym14101977.

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Composite plates with holes are common in engineering applications, such as the automotive and aerospace industries. Three-dimensional braided carbon/epoxy polymers are an advanced textile composite and are used in various structures due to their high damage resistance and relatively low manufacturing cost. When a braided polymer plate with a hole is used in engineering applications, it is necessary to know its mechanical behavior under loading conditions using analysis theory to design it better. However, the effects of stress distribution with shear deformation theories on the variable thick

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Scheperboer, Irene, Evangelos Efthymiou, and Johan Maljaars. "Deformation of Perforated Aluminium Plates under In-Plane Compressive Loading." Key Engineering Materials 710 (September 2016): 357–62. http://dx.doi.org/10.4028/www.scientific.net/kem.710.357.

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Aluminium plates containing a single hole or multiple holes in a row are recently becoming very popular among architects and consultant engineers in many constructional applications, due to their reduced weight, as well as facilitating ventilation and light penetration of the buildings. However, there are still uncertainties concerning their structural behaviour, preventing them from wider utilization. In the present paper, local buckling phenomenon of perforated aluminium plates has been studied using the finite element method. For the purposes of the research work, plates with simply support

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6

Ilyas, Asif M., Gerald M. Hayward, Jonathan A. Harris, Wenhai Wang, and Brandon S. Bucklen. "Bridge Plate Design Effects on Yield and Fatigue in Distal Radius Fracture Model." Journal of Wrist Surgery 9, no. 06 (2020): 475–80. http://dx.doi.org/10.1055/s-0040-1713419.

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Abstract Background Bridge plating for distal radius fractures is indicated for complex fractures with comminution, extensive articular involvement, and/or cases requiring immediate weight bearing. Bridge plate fixation of distal radius fractures is a well-documented treatment method; however, failures have been reported with repetitive loading through the bridged distal radius fracture. Plate design is implicated as a cause of plate fracture in select clinical studies but few mechanical tests comparing bridge plate designs have been reported. This study sought to determine the impact of plate

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7

Prajapati, Hiren, Prachi Patel, and M. Y. Patil. "Estimation of Stress Concentration Factor for a plate with hole under Axial Tension Loading." Jurnal Kejuruteraan 35, no. 2 (2023): 437–44. http://dx.doi.org/10.17576/jkukm-2023-35(2)-15.

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The purpose of this study is to investigate the effects of hole/holes on stress concentrations in a plate using a current industry standard software - Finite Element Analysis (FEA). Plate with hole/holes is a common engineering application such as in automobile, marine, aerospace and mechanical structures. Hole/Holes can be seen in many thin-walled mechanical and automobile structures and components. For example, hole/holes are found in residential/commercial buildings’ steel structural studs to allow plumbing installation, web or flange of steel box girders in bridges is furnished with holes

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8

Ihnatieva, Viktoriia, and Svitlana Danylchenko. "WAYS TO CREATE A SAFE ENVIRONMENT FOR TRAVELLING ON PUBLIC ROADS OF WITHIN SETTLEMENTS." Modern technology, materials and design in construction 37, no. 2 (2025): 26–29. https://doi.org/10.31649/2311-1429-2024-2-26-29.

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The ways of creating a safe environment for travelling on the roads of settlements are highlighted. The reasons that create a dangerous environment for travelling on the roads of settlements are considered. The expediency of improving the locking mechanism of manhole cover is highlighted. The literature sources devoted to the improvement of the lock mechanism of manhole cover manhole cover have been analysed. The main disadvantages of manhole covers are revealed. It is established that the existing designs of manhole covers cannot provide a safe environment for travelling on the roads of settl

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9

Abu-Farsakh, Ghazi A., Amin H. Almasri, and Dana H. Qa’dan. "Stress concentration around a central hole as affected by material nonlinearity in fibrous composite laminated plates subject to in-plane loading." Science and Engineering of Composite Materials 22, no. 1 (2015): 31–36. http://dx.doi.org/10.1515/secm-2013-0125.

