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Artykuły w czasopismach na temat „Curved block structure”

Autor: Grafiati

Data publikacji: 14 grudnia 2024

Data aktualizacji: 31 lipca 2025

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1

Huang, Tao, and Yi Liu. "The Analysis of Structure Deformation Using DDA with Third Order Displacement Function." Advanced Materials Research 446-449 (January 2012): 906–16. http://dx.doi.org/10.4028/www.scientific.net/amr.446-449.906.

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Third order displacement function is introduced into DDA (DDA3O), which can easy to analysis the nonlinear distribution of deformation, stress and strain within a single block. In this paper, additional nodes were inserted on the boundary. So, when large deformation is involved, even the original straightly boundary of block will deform to one formed by curved edges, the simplex integration along the curved edge can increase accuracy and simulation of contact between blocks can be more reasonable. On the other hand，the problem of transferring the initial stress from previous step to next step

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Dong, Chang Zhou, and Chen Qu. "Analysis of Steel-Concrete Composite Structure Element." Applied Mechanics and Materials 94-96 (September 2011): 402–5. http://dx.doi.org/10.4028/www.scientific.net/amm.94-96.402.

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The structure of eccentric degenerated 3-D shell element of thin-wall steel tube concrete composite structure and the connection with 3-D block isoparametric element has been discussed using finite element method. Without considering the intensity limit of delamination damage of the two materials, an integrated stiffness matrix is formed with the combination of stiffness matrix of steel-wall shell element and that of concrete spatial block element. In order to make the superposition rule may be used at the joint of 8-node curved shell element and 20-node block element, an eccentric 8-node shel

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3

Lin, Yu-Liang, Ming-Hsiang Cheng, Chun-Wei Chang, Chien-Wei Chu, Chih-Ting Liu, and Jiun-Tai Chen. "Curved block copolymer nanodiscs: structure transformations in cylindrical nanopores using the nonsolvent-assisted template wetting method." Soft Matter 15, no. 41 (2019): 8201–9. http://dx.doi.org/10.1039/c9sm01633c.

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Saini, Paramdeep, Apoorv Pandhi, and A. K. Darpe. "An Experimental Study on the Use of Active Constrained Layer Damping for Thin Curved Smart Shell Structures." Advances in Science and Technology 56 (September 2008): 309–14. http://dx.doi.org/10.4028/www.scientific.net/ast.56.309.

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Thin Open Curved Shell Structures constitute the major building block of many critical structures such as Aircraft Cabins, Ship Hulls and bodies of rockets and missiles. In the present work, an open thin curved shell made of Aluminium material has been chosen to investigate the potential of ACLD effectiveness with MFC Actuator. The shell ACLD system has been modelled using system identification method and converted into state space form for designing the control law of the LQR controller. Finite Element Analysis of the bare structure has been performed in ANSYS. Using modal solution results, t

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5

Yamashita, Minoru, and Toshio Hattori. "Onset of Progressive Buckling by Inertia Force in Axial Impact of Straight and S-Curved Square Tubes." Advanced Materials Research 445 (January 2012): 847–52. http://dx.doi.org/10.4028/www.scientific.net/amr.445.847.

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For the improvement of the deformation characteristic and the energy absorption efficiency of the tubular structure at impact event, a method generating the first buckling lobe using the inertia force was investigated. The solid block was attached to the wall so that its inertia force causes the partial plastic deformation that plays a role of the trigger of progressive buckling at the beginning of impact. Drop-weight impact experiment revealed that the onset of progressive buckling was achieved at the desired portion by the method. To increase the variety of tube shapes, numerical examination

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6

Petro, Kyrychok, Paliukh Oleksandr, and Oliynyk Vоlоdymyr. "DETERMINING THE INFLUENCE OF THE THICKNESS OF AN ADHESIVE LAYER ON A CHANGE IN THE ANGLES OF CONTACT AND TANGENT ANGLES." Eastern-European Journal of Enterprise Technologies 3, no. 1 (105) (2020): 52–67. https://doi.org/10.15587/1729-4061.2020.203439.

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A method has been proposed for establishing experimentally the optimum ratio of the thickness of a W-shaped adhesive layer of the spine part of a book block sewn with threads to the necessary and sufficient efforts that are applied for its bending in the block opening process. The dependence of the effort applied to the opening of a block in a page or stochastic sequence, as well as a place of bending the spine’s adhesive plate, influences the duration of the book’s use until the beginning of irreversible destructive processes. It has been shown that increasing the thickness of the

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7

Chan, Vincent W. S., Hugo Nova, Sherif Abbas, Colin J. L. McCartney, Anahi Perlas, and Da Quan Xu. "Ultrasound Examination and Localization of the Sciatic Nerve." Anesthesiology 104, no. 2 (2006): 309–14. http://dx.doi.org/10.1097/00000542-200602000-00017.

