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Letteratura scientifica selezionata sul tema "Curved block structure"

Autore: Grafiati

Pubblicato: 14 dicembre 2024

Ultima modifica: 19 luglio 2025

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Articoli di riviste sul tema "Curved block structure"

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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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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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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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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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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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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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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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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Più fonti

Tesi sul tema "Curved block structure"

Roche, Claire. "Hexahedral curved block-structured mesh generation for atmospheric re-entry." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASG053.

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Le Commissariat à l'Énergie Atomique et aux Énergies Alternatives (CEA) s'intéresse à la simulation d'écoulements fluides en régime supersonique et hypersonique dans le cadre de la rentrée atmosphérique. Pour ce faire, un code de simulation numérique dédié y est développé. Pour répondre à des contraintes fortes, ce code ne prend en entrée que des maillages hexaédriques structurés par blocs. Ce type de maillage est compliqué à générer, c'est le plus souvent réalisé à la main via l'utilisation de logiciels interactifs dédiés. Pour des géométries industrielles complexes, la génération d'un mailla

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Riedel, Gårding Elias. "Quantum structure of holographic black holes." Thesis, KTH, Fysik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-284694.

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We study a free quantum scalar field in the BTZ spacetime as a model of the AdS/CFT correspondence for black holes, and show the essential steps in computing Bogolyubov coefficients between modes on either side of the wormhole. As background, we review the BTZ geometry in standard, Kruskal and Poincaré coordinates, holographic renormalisation of the dual field theory and canonical quantisation in curved spacetime.<br>Vi studerar ett fritt skalärt kvantfält i BTZ-rumtiden som en modell av AdS/CFT-dualiteten för svarta hål och visar huvudstegen i beräkningen av Bogolyubov-koefficienter mellan mo

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Constantin, Robert, and Denis Gerzic. "An Evaluation of Swedish Municipal Borrowing via Nikkei-linked Loans." Thesis, Linköpings universitet, Produktionsekonomi, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-153259.

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In this master thesis, we compare three different types of funding alternatives from a Swedish municipality's point of view, with the main focus on analysing a Nikkei-linked loan. We do this by analysing the resulting interest rate and the expected exposures, taking collateral into consideration. We conclude, with certainty, that there are many alternatives for funding and that they each need to be analysed and compared on many levels to be able to make a correct decision as to which ones to choose. An important part of this is to consider the implications of the newest regulations and risk ex

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Deng, Jie. "Vibroacoustic modeling of acoustic blackhole applications in flat, curved andcomplex mechanical structures." Doctoral thesis, Universitat Ramon Llull, 2020. http://hdl.handle.net/10803/670666.

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Els forats negres acústics en mecànica (coneguts per les sigles ABHs, de l’anglès Acoustic Black Holes) solen estar formats per osques en bigues i plaques, el gruix de les quals decau segons una llei potencial. L’efecte de l’ABH és el d’alentir les velocitats de fase i de grup de les ones de flexió incidents de tal manera que, en teoria, faria falta un temps infinit perquè les ones arribessin al centre de l’ABH, si el gruix d’aquest últim fos exactament zero. Tanmateix, a la pràctica això no és possible tot i que es pot aconseguir una forta dissipació col·locant una capa de material esmorteïdo

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Gong, Yun. "Structure-property relationships of dyes as applied to dye-sensitized solar cells." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/275007.

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This work investigates the correlation of structural and photovoltaic properties of dyes used in dye-sensitized solar cells. Experimental methods, including ultraviolet-visible spectroscopy, fluorescence spectroscopy, cyclic voltammetry and electrochemical impedance spectroscopy are employed to study optical and electrochemical properties of dye molecules. Computational methods, including density functional theory and time-dependent density functional theory, are used to validate and predict the optical and electronic properties of dye molecules, in their isolated state and once embedded into

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Ivan, Lucian. "Development of High-order CENO Finite-volume Schemes with Block-based Adaptive Mesh Refinement (AMR)." Thesis, 2011. http://hdl.handle.net/1807/29759.

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A high-order central essentially non-oscillatory (CENO) finite-volume scheme in combination with a block-based adaptive mesh refinement (AMR) algorithm is proposed for solution of hyperbolic and elliptic systems of conservation laws on body- fitted multi-block mesh. The spatial discretization of the hyperbolic (inviscid) terms is based on a hybrid solution reconstruction procedure that combines an unlimited high-order k-exact least-squares reconstruction technique following from a fixed central stencil with a monotonicity preserving limited piecewise linear reconstruction algorithm. The limit

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Libri sul tema "Curved block structure"

Deschler Canossi, Lesly, and Zoraida Lopez-Diago, eds. Black Matrilineage, Photography, and Representation. Leuven University Press, 2022. http://dx.doi.org/10.11116/9789461664631.