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AbstractThe distribution of stresses in laminated composite plates with a central circular hole and having various stacking sequences, different geometric dimensions and subjected to in-plane axial tensile loading was investigated. The ANSYS computer program was utilized using the finite element method to study the linear and nonlinear material effects. A new method was proposed for the purpose of incorporating the material nonlinearity model into the ANSYS computer program using the secant modulus material model. The aim of the authors is to analyze the effect of D/b and a/b ratios (where D i

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10

Sivaramakrishnaiah, M., S. N. Pradeepkumar Reddy, P. Madhu Raghava, and B. V. Amaranathareddy. "Theoretical and simulation of central elliptical hole with rectangular plate." Journal of Emerging Science and Engineering 2, no. 1 (2024): e18. http://dx.doi.org/10.61435/jese.2024.e18.

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A study on design engineering components with slot, notches is very important, because there is a stress increases/failure region area, where the force/stress is concentrating more and more. The elastic stress concentration mainly depends on the mode of loading, materials, and geometry of the design engineering components. The design engineers, academicians, and researchers concentrated and focused on fail-safe design and safe life design. A Plate is considered with different slots, such as circular and elliptical. The main objective of this study is to find out the stress concentration factor

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11

Dong, Chen Song. "Effects of Stress Concentration on Fibre Reinforced Composites." Key Engineering Materials 664 (September 2015): 111–17. http://dx.doi.org/10.4028/www.scientific.net/kem.664.111.

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A study on the stress concentration of composite plates with a central circular hole subject to axial and bending loads is presented in this paper. The stress concentration of composite plates with a central circular hole subject to axial and bending loading was studied with the aid of finite element analysis. It is shown that geometry has a significant effect on stress concentration, while fibre volume fraction has little effect. The stress concentration factor decreases with increasing hole diameter to plate width ratio. Further analysis shows stress concentration is strongly dependent on an

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12

Rakte, Mr Akshay Ashokrao. "Research and Finite Element Analysis of Circular Braking Plate." International Journal for Research in Applied Science and Engineering Technology 13, no. 5 (2025): 7464–72. https://doi.org/10.22214/ijraset.2025.71924.

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Abstract: Noise and vibration associated with the deceleration process in passenger buses has come an important profitable and technological problem in the sedulity.The knowledge of natural frequency of factors is of great interest in the study of the response of structures to various excitations.Hence, a copse slice plate with a central hole, fixed at the inner edge and free at the external edge, is chosen, and its dynamic response is excavated.The ideal of the current discussion work is to anatomize the vibration characteristics as the natural frequency and mode shapes, of copse discs with d

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13

Xie, Jian Bin, Jing Fan, Zhi Liang Wang, and Tian Chun He. "The Stress Concentration Effect around the Hole in Flat Plate." Advanced Materials Research 538-541 (June 2012): 1573–78. http://dx.doi.org/10.4028/www.scientific.net/amr.538-541.1573.

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Using finite element method, models of different element mesh density for the center hole in flat plate were established according to one actual steel plate with central circular hole. The stress concentration coefficients of these models were calculated by means of numerical method. Then the calculated results were compared with the theoretical solution results of Elastic Mechanics. And it was analyzed subsequently that the influences which were caused by different element mesh density on the stress concentration coefficients around the hole in flat plate. The relationship between the element

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14

Arab, Najmeddin. "Deformation Solution in Thin Ring Plates with Circular Holes." Applied Mechanics and Materials 459 (October 2013): 380–85. http://dx.doi.org/10.4028/www.scientific.net/amm.459.380.

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In this research, deformation process of a thin ring plate with circular hole has been analyzed. Regarding the material characteristics and forming facilities, various forming in a blank with are possible Deep drawing without variation in central hole diameter and also by variation in hole diameter and Flanging when the outer diameter of blank is constant or variable. By taking into account the thickness variations, and work hardening, the forming of thin ring plate at plane stress condition has been considered. It is shown that the deformation procedure of each point in the blank can be descr

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15

Yasniy, P., O. Dyvdyk, O. Semenets, V. Yasnii, and A. Antonov. "Fatigue crack growth in aluminum alloy from cold expanded hole with preexisting crack." Scientific journal of the Ternopil national technical university 99, no. 3 (2020): 5–16. http://dx.doi.org/10.33108/visnyk_tntu2020.03.005.