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Background Few studies have examined the use of ultrasound for sciatic nerve localization. The authors evaluated the usefulness of low-frequency ultrasound in identifying the sciatic nerve at three locations in the lower extremity and in guiding needle advancement to target before nerve stimulation. Methods In this prospective observational study, 15 volunteers underwent sciatic nerve examination using a curved ultrasound probe in the range of 2-5 MHz and a Philips-ATL 5000 unit (ATL Ultrasound, Bothell, WA) in the gluteal, infragluteal, and proximal thigh regions. Thereafter, an insulated blo

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8

Polyakov, V. A. "Automation of the Algorithm for Designing a Reinforcement Scheme for a Structure Made of Composite Materials." LETI Transactions on Electrical Engineering & Computer Science 15, no. 7 (2022): 14–19. http://dx.doi.org/10.32603/2071-8985-2022-15-7-14-19.

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The paper considers the development and automation of an algorithm for designing a reinforcement scheme based on bending deformation. The algorithm is presented in the form of a block diagram. When searching for a reinforcement trajectory, the algorithm takes into account the specified criteria for searching and designing a scheme. On the basis of the algorithm, a program is developed that can operate with the data of the model under study, use them to construct and synthesize the reinforcement trajectory. The program code is based on a simple example – bending deformation. The stress-strain s

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9

Lee, Jinwoo. "(Invited) Optimizing the Activity of Oxygen Reduction Reaction Via Structural Engineering of Support for Fe-N-C Electrocatalysts in Proton Exchange Membrane Fuel Cells." ECS Meeting Abstracts MA2024-02, no. 41 (2024): 2681. https://doi.org/10.1149/ma2024-02412681mtgabs.

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The scarcity and costliness of platinum group metals in PEMFC cathodes hinder commercialization. Despite the promise of Fe-N-Cs electrocatalysts as alternatives, their oxygen reduction reaction (ORR) performance falls short. To address this, two carbon support-structural engineering methods were devised. Firstly, defect adjustment in ZIF-NC carbon support, derived from zeolitic imidazolate frameworks, via CO2 activation. Secondly, introduction of mesopores into ZIF-NC using the block co-polymer soft-template method. Controlled degree of defect sites in supports enhance intrinsic activity of Fe

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10

Li, Peiyong, Zheng Tang, Yuwen Huang, Yunpeng Wang, and Chong Wang. "Distortion Control and Prevention by Fabrication Techniques in Cold Bent Steel Frame with Perforated Web." Journal of Ship Production and Design 37, no. 01 (2021): 37–44. http://dx.doi.org/10.5957/jspd.07190038.

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Cutouts are widely used in ships and offshore structures. Cutouts of big size are used mainly for inspection, passing pipes, and weight reduction. Some cutouts of small size may be used for various purposes, such as water hole in the web of stiffeners. The stiffeners with perforated web are the most commonly adopted structure members in the shipbuilding industry, and they are mainly fabricated by cutting and bending the frame to meet the requirements of desired design configuration. In ship production, the manufacture of the curved stiffener with holes is desirable to perforate first and then

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11

Khlebnikov, Denis V. "Standard Units in Miniatures of the Manuscript no. 20 in Russian State Library, Fund 173.I." Vestnik of Saint Petersburg University. Arts 13, no. 3 (2023): 508–34. http://dx.doi.org/10.21638/spbu15.2023.307.

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The proposed article is addressed to the phenomenon of typical graphic elements used in Russian late medieval visual art; the study is based on the material of miniatures of the wellknown illuminated manuscript of the Commentated Prophet Book from the collection of the Moscow Theological Academy. Previously, a detailed comparison of the drawing of paper icon samples, and later of the icons themselves of the 15th–16th centuries as well, led to the conclusion that icon painters widely use a set of the same systematically repeating graphic elements. They can always be seen in almost any icon, in

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12

Ren, Yingying, Uday Kusupati, Julian Panetta, et al. "Umbrella meshes." ACM Transactions on Graphics 41, no. 4 (2022): 1–15. http://dx.doi.org/10.1145/3528223.3530089.

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We present a computational inverse design framework for a new class of volumetric deployable structures that have compact rest states and deploy into bending-active 3D target surfaces. Umbrella meshes consist of elastic beams, rigid plates, and hinge joints that can be directly printed or assembled in a zero-energy fabrication state. During deployment, as the elastic beams of varying heights rotate from vertical to horizontal configurations, the entire structure transforms from a compact block into a target curved surface. Umbrella Meshes encode both intrinsic and extrinsic curvature of the ta

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13

Yan, Juncen. "Noncontact Defect Detection Method of Automobile Cylinder Block Based on SVM Algorithm." Mobile Information Systems 2022 (August 29, 2022): 1–11. http://dx.doi.org/10.1155/2022/5849422.

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Based on the problems encountered in the gateway system, this article developed the SVM algorithm support vector machine auxiliary system based on the function of the hybrid network gateway to help the gateway dynamically adjust its operating status to ensure the stability of the gateway system and the real-time internal data. This paper studies the noncontact defect detection system of automobile cylinder block on the basis of the SVM algorithm. There are many thin holes in the wall of automobile engine cylinder block, the structure is complex, and the processing is easy to deform. In order t

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14

Kasliwal, Prasad Jaychand. "Fluoroscopy-Guided Sacroiliac Joint Injection: Description of a Modified Technique." Pain Physician 19, no. 2;2 (2016): E329—E337. http://dx.doi.org/10.36076/ppj/2016.19.e329.

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Sacroiliac joint (SIJ) pathology is a common etiologic cause for 10 – 27% of cases of mechanical low back pain (LBP) below the L5 level. In the absence of definite clinical or radiologic diagnostic criteria, controlled blocks of the SIJ have become the choice assessment method for making the diagnosis of SIJ pain. The SI joint is most often characterized as a large, auricular-shaped, diarthrodial synovial joint. In reality, its synovial characteristic is limited only to the distal third and anterior third. In SIJ interventions, the lateral view has been underutilized. In our technique, we used

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15

Smith, G. D. W., A. Cerezo, and S. Poulston. "Atom probe studies of catalyst surfaces: structure and chemistry at atomic level." Proceedings, annual meeting, Electron Microscopy Society of America 53 (August 13, 1995): 420–21. http://dx.doi.org/10.1017/s0424820100138476.

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The imaged (apex) region of a field ion microscope (FIM) specimen is sharply curved and has a radius of less than lOOnm. It is thus a reasonably good "model" for one half of a single particle of a metallic catalyst. FIM images show good detail of steps, ledges and kink site atoms (Fig. 1). When combined with a time-of-flight mass spectrometer to form an atom probe (AP), single atom chemical identification becomes possible. The FIM-AP combination has considerable value for the study of heterogeneous catalysts and catalytic reactions, but there are problems due to the high field acting on the sp

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16

Cascardi, Alessio, Francesco Micelli, and Maria Antonietta Aiello. "An Innovative Construction Technique for Curved Structures." Applied Sciences 10, no. 13 (2020): 4465. http://dx.doi.org/10.3390/app10134465.

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In the present paper, an innovative, recently patented technique for the construction of a curved structural member without scaffolds is proposed and illustrated. It consists of a Hinged Lifting Arch (HLA), using Fiber-Reinforced Polymer (FRP) bonded strips. In detail, a series of blocks are cut following an arch geometry and then aligned on the ground floor to bond a composite on their top surface. Moreover, impregnation of the polymeric adhesive is not allowed at the extremities of each block. The fiber sheet is applied continuously along the entire extrados. In this context, hinges are intr

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17

Heuser, J. "Effects of cytoplasmic acidification on clathrin lattice morphology." Journal of Cell Biology 108, no. 2 (1989): 401–11. http://dx.doi.org/10.1083/jcb.108.2.401.

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Reducing the internal pH of cultured cells by several different protocols that block endocytosis is found to alter the structure of clathrin lattices on the inside of the plasma membrane. Lattices curve inward until they become almost spherical yet remain stubbornly attached to the membrane. Also, the lattices bloom empty "microcages" of clathrin around their edges. Correspondingly, broken-open cells bathed in acidified media demonstrate similar changes in clathrin lattices. Acidification accentuates the normal tendency of lattices to round up in vitro and also stimulates them to nucleate micr

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18

Holleran, Elizabeth A., Gladys Gray-Board, Erika L. F. Holzbaur, and Lee D. Peachey. "Fluorescence, Confocal, and Intermediate Voltage Electron Microscopy of Centractin Localization in Transfected PtK2 Cells." Proceedings, annual meeting, Electron Microscopy Society of America 54 (August 11, 1996): 28–29. http://dx.doi.org/10.1017/s0424820100162600.

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Centractin (Arp 1) is an actin-related protein that shares 53% sequence identity with conventional actin and is predicted to have a similar core structure for nucleotide binding. Biochemical studies of centractin, named for its apparent localization to the centrosome, reveal that it is a member of a stable macromolecular complex, dynactin. The dynactin complex consists of at least 9 polypeptides and has been implicated in activating dynein mediated vesicle transport along microtubules. Ultra-structural analysis, by rotary shadowing electron microscopy with antibody decoration, reveals that wit

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19

Sheikhi, Sara, Mohammad Shojaeifard, and Mostafa Baghani. "Finite Bending and Straightening of Hyperelastic Materials: Analytical Solution and FEM." International Journal of Applied Mechanics 11, no. 09 (2019): 1950084. http://dx.doi.org/10.1142/s1758825119500844.

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In this research, an incompressible, isotropic, nonlinear elastic rectangular block and a circular cylindrical sector are studied under bending and straightening moments, respectively. Analytical approaches are presented on implementing of the left Cauchy–Green tensor and Cauchy stresses. In addition, finite element analysis of both problems is carried out using UHYPER user-defined subroutine in ABAQUS to verify the analytical methods. Four different invariant-based strain energy functions, including neo-Hookean, Mooney–Rivlin, Arruda–Boyce, and recently proposed polynomial Exp-Exp models, are

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20

Xiao, Zhang, and Kang Hongpu. "Pressure Relief Mechanism of Directional Hydraulic Fracturing for Gob-Side Entry Retaining and Its Application." Shock and Vibration 2021 (April 10, 2021): 1–8. http://dx.doi.org/10.1155/2021/6690654.