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The fatigue life of aircraft structure elements with operational damage in the vicinity of the hole was investigated. The plates 60 mm wide and 6 mm thick made of D16chT aluminum alloy with a central hole were taken for the study. Fatigue damage was examined with an corner quarter-elliptical fatigue crack with a length of 1,25 mm, which was initiated from an edge notch of 0,5 x 0,5 mm. The fatigue crack growth rate on the surface of the plate after mandrel hole with cold expansion degree i = 2,7% increases up to15 times and residual lifetime in three times compared to the virgin plate.

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16

Su, Shao Qing, and Ya Qi Che. "Applying Condition of Kirsch’s Stress Solution for Plate with Central Hole in the Engineering." Applied Mechanics and Materials 166-169 (May 2012): 3012–17. http://dx.doi.org/10.4028/www.scientific.net/amm.166-169.3012.

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The stress concentration around a hole in an infinite plate is discussed in elasticity. However, the problem that how large of a plate can be considered as an infinite plate does not be solved still in engineering. Based on the analysis of prerequisite of Kirch’s solution in the rectangular coordinates, two indicators defined as dimensionless stresses are proposed to determine the application range of Kirch’s stress solution. In relation to the diameter of the central hole, several minimum coefficients of the dimension of the plate are obtained and discussed. These coefficients are useful to e

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17

Zhao, Y. H., and J. Huang. "Photoviscoelastic stress analysis of a plate with a central hole." Experimental Mechanics 41, no. 4 (2001): 312–18. http://dx.doi.org/10.1007/bf02323924.

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18

Young, J. B., and P. N. Campbell. "A stress intensity factor solution due to holes ahead of growing cracks in thin sheet material." Aeronautical Journal 90, no. 891 (1986): 1–5. http://dx.doi.org/10.1017/s0001924000015165.

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SummaryThe variation of the Crack Stress Intensity Factor (SIF), for two cracks growing from one hole only in an array of holes in an isotropic material under uni-axial tension has been studied. The effect of the fastener hole ahead of the growing crack was found to give an increase in the SIF only when the crack was within about one and a half diameters of the approached hole edge, compared with the level predicted by considering a single central hole in a plate. An equation suitable for inclusion in a crack growth program has been derived from the research results.

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19

Shilkrut, D., A. Uziel, and S. Gruntman. "Elastic stress concentrations in a square plate with a large hole under uniaxial loading." Journal of Strain Analysis for Engineering Design 22, no. 1 (1987): 55–61. http://dx.doi.org/10.1243/03093247v221055.

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The elastic stress concentrations in an infinite plate with a circular central hole which is loaded uniaxially, is a classical problem in the theory of elasticity. The aim of this work is to investigate the stress concentration phenomena in a uniaxially loaded square plate with a large central circular hole. Various load distributions on the external boundary are discussed. As a result of the numerical method and the experimental work, carried out on photelastic models, interesting stress distributions were found. (1) Both compressive and tensile stresses were found in the minimal section perp

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20

Guo, Yan, Yanan Jiang, and Bin Huang. "Independent coordinate coupling method for vibration analysis of a functionally graded carbon nanotube–reinforced plate with central hole." Advances in Mechanical Engineering 11, no. 8 (2019): 168781401987292. http://dx.doi.org/10.1177/1687814019872924.

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In this article, the free vibration of a functionally graded carbon nanotube–reinforced plate with central hole is investigated by means of the independent coordinates-based Rayleigh–Ritz method. For the proposed method, the kinematic and potential energies are substituted into Lagrange’s equation in order to obtain the equation of motion. However, the total energies are computed by the difference of energies between the hole domain and the plate domain. By applying the displacement matching condition at the hole domain, two coordinate systems are coupled. For the Rayleigh–Ritz method, the mod

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21

Kang, Jae-Hoon. "Exact deformation of a rectangular plate with a central circular hole under in-plane loads." KSCE Journal of Civil Engineering 20, no. 6 (2015): 2492–98. http://dx.doi.org/10.1007/s12205-015-0510-1.

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22

Wysmulski, Pawel. "Failure Mechanism of Tensile CFRP Composite Plates with Variable Hole Diameter." Materials 16, no. 13 (2023): 4714. http://dx.doi.org/10.3390/ma16134714.

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Real thin-walled composite structures such as aircraft or automotive structures are exposed to the development of various types of damage during operation. The effect of circular hole size on the strength of a thin-walled plate made of carbon fibre-reinforced polymer (CFRP) was investigated in this study. The test object was subjected to tensile testing to investigate the strength and cracking mechanism of the composite structure with variable diameter of the central hole. The study was performed using two independent test methods: experimental and numerical. With increasing diameter of the ce

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23

Al Qablan, Husam. "Applicable Formulas for Shear and Thermal Buckling of Perforated Rectangular Panels." Advances in Civil Engineering 2022 (January 19, 2022): 1–14. http://dx.doi.org/10.1155/2022/3790462.

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The goal of this study is to create semiempirical formulations for predicting thermal and shear buckling loads of perforated rectangular isotropic panels for eight combinations of boundary conditions. The finite element method (FEM) was used to develop and evaluate empirical formulations. In this study, the influences of plate aspect ratios, boundary conditions, and perforation sizes on the buckling strength of perforated panels subjected to shear and thermal loads are investigated. The proposed formulas will enable consistent and reliable computation of the buckling loads for perforated recta

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24

Srinivas, Mr D. "Stress Concentration of Rectangular Plate with Central/Off-Central Circular Hole under Uni-Axial Loading." International Journal for Research in Applied Science and Engineering Technology 7, no. 7 (2019): 895–98. http://dx.doi.org/10.22214/ijraset.2019.7144.

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25

Wysmulski, Pawel. "Analysis of the Effect of an Open Hole on the Buckling of a Compressed Composite Plate." Materials 17, no. 5 (2024): 1081. http://dx.doi.org/10.3390/ma17051081.

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This paper investigates the effect of an open hole on the stability of a compressed laminated composite plate. The study was carried out in two ways: using experimental tests and numerical analysis. As a result of the experiment, the buckling form and path of the plate were recorded. The form of buckling was determined using the ARAMIS non-contact measurement system. The critical load value was determined from the working path using the approximation method. The experimental results were verified by numerical analysis based on the finite element method. FEM investigations were carried out in t

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26

Elsayed, M. M., M. O. Hendy, and E. E. El Soally. "A new approach for the determination of residual stresses in biaxially stressed plates." Journal of Strain Analysis for Engineering Design 28, no. 3 (1993): 181–86. http://dx.doi.org/10.1243/03093247v283181.

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This paper presents a modified hole-drilling technique for measuring residual stresses in a finite width plate subjected to biaxial tensile loading. Instead of using a special strain rosette containing three elements, only two strain gauges are used to determine the values of relaxed strains and hence the residual stresses in a biaxially stressed plate. It also gives a new approach which measures the radial relieved strains in two strain gauges mounted on a plate due to drilling a small central hole and then enlarging it. The corresponding residual stresses and their directions are derived.

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27

Niu, Xuejuan, Wenfeng Pan, and Yang Li. "MCT failure analysis of variable stiffness composite plate with a central hole." Archive of Applied Mechanics 88, no. 12 (2018): 2283–92. http://dx.doi.org/10.1007/s00419-018-1454-y.

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28

He, Han Xin, and Jian Long Zhou. "The Experimental Study and CFD Analysis of Vortex-Excited Vibration of the Central-Open Box Section Cable Bridge." Advanced Materials Research 368-373 (October 2011): 1208–12. http://dx.doi.org/10.4028/www.scientific.net/amr.368-373.1208.