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In order to make clear the pressure relief mechanism and application effect of directional hydraulic fracturing for gob-side entry retaining, the directional hydraulic fracturing was carried out by 400 m in haulage gateway remaining along the goaf in 50108 working face of Hejiata Coal Mine. Taking this as the engineering background, a mechanical model of roof cutting was established and the pressure relief mechanism was clarified. The theoretical research shows that it is the moments of gravity FG of the curved triangular roof plate at the face end, the pressure q of the overlying soft rock, a

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21

Mr. Gaurav S. Chaturvedi, Mr Gaurav S. Chaturvedi, and Dr D. B. Jasutkar Dr. D. B. Jasutkar. "To Analysis the Feasibility of Rubble Mound Sea Wall at Mumbai Costal Road Project." Journal of Advances in Science and Technology 20, no. 1 (2024): 72–77. http://dx.doi.org/10.29070/mw797y06.

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The impact of seawalls on nearby beaches and the dynamics of the coast has not beenadequately studied in the literature. The purpose and function of coastal buildings, particularly seawalls,are sometimes misinterpreted since, in certain situations, they actually contribute to coastal erosioninstead of safeguarding the beach as intended. By influencing the onshoreoffshore and, to some extent,the longshore sand transport, seawalls are purportedly changing the near-shore process, notably thesediment dynamics. Therefore, it is crucial to comprehend how seawalls affect the nearby beach in order toe

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22

Adnan, Muhammad, Faiza Khalid, and Majid Ali. "Compressive Behavior of Interlocking Plastic Blocks Structural Elements Having Slenderness." Buildings 12, no. 12 (2022): 2257. http://dx.doi.org/10.3390/buildings12122257.

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Earthquakes are among of the most harmful and potentially fatal natural disasters. Masonry structures in seismic zones of urban and rural areas around the world pose a threat to human life. Housing that is both affordable and earthquake-resistant in earthquake-prone areas is currently in demand in developing countries. For affordable earthquake-resistant structures in earthquake-prone areas, numerous researchers have studied mortar-free interlocking structures. Plastic blocks are used in order to reduce the mass of the overall structure. To start with, structures under gravity are explored fir

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23

Di Egidio, Angelo, and Alessandro Contento. "Improvement of the Dynamic and Seismic Behaviour of Rigid Block-like Structures by a Hysteretic Mass Damper Coupled with an Inerter." Applied Sciences 12, no. 22 (2022): 11527. http://dx.doi.org/10.3390/app122211527.

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The protection of rigid block-like structures against seismic hazards is a widely studied topic and has been achieved to different degrees with active and passive protection methods. For the protection of rigid block-like structures, this paper proposes the coupling of a rigid block-like structure, modelled as a single rigid block, with an external, auxiliary system through a hysteretic elasto-plastic device. The auxiliary system is constituted by an oscillating mass, whose inertial effects are amplified by the use of an inerter device. The auxiliary system works as a hysteretic mass damper. T

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24

Huang, Wei, Hao Zhen Wu, Guo Xin Chen, Yin Zhang, Jun Yuan Wang, and Dong Zhao. "Mechanical Properties of the Ecological Filling Blocks of the New Composite Wall Based on the Unified Strength Theory." Advanced Materials Research 250-253 (May 2011): 843–48. http://dx.doi.org/10.4028/www.scientific.net/amr.250-253.843.

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In order to make the new composite wall structure the group developed to adapt different regional natural conditions, and along with the demand of gradually in-depth study the damage characteristics of the new composite wall, need to research the mechanical properties of the wall filling materials. In this paper, the ZG-CSS Electronic Universal Testing Machine was used on the uniaxial compressive test of the three blocks(the mud billet block, the cotton stalk block, the recycled EPS lightweight concrete block), to analyze the failure characteristics of the blocks and the other mechanical prope

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Huang, Wei, and Ting Zhang. "Mechanical Properties of the Ecological Filling Blocks of the New Composite Wall Based on the Unified Strength Theory." Applied Mechanics and Materials 727-728 (January 2015): 15–20. http://dx.doi.org/10.4028/www.scientific.net/amm.727-728.15.

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In order to make the new composite wall structure the group developed to adapt different regional natural conditions, and along with the demand of gradually in-depth study the damage characteristics of the new composite wall, need to research the mechanical properties of the wall filling materials. In this paper, the ZG-CSS Electronic Universal Testing Machine was used on the uniaxial compressive test of the three blocks(the mud billet block, the cotton stalk block, the recycled EPS lightweight concrete block), to analyze the failure characteristics of the blocks and the other mechanical prope

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26

Stepanenko, D. A., and A. N. Kindruk. "Variational Problem on Vibrations of Unequal-Thickness Rings and Its Application for Calculating Ultrasonic Vibration Concentrators." Science & Technique 23, no. 4 (2024): 295–303. http://dx.doi.org/10.21122/2227-1031-2024-23-4-295-303.