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As a new type of section, central-open box sections are more and more popular. Some existed bridges of central-open box section can not to be used because of vortex-excited resonance. Based on this situation, the paper taking the Hongkong-Zhuhai-Macao River-sea ship canal Bridge for example, takes measures of taking the central bottom plate opening hole, changing the angle of web, and setting baffle, according the experimental study and CFD analysis, it is obtained that different aerodynamic sections are various in the character of vortex-excited, although taking the central bottom plate openi

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29

Lin, S. J., Don R. Matthys, and R. E. Rowlands. "Using Airy Function to Thermoelastically Separate Stresses in a Central Circularly Perforated Plate." Applied Mechanics and Materials 7-8 (August 2007): 63–72. http://dx.doi.org/10.4028/www.scientific.net/amm.7-8.63.

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Thermoelastic Stress Analysis (TSA) information is proportional to the change in the sum of the principal stresses. Since one often has to know the magnitude of individual stresses, additional experimental methods or data are frequently required to ‘separate the stresses’. This paper demonstrates the ability to evaluate individual stresses in a uniaxially-loaded finite plate with a central circular hole from TSA-recorded information without supplementary experimental data. Measured temperatures are combined with an Airy stress function and some limited traction-free conditions. The present tec

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30

Stepanova, L. V., and R. M. Zhabbarov. "QUAZILINEARIZATION METHOD FOR THE SOLUTION TO THE PROBLEM OF PLATE WITH THE CENTRAL CIRCULAR HOLE UNDER CREEP REGIME." Vestnik of Samara University. Natural Science Series 23, no. 2 (2017): 44–50. http://dx.doi.org/10.18287/2541-7525-2017-23-2-44-50.

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The approximation solution of the problem for an infinite plate with the circular hole under creep regime is obtained by the quazilinearization method. Four approximations of the solution of the nonlinear problems are found. It is shown that with increasing of the number of approximations the solution converges to the limit numerical solution. It is worth to note that the tangential stress reaches its maximum value not at the circular hole but at the internal point of the plate. It is also shown that quazilinearization method is an effective method for nonlinear problems.

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Eyvazov, Etimad Bayramoglu, and Mecit Öge. "Stress state of a polygonal plate having a central circular hole with two linear cracks in the small physical non-linear condition." Mechanical Sciences 10, no. 2 (2019): 553–60. http://dx.doi.org/10.5194/ms-10-553-2019.

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Abstract. In this study, the stress state of a polygonal plate having a central circular hole with two linear cracks was considered. External forces were applied to the contours of polygonal plate and internal forces were applied to the contours of the circular hole. Conformal mapping function, initially developed by Kuliyev, was used to the make stress analysis of the polygonal plate in physical non-linear statement. As a result, stress concentrations were determined by using conformal mapping function at the end points of cracks. Critical loads where fracture began were defined for different

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32

Engidaw, Angaw Chaklu, Araya Abera Betelie, and Daniel Tilahun Redda. "Experimental determination of strain in thin aluminum plate with central hole subjected to far-field tensile loading using digital image correlation (DIC)." Engineering Solid Mechanics 12, no. 4 (2024): 423–36. http://dx.doi.org/10.5267/j.esm.2024.4.002.

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A flat Aluminum specimen with a geometric discontinuity, which allows testing of the applicability of 2D and 3D Digital Image Correlation Strain measurements, has been considered for this research since it is prone to high stress concentration via Addis Ababa Institute of Technology research interest. Experimental strain using digital image correlation and geometry measurements should be measured with estimated material properties and compare the results with theoretical model predictions. Aluminum plate with central hole were subjected for far field stress in the Machine shop of School of Mec

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Berkane, Ishak, and Zohra Labed. "Finite element analysis of stress concentration singularities in orthotropic/isotropic hole plates on an aircraft wing." South Florida Journal of Development 5, no. 12 (2024): e4764. https://doi.org/10.46932/sfjdv5n12-022.

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The cutouts in the ribs of aircraft wings create stress concentrations. Stress concentrations in an elastic body are very important in structural design and are mainly caused by two mechanisms: the concentration of force acting on a body and geometric discontinuities in the object, such as holes or sudden changes in the geometry of the object's surface. To obtain equivalent stresses and strains for a wing rib without a cutout and with a circular cutout, we considered a perforated plate as the test piece. We studied the stress concentration factor (SCF), around a circular central hole in isotro

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34

OHTAKI, Seiichi, Shin KOBAYASHI, and Takahiro YAMAMOTO. "507 The Finite Element Analysis of Thin Plate with a Central Flat Hole." Proceedings of the 1992 Annual Meeting of JSME/MMD 2001 (2001): 491–92. http://dx.doi.org/10.1299/jsmezairiki.2001.0_491.

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Kishore, M. L. Pavan, Sreenivasulu Bezawada, and B. C. Raghu Kumar Reddy. "Modal Analysis of Rectangular Plate with Central Hole Subjected to Various End Conditions." Materials Today: Proceedings 4, no. 2 (2017): 1653–61. http://dx.doi.org/10.1016/j.matpr.2017.02.004.

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36

Horstman, C. L., R. L. Crawford, T. Vaughn, S. Elder, R. McLaughlin, and M. Maxwell. "The effects of screw placement on plate strain in 3.5 mm dynamic compression plates and limited-contact dynamic compression plates." Veterinary and Comparative Orthopaedics and Traumatology 22, no. 02 (2009): 125–31. http://dx.doi.org/10.3415/vcot-08-02-0023.

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SummaryThe objective of this study was to evaluate the effect of screw omission on plate strain during axial load to failure and cycling using a Delrin rod gap model. In addition, the differences between the 3.5 mm limited-contact dynamic compression plate (LC-DCP) and the 3.5 mm dynamic compression plate (DCP) were evaluated. Six, 12-hole LC-DCP and DCP plates were applied to Delrin rods with a 1 cm gap located within the central portion of the plate. Six screw configurations were tested with the following variations: three proximal and three distal (six open), four proximal and three distal

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37

Fethallah, Amara, and Samir Deghboudj. "A Three-Node Triangular Constant Strain Element for Evaluation of Stress Concentration Factor of a Rectangular Thin Plate Under Tension Load." Revue des composites et des matériaux avancés 32, no. 5 (2022): 229–35. http://dx.doi.org/10.18280/rcma.320503.

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In many engineering fields such as aerospace, marine, automotive and mechanical, the design of planar structures consisting of rectangular plates commonly requires the use of holes as a technological solution in fastening assemblies. The major goal of this research is to examine the impact of stress concentration factors (SCF) in the specific case of planar structures, highlight their relevance as a potential source of structural failure, and compare the various techniques employed to gauge their magnitude. Particular emphasis will be placed on rectangular plates with holes since these plates'

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38

Paul, Surajit Kumar. "Effect of punch geometry on hole expansion ratio." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 234, no. 3 (2019): 671–76. http://dx.doi.org/10.1177/0954405419863222.

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Stretch-flangeability of sheet metal is normally quantified by hole expansion ratio. Researchers have determined hole expansion ratio with various punch geometries such as conical, flat-bottom and hemispherical, and reported different hole expansion ratio values for identical test condition. Finite element investigation confirms that alteration of deformation path with punch geometries consequence different hole expansion ratio values. Necking and failure take place slightly away from the central hole edge for flat-bottom and hemispherical punches, while at the central hole edge for conical pu

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Dzuba, A. S., S. I. Eleonsky, M. D. Zajtsev, and V. S. Pisarev. "Damage indicators evolution during cyclic loading of composite plate with hole." Известия Российской академии наук Механика твердого тела, no. 2 (November 12, 2024): 249–68. http://dx.doi.org/10.31857/s1026351924020128.

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Novel experimental method, which provides quantitative description of damage indicators evolution caused by fatigue loading of composite specimens with stress concentrators, was developed. Damage parameters are derived as deformation response to artificial notch inserting. This notch is extended from the edge of central through hole in plane rectangular specimen under constant external load. Current values of damage indicators are obtained at different stages of fatigue loading. These data reveal dependencies of required parameters on loading cycle number. The damage accumulation function for

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Jehhef, Kadhum Audaa. "Study Effect of Central Rectangular Perforation on the Natural Convection Heat Transfer in an Inclined Heated Flat Plate." Journal of Engineering 21, no. 9 (2015): 185–204. http://dx.doi.org/10.31026/j.eng.2015.09.12.