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The paper considers a method for calculating the natural frequencies of vibrations of unequal-thickness rings, based on application of Hamilton’s variational principle and theories of vibrations of curved beams of the Euler-Bernoulli and Timoshenko type. Solutions of the problem are represented as Fourier series providing possibility of its reduction to the system of linear algebraic equations. The problem of determining natural frequencies is reduced to a generalized problem for the eigenvalues of matrices. Based on a comparison of the numerical results obtained for an eccentric ring with the

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27

Busko, N. A., V. K. Grishchenko, A. V. Barantsova, N. V. Gudzenko, Ya V. Kochetova, and S. N. Ostapyk. "SILICON-CONTAINING OLIGOMERIC AZOINITIATORS IN THE SYNTHESIS OF BLOCK COPOLYMERS." Polymer journal 43, no. 2 (2021): 123–32. http://dx.doi.org/10.15407/polymerj.43.02.123.

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The aim of the work was to develop methods for the synthesis and study of the properties of silicon-containing oligomeric azo- and polyazoinitiators based on bis-γ-hydroxypropylpolysiloxane (HPS) and bis-γ-aminopropylpolysiloxane (APS). Silicon-containing oligomeric azoinitiators using HPS were synthesized on the basis of cyclohexanone azo-bis-isobutyrohydrazone (AGN-CH) and bis-γ-hydroxypropylpolysiloxane bifunctional macrodiisocyanate (MDIHPS). MDIHPS was obtained by the interaction of GPS with 2,4 toluene diisocyanate (2,4-TDI). Oligomeric azoinitiators have been obtained, which have the st

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Bandopadhyay, Somdeb, and Hsien Shang. "SADHANA: A Doubly Linked List-based Multidimensional Adaptive Mesh Refinement Framework for Solving Hyperbolic Conservation Laws with Application to Astrophysical Hydrodynamics and Magnetohydrodynamics." Astrophysical Journal Supplement Series 263, no. 2 (2022): 32. http://dx.doi.org/10.3847/1538-4365/ac9279.

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Abstract We report the development of a nested block-structured adaptive mesh framework to solve multidimensional, time-dependent hyperbolic equations encountered in astrophysics. An approach based on a tabular list is used to construct variants of Hilbert space-filling curves in an iterative fashion to maintain the connectivity of locally refined mesh configurations using a doubly linked list. Modifications are made to conventional boundaries of computational blocks to aid the adaptive mesh. We also describe a well-defined, computationally efficient data structure to hold self-similar mesh un

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Jeter, Britton, Avery E. Broderick, and Roman Gold. "Differentiating disc and black hole-driven jets with EHT images of variability in M87." Monthly Notices of the Royal Astronomical Society 493, no. 4 (2020): 5606–16. http://dx.doi.org/10.1093/mnras/staa679.

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ABSTRACT Millimetre-wavelength very long baseline interferometric (mm-VLBI) observations of M87 by the Event Horizon Telescope (EHT) should provide a unique opportunity to observe and characterize the origins of jet variability already seen at longer wavelengths. Synchrotron spot models have been used to model variability near black holes; this work extends these by allowing spots to shear and deform in the jet velocity field. Depending on the position of the spot, shearing forces can significantly alter the structure of the spot, producing distinct signals in reconstructed images and light cu

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Guo, Wen, Bin Jia, Chun Tao Zhang, Xiao Liu, and Shun Feng Liu. "Low Cycle Test Research on Seismic Performance of Recycled Concrete Block Wall." Applied Mechanics and Materials 548-549 (April 2014): 1712–15. http://dx.doi.org/10.4028/www.scientific.net/amm.548-549.1712.

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The use of concrete aggregate from earthquake damaged building to make blocks which needed for post-disaster reconstruction has brought the social, environmental, economic and other benefits, at the same time respond to the basic state policy of low carbon energy saving. At home and abroad currently focused on the materials properties of recycled aggregate and recycled concrete block basic physical mechanics to study, but research for the material block wall structure performance is less, the research for the wall shear strength and anti-seismic performance of this kind of wall is of great sig

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Nakano, T. "Effects of Cell Structure on Water Sorption for Wood." Holzforschung 57, no. 2 (2003): 213–18. http://dx.doi.org/10.1515/hf.2003.031.

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Summary Contributions of the cell structure of wood to water sorption were examined using the chemical potential change induced by restrained swelling. Thermodynamic analysis revealed that this potential was proportional to the product of moisture content and the bulk modulus of the restraining region in the wood. The modulus of the restricting region, which was calculated from isotherm curves of wood powder and block samples by using the thermodynamically derived relationship, was near that obtained from the swelling strain and stress in the cross section for whole wood. These results demonst

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Gao, Wenwei, Hairong Yang, Le Wang, and Ruilin Hu. "Numerical Simulations of the Soil–Rock Mixture Mechanical Properties Considering the Influence of Rock Block Proportions by PFC2D." Materials 14, no. 18 (2021): 5442. http://dx.doi.org/10.3390/ma14185442.

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Soil-rock mixtures (S-RMs), as a kind of special engineering geological material, need to be studied because of the special structure and complex movement mechanism of their rock blocks, their physical and mechanical properties, and the factors underlying rock block movement in the process of their deformation and failure. In this paper, a series of discrete-element numerical models are constructed in particle flow code software (PFC2D). First, the random structure numerical models of S-RMs with different rock block proportions are established. Then, the parameters of the soil meso-structure a

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Zhu, Fei, Yongcheng Hang, Fenglai Wang, and Shengbao Wang. "Compressive Behavior of Fully Grouted Concrete Bond Beam Block Masonry Prisms." Materials 18, no. 11 (2025): 2589. https://doi.org/10.3390/ma18112589.

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This paper presents a study on the uniaxial compressive behavior of fully grouted concrete bond beam block masonry prisms. A total of 45 (i.e., 9 hollow and 36 fully grouted) specimens were tested, and the failure modes and initial crack were reported. The effects of block strength, grout strength, and loading scheme on the compressive strength of the fully grouted prism were discussed. The results show that the compressive strength of bond beam block prisms increased with an increase in grouting, while they were less affected by the block strength; the peak strength of the grouted block mason

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Zhou, Ji Jun, Huai Fu, Yue Zhang, Yan Li, and De Zhang. "Strength Attenuation and Post Failure Behaviour of Fine Sandstone." Advanced Materials Research 446-449 (January 2012): 3538–43. http://dx.doi.org/10.4028/www.scientific.net/amr.446-449.3538.

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Three types of physical tests were designed to study post failure behaviour and strength attenuation of fine sandstone. Tests include rock compression test, rock unloading test and rock block shear test. The stress-strain curves at different confining pressures had been obtained as well as axial strain-lateral strain curves. The differences of axial strain-lateral strain curves exhibit that stress peak point and the point of fault formation are apparently different for the rock. After the fault is generated, fractured rock slides on the fault surfaces, while confining pressure, material streng

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Baraldi, Daniele, Claudia Brito De Carvalho Bello, Antonella Cecchi, and Filippo Ubertini. "Refined Rigid Block Model for In-Plane Loaded Masonry." Advances in Civil Engineering 2020 (September 29, 2020): 1–13. http://dx.doi.org/10.1155/2020/8844759.

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In this work, a refined rigid block model is proposed for studying the in-plane behavior of regular masonry. The rigid block model is based on an existing discrete/rigid model with rigid blocks and elastoplastic interfaces that already proven its effectiveness in representing masonry behavior in linear and nonlinear fields. In this case, the proposed model is improved by assuming rigid quadrilateral elements connected by one-dimensional nonlinear interfaces, which are adopted both to represent mortar (or dry) joints between the blocks and also to represent inner potential cracks into the block

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Hook, Kristian, Jordan Cheer, and Stephen Daley. "Acoustic Black Holes in Curved Plates." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 265, no. 5 (2023): 2590–97. http://dx.doi.org/10.3397/in_2022_0364.

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Acoustic Black Holes (ABHs) have been shown to produce significant vibration damping in both beams and flat plates. However, it is interesting to determine how more complex structures with singularly curved surfaces are damped by the addition of ABHs. Therefore, this paper presents an investigation into three different ABH designs that can be implemented into a curved plate. The performance of each ABH design is compared in terms of the global structural response of the curved plate.

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Joyce, George A., and William M. Henry. "Modeling the Equilibrium Compressed Void Volume of Carbon Black." Rubber Chemistry and Technology 79, no. 5 (2006): 735–64. http://dx.doi.org/10.5254/1.3547964.

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Abstract In this study, a broad range of furnace carbon blacks from very low to very high structure and fineness were evaluated for compressed void volume, colloidal and in-rubber properties. Compressed void volume measurements were investigated over applied pressures of approximately 18–159 MPa using a commercially available instrument. The void volume data was statistically modeled using logarithmic pressure curves, exponential energy curves and an inverse variable root curve. Parameters generated from the void volume models were analyzed using advanced non-linear multiple regression resulti

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D'Angela, Danilo, Gennaro Magliulo, and Edoardo Cosenza. "Incremental dynamic analysis of rigid blocks subjected to ground and floor motions and shake table protocol inputs." Bulletin of the New Zealand Society for Earthquake Engineering 55, no. 2 (2022): 64–79. http://dx.doi.org/10.5459/bnzsee.55.2.64-79.