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Anumerical solutions is presented to investigate the effect of inclination angle (θ) , perforation ratio (m) and wall temperature of the plate (Tw) on the heat transfer in natural convection from isothermal square flat plate up surface heated (with and without concentrated hole). The flat plate with dimensions of (128 mm) length × (64 mm) width has been used five with square models of the flat plate that gave a rectangular perforation of (m=0.03, 0.06, 0.13, 0.25, 0.5). The values of angle of inclination were (0o, 15o 30o 45o 60o) from horizontal position and the values of wall temperature (50

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Matsumoto, N., S. Ohtaki, M. Ohira, and H. Kasayama. "Elastic-Plastic Behaviour of a Plate with a Central Hole by Photoelastic Coating Method." Applied Mechanics and Materials 3-4 (August 2006): 27–32. http://dx.doi.org/10.4028/www.scientific.net/amm.3-4.27.

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An application of the elastic-plastic problem by the photoelastic coating method is presented in this paper. A general procedure of this experiment, such as image processing and separation of the difference of principal strain to obtaine stresses from isochromatic fringes is referred. The methodology to extract centre lines of coloured isochromatic fringes is explained. Experiments are conducted with cross-shaped aluminum specimens with a circular hole subjected to uniaxial tension and equi-biaxial tension. Results of image processing are shown, and the distribution of difference of principal

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Stepanova, L. V., and R. M. Zhabbarov. "REFINED ANALYSIS OF STEADY STATE CREEP OF A ROTATING DISK AND A PLATE WITH A CENTRAL HOLE UNDER UNIFORM TENSILE LOAD BY THE QUAZILINEARIZATION METHOD." Vestnik of Samara University. Natural Science Series 26, no. 1 (2020): 78–94. http://dx.doi.org/10.18287/2541-7525-2020-26-1-78-94.

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Refined analysis of the steady state creep of a rotating disk and a plate with a central hole under uniformtensile load by the quasilinearization method is presented. It is shown that the high values of the creepexponent in power law constitutive equations require more iterations in the framework of the quasilinearizationmethod in each problem. The approximation solution of the problem for an infinite plate with the circularhole under creep regime is obtained by the quazilinearization method. Four approximations of the solution ofthe nonlinear problems are found. It is shown that with increasi

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Yu, Qing Min, Zhu Feng Yue, and Yong Shou Liu. "Numerical Study on Elastic-Plastic Stress Field Near the Cooling Holes of Nickel-Based Single Crystal Air-Cooled Blades." Key Engineering Materials 324-325 (November 2006): 563–66. http://dx.doi.org/10.4028/www.scientific.net/kem.324-325.563.

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In this paper, a plate containing a central hole was used to simulate gas turbine blade with cooling hole. Numerical calculations based on crystal plasticity theory have been performed to study the elastic-plastic stress field near the hole under tension. Two crystallographic orientations [001] and [111] were considered. The distributions of resolved shear stresses and strains of the octahedral slip systems {110}<112> were calculated. The results show that the crystallographic orientation has remarkable influence on both von Mises stress and resolved shear stress distributions. The resol

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Ueno, Katsuya, Masahiro Nonaka, Tetsuo Hashiba, et al. "Primary central nervous system lymphoma of the tectal plate in adult." Surgical Neurology International 13 (July 22, 2022): 319. http://dx.doi.org/10.25259/sni_356_2022.

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Background: Primary central nervous system lymphoma (PCNSL) originating in the brainstem is uncommon. In particular, PCNSL confined to the tectal plate in adults has never been reported in the past. The case of a 53-year-old man who was diagnosed with PCNSL in the tectal plate is reported. Case Description: The patient was referred to our hospital with a 1-month history of disorientation and magnetic resonance imaging showed hydrocephalus with an enhancing lesion in the tectum. Preoperative blood tests showed a high serum soluble interleukin-2 receptor level of 624 U/ml. Through a single burr

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Urbanová, Lucie, Iva Blažek-Fialová, Robert Srnec, Jan Pěnčík, Přemysl Kršek, and Alois Nečas. "Mathematical model of mechanical testing of bone-implant (4.5 mm LCP) construct." Acta Veterinaria Brno 81, no. 2 (2012): 211–15. http://dx.doi.org/10.2754/avb201281020211.