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This paper reports the results of an extensive campaign of incremental dynamic analyses (IDA) of rigid rocking blocks under various loading histories, including real ground/floor motions and shake table testing protocol loading histories. Several block geometries are investigated considering various size and slenderness combinations representative of building contents, monumental elements, art objects, components of critical facilities, and other unanchored elements. The spectral response of the block to different loading histories is firstly assessed by highlighting the characteristics of the

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Li, Bin, Wei Huang, Bin Luo, and Guoxin Chen. "Cycle behaviour of precast composite wall with different ecological filled blocks." Advances in Structural Engineering 22, no. 2 (2018): 297–310. http://dx.doi.org/10.1177/1369433218785212.

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This article aims at experimentally investigating a cycle behaviour of a new lateral force-resisting structural system, that is, precast composite walls with ecological filled blocks. For this purpose, a total of five low cyclic loading tests were conducted for the 1:2-scaled precast composite wall specimens with five different kinds of ecological filled blocks, namely, the wheat straw fibre raw soil–based block, the recycled expanded polystyrene lightweight concrete block, the wheat straw fibre cement–based block, the autoclaved aerated concrete block and the cotton straw block. In the test,

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Wu, Dongyue, Hui Su, Shilin Wang, and Wei Chen. "Experimental test for mechanical properties of new tenon composite wall using thermal self-insulation block." Advances in Structural Engineering 24, no. 1 (2020): 79–89. http://dx.doi.org/10.1177/1369433220944508.

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Concrete hollow blocks have the advantages of simplified construction, reduced construction time, and better thermal performance, and can thereby achieve energy conservation in building engineering and significantly improved thermal and mechanical performance. A new tenon composite block is presented to achieve better self-thermal insulation and mechanical performance by integrating thermal materials into blocks. The tenon composite block application requires satisfying mechanical and seismic performance. Therefore, to prove the mechanical and seismic performance of the tenon composite block,

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Aoyagi, Takeshi. "High-throughput prediction of stress–strain curves of thermoplastic elastomer model block copolymers by combining hierarchical simulation and deep learning." MRS Advances 6, no. 2 (2021): 32–36. http://dx.doi.org/10.1557/s43580-021-00008-1.

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Abstract We achieved high-throughput prediction of the stress–strain (S–S) curves of thermoplastic elastomers by combining hierarchical simulation and deep learning. ABA triblock copolymer with a phase-separated structure was used as a thermoplastic elastomer model. The S–S curves of the ABA triblock copolymers were calculated from the hierarchical simulation of self-consistent field theory calculations and coarse-grained molecular dynamics simulations. Because such hierarchical simulations require considerable computational resources, we applied a deep learning technique to accelerate the pre

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Awayo, Daniel Dibaba. "Seismic Fragility Analysis of Hollow Concrete Block Infilled Reinforced Concrete Buildings." International Research Journal of Innovations in Engineering and Technology 06, no. 12 (2022): 52–59. http://dx.doi.org/10.47001/irjiet/2022.612008.

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Masonry infills are usually treated as nonstructural elements in buildings, and their interaction with the bounding frame is often ignored in analysis and design of reinforced concrete structures. The main aim of this study is to develop a seismic fragility curves showing the probability of exceeding a damage limit state for a given structure type subjected to a seismic excitation. For the purpose of this study, three distinct buildings namely, seven-story, eleven-story and sixteen-story, with typical floor plan were proposed as the case study. Each building cases are explicitly modeled as a b

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Paneru, Yagya Raj, and Pratikshya Chalise. "Community Structure, Regeneration Status and Tree Biomass of Shorea robusta Gaertn. in Charpala Community Forest, Rupandehi District, Central Nepal." Journal of Plant Resources 20, no. 1 (2022): 83–92. http://dx.doi.org/10.3126/bdpr.v20i01.56589.

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Sal is a multipurpose tropical tree that grows as the dominant plant species in Nepal’s lowlands. A comparative study of the Sal population structure was carried out in two blocks of Charpala Community Forest, Rupandehi. A total of 161 species of vascular plants, belonging to 135 genera and 69 families, were recorded, where Fabaceae (26 species) was the dominant family. Densities of Sal trees, saplings, and seedlings per hectare were 4000, 1945, and 742 respectively. A reverse J-shaped curve in the population structure of Block 1 indicated active natural regeneration. However, in Block 2, the

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SAFIULLIN, K. R., E. D. LI, R. S. DAVLETBAEV, O. O. SAZONOV, and I. M. DAVLETBAEVA. "INVESTIGATION OF THE EFFECT OF CU(II)-COORDINATED POLYOXYETHYLENE SUBSTITUTED SILICA ON MICROPOROUS BLOCK COPOLYMERS." Herald of Technological University 27, no. 11 (2024): 51–55. https://doi.org/10.55421/1998-7072_2024_27_11_51.

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This research investigates the synthesis of microporous block copolymers (OBCs) using a novel approach involving silica particles modified with copper(II) ions (ASiP-Cu). These modified silica particles contain polyoxyethylene branches and act as catalysts in the copolymerization process. Rigid, coplanar polyisocyanate blocks of an acetal nature (O-polyisocyanates) are synthesized from 2,4-toluylene diisocyanate (TDI). Additionally, a flexible-chain amphiphilic component is utilized, which consists of block copolymers of ethylene and propylene oxides (PPEG) that are terminated with potassium a

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45

Osman, Bashir H., and Zhongfan Chen. "Experimental Studies on the Behaviors of New Energy-Saving Concrete Self-Insulating Load-Bearing Block Wall under Low-Cycle Cyclic Loading." Advances in Materials Science and Engineering 2018 (October 4, 2018): 1–16. http://dx.doi.org/10.1155/2018/4214532.