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The study deals with the possibility of substituting time- and material-demanding mechanical testing of a bone defect fixation by mathematical modelling. Based on the mechanical model, a mathematical model of bone-implant construct stabilizing experimental segmental femoral bone defect (segmental ostectomy) in a miniature pig ex vivo model using 4.5 mm titanium LCP was created. It was subsequently computer-loaded by forces acting parallel to the long axis of the construct. By the effect of the acting forces the displacement vector sum of individual construct points occurred. The greatest displ

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Nečas, Alois, Pavel Proks, Lucie Urbanová, et al. "Radiographic Assessment of Implant Failures of Titanium 3.5 LCP vs. 4.5 LCP Used for Flexible Bridging Osteosynthesis of Large Segmental Femoral Diaphyseal Defects in a Miniature Pig Model." Acta Veterinaria Brno 79, no. 4 (2010): 599–606. http://dx.doi.org/10.2754/avb201079040599.

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The study describes types, absolute and relative numbers of implant failures in flexible bridging osteosynthesis using a six-hole 3.5 mm titanium Locking Compression Plate (n = 9) or a five-hole LCP 4.5 mm titanium (n = 40) selected for the fixation of segmental ostectomy of femoral diaphysis in the miniature pig used as an in vivo model in a study on the healing of a critically sized bone defect using transplantation of mesenchymal stem cells combined with biocompatible scaffolds within a broader research project. Occasional implant failure was evaluated based on radiographic examination of f

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Al-fulayih, Rana zeyad abdulfattah, Ammar Yaseen Burjes, and Edrees Edaan Ghadeer. "Study the Stress Analysis of a Rectangular Plate with a Central Cut for Different Mesh by Ansys." International Academic Journal of Science and Engineering 10, no. 2 (2023): 169–75. http://dx.doi.org/10.9756/iajse/v10i2/iajse1021.

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The stress study of concentration factor and maximum stress (σmax) of the rectangular plate with fixed dimensions in two cases with a central circular hole in case-1& three holes in case-2 are analyzed through analytical, graphical methods, and FEM by using Ansys version (2020 R1) with calculated the percentage error (P.E %) for five readings of elements of mesh (1, 2, 3, 4, 5) mm is achieved, each case alone. The results for two cases are fixed at the short end and loaded by (1000 N) on the other side as they stretched from this end, the results for the values of (σmax) and SCF are shown

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You, Xiang, Zhiyu Wang, Qingyuan Wang, Mengqin Cao, Mengqin Shen, and Wanqiu Huang. "Effect of Shot Blasting on Fatigue Strength of Q345B Steel Plate with a Central Hole." Metals 7, no. 12 (2017): 517. http://dx.doi.org/10.3390/met7120517.

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Alharthi, Hamzah, and Mohammed Y. Abdellah. "Stress Analysis and Strength Prediction of Carbon Fiber Composite Laminates with Multiple Holes Using Cohesive Zone Models." Polymers 17, no. 1 (2025): 124. https://doi.org/10.3390/polym17010124.

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Composite materials play a crucial role in various industries, including aerospace, automotive, and shipbuilding. These materials differ from traditional metals due to their high specific strength and low weight, which reduce energy consumption in these industries. The damage behavior of such materials, especially when subjected to stress discontinuities such as central holes, differs significantly from materials without holes. This study examines this difference and predicts the damage behavior of carbon fiber composites with multiple holes using a progressive damage model through finite elem

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Turkova, Vera, and Larisa Stepanova. "FINITE ELEMENT ANALYSIS OF BIAXIAL CYCLIC TENSILE LOADING OF ELASTO-PLASTIC PLATE WITH CENTRAL ELLIPTICAL HOLE." PNRPU Mechanics Bulletin 3 (September 30, 2016): 207–21. http://dx.doi.org/10.15593/perm.mech/2016.3.14.

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