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Masonry walls are usually designed to resist the effect of lateral and gravity loads resulting from wind or earthquake excitations. This research aimed at investigating the inelastic behavior of a new energy-saving concrete self-insulating load-bearing block wall (ECSLBW) under in-plane cyclic loading. To provide stronger bond between the concrete block units better than the ordinary concrete masonry units, a new masonry system of concrete blocks with special configurations was made. In this experiment, three new self-insulated block wall specimens were designed, manufactured, and tested. Furt

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Liu, Xi-Xuan, Wan-Ru Yan, Yao-dong Xu, and Zi-Jiang Liu. "The low-frequency and broad bandgap characteristics of two-dimensional phononic crystals embedded with acoustic black hole structures." Physica Scripta 100, no. 3 (2025): 035934. https://doi.org/10.1088/1402-4896/adb107.

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Abstract To address the challenge of controlling low-frequency vibration noise, a coupling phononic crystal model embedded with the acoustic black hole (ABH) structures has been designed. By comprehensively studying the complex dispersion curves, vibration modes, and transmission loss, we numerically demonstrate that this coupling structure exhibits good sound insulation performance in the low-frequency range of 64.3 Hz∼665.4 Hz, the bandgap coverage reaches 92.7%, while the effective sound insulation range achieves 89.6% within the frequency range of 1000 Hz. The torsional vibration of the sc

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47

Cool, Vanessa, Lucas Van Belle, Claus Claeys, Elke Deckers, and Wim Desmet. "(Generalized) Bloch mode synthesis for the fast dispersion curve calculation of 3D periodic metamaterials." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 263, no. 4 (2021): 2102–13. http://dx.doi.org/10.3397/in-2021-2052.

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Metamaterials, i.e. artificial structures with unconventional properties, have shown to be highly potential lightweight and compact solutions for the attenuation of noise and vibrations in targeted frequency ranges, called stop bands. In order to analyze the performance of these metamaterials, their stop band behavior is typically predicted by means of dispersion curves, which describe the wave propagation in the corresponding infinite periodic structure. The input for these calculations is usually a finite element model of the corresponding unit cell. Most common in literature are 2D plane me

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Suresh, V., K. Ganesan, and S. Parthasarathy. "PDB-2-PB: a curated online protein block sequence database." Journal of Applied Crystallography 45, no. 1 (2011): 127–29. http://dx.doi.org/10.1107/s0021889811052356.

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This article describes the development of a curated online protein block sequence database, PDB-2-PB. The protein block sequences for protein structures with complete backbone coordinates have been encoded using the encoding procedure of de Brevern, Etchebest & Hazout [Proteins(2000),41, 271–287]. In the current release of the PDB-2-PB database (version 1.0), the protein entries from a recent release of the World Wide Protein Data Bank (wwPDB), which has 74 297 solved PDB entries as of 7 July 2011, have been used as a primary source. The PDB-2-PB database stores the protein block sequences

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Kim, Yong Tai, Tae Jun Kim, Tae Yoon Park, and Chang Doo Jang. "Welding Distortion Analysis of Hull Blocks using Equivalent Load Method Based on Inherent Strain." Journal of Ship Research 56, no. 02 (2012): 63–70. http://dx.doi.org/10.5957/jsr.2012.56.2.63.

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Welding deformation reduces the dimensional accuracy of ship hull blocks and decreases productivity due to the correction work. Prediction and minimizing of welding distortion at the design stage will lead to higher quality as well as higher productivity. Therefore, the development of an effective method to predict accurately the weld distortion of hull blocks considering the fabrication sequences is required. In the case of hull block welding work in shipyards, the welding process of curved stiffened plates has large amounts of workload. This paper suggests an efficient method for predicting

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Liu, Guangfeng, Dianyu Wang, Xiang Peng, et al. "Characterization of Matrix Pore Structure of a Deep Coal-Rock Gas Reservoir in the Benxi Formation, NQ Block, ED Basin." Eng 6, no. 7 (2025): 142. https://doi.org/10.3390/eng6070142.

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In this study, a comprehensive experimental framework was developed to quantitatively characterize the pore structure of a deep coal-rock (DCR; reservoirs below [3000 m]) gas reservoir. Experimentally, petrological and mineral characteristics were determined by performing proximate analysis and scanning electron microscopy (SEM) as well as by measuring vitrinite reflectance and maceral components. Additionally, physisorption and high-pressure mercury injection (HPMI) tests were conducted to quantitatively characterize the nano- to micron-scale pores in the DCR gas reservoir at multiple scales.

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