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Black Matrilineage, Photography, and Representation questions how the Black female body, specifically the Black maternal body, navigates interlocking structures that place a false narrative on her body and that of her maternal ancestors. Drawing on a wide range of scholarly inquiry and contemporary art, this book addresses these misconceptions and fills in the gaps that exist in the photographic representation of Black motherhood, mothering, and mutual care within Black communities. The essays and interviews, paired with a curated selection of images, address the complicated relationship betwe

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Flyvbjerg, Bent. Introduction. Edited by Bent Flyvbjerg. Oxford University Press, 2017. http://dx.doi.org/10.1093/oxfordhb/9780198732242.013.1.

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Megaprojects are large and are constantly growing ever larger, and more and more are being built in what has been called the biggest investment boom in history. This chapter serves as an introduction to megaprojects in which they are defined and in which the size of global megaprojects business is estimated. Drivers of the megaproject boom are identified, including monumentalism and the technological sublime; ten things you must know about megaprojects are detailed, from their tendency to suffer from uniqueness bias to their overexposure to black-swan events; and the “iron law of megaprojects”

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Capitoli di libri sul tema "Curved block structure"

Liang, Yuli, and Deliang Dai. "On Explicit Estimation of the Growth Curve Model with a Block Circular Covariance Structure." In Recent Developments in Multivariate and Random Matrix Analysis. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-56773-6_15.

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Xu, Yong, Yusen Qu, Ben Ma, et al. "Study on Mortar Rebound Method for Masonry Structure Blocks of Concrete Products." In Advances in Transdisciplinary Engineering. IOS Press, 2021. http://dx.doi.org/10.3233/atde210302.

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The relevant provisions of the mortar rebound method in the national code GB/T50315 “Technical Standards for site testing of masonry engineering” is only focus on mortar rebound method of sinter bricks, but whether the rebound curve of sintered brick mortar can be used for non-sintered brick mortar is uncertain. Therefore, the rebound curve of non-sintered brick mortar needs to be further studied. The mortar rebound method of sintered bricks is used as a model for the research process for mortar rebound method of other blocks, and the mortar of three widely used blocks of concrete products in masonry structures is selected as the research object. In the end, the mortar rebound curves for mortars of three widely used blocks are obtained through relevant tests, the results showed that the mortar rebound curves of sintered brick and non-sintered brick are completely different, thus broadening the application area of the mortar rebound method.

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Nagarajan, Harikumar, B. Tamilarasan, and Thanjaivadivel M. "Building Blocks." In Advances in Systems Analysis, Software Engineering, and High Performance Computing. IGI Global, 2024. http://dx.doi.org/10.4018/979-8-3693-3964-0.ch002.

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This work specifically examines the analysis of building blocks structures that experience finite displacements. The analysis was conducted with incremental sequential techniques. The Newton-Raphson iteration approach is used to load structural stages that have the ability to either soften or harden. A modified Newton-Raphson iteration technique is employed for loading stages in which the determinant of the global stiffness matrix is near 0 or negative, as observed in the snap-through scenario. The advanced computer language Fortran is used for structural analysis. To ensure the program's integrity, SAP (structural analysis program) is used for verification. The software is then used in several structural systems case studies. To accomplish this, the authors compare the axial stiffness of panels and jack elements as well as the height-to-span ratios of various structures. The structural responses were modelled using stiffening, snap-through, and softening load-displacement curves.

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Fang, Jian, Wenwen Zheng, and Xiaoyan Lei. "Experimental Study on Characteristics of Short Wave Irregularity in Urban Rail Transit." In Advances in Transdisciplinary Engineering. IOS Press, 2020. http://dx.doi.org/10.3233/atde200223.

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Based on the measured irregularity data of Shanghai rail transit 11# line, firstly from the angle of time domain the amplitude stability and amplitude distribution characteristics of the rail surface short wave irregularity whose wavelengths are in the range of 0.01 ∼ 1 m are analyzed. Secondly from the point of view of frequency domain by using the maximum entropy spectrum method the short wave power spectral density is estimated. Then the power spectral density curves are compared with the short spectrum of Wang Lan and Sato and the different track structure effects on the states of the rail surface irregularities are also analyzed. The research show that the amplitude distribution of track surface short wave irregularity is close to the normal distribution. And the maximum amplitudes of some sections in Jiading Xincheng – Malu and Nanxiang – Taopu saemaul undong exceed 2.0mm. In the section of Liziyuan-Shanghai West Railway Station, the power spectral density curves of track structure with the supporting block, DTIII-2 type fasteners and with the conventional integral track bed are also similar to that of Sato spectrum. And it is obviously superior to that of other track structures in this section.

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Scacco, J., G. Milani, and P. B. Lourenço. "A simple homogenization approach for masonry structures: A discrete approach extension from walls to curved structures." In Brick and Block Masonry - From Historical to Sustainable Masonry. CRC Press, 2020. http://dx.doi.org/10.1201/9781003098508-125.

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Moatlhodi Lerato J. and Okonta Felix N. "Effect of wetting and air curing durations on strength of stabilized sands." In Construction Materials and Structures. IOS Press, 2014. https://doi.org/10.3233/978-1-61499-466-4-683.

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Low cost houses in most developing countries are constructed from sandcrete blocks manufactured from sand-cement mortar. In South Africa, failure of many of these blocks has been experienced leading to collapse of the structures. Lack of sufficient compressive strength in the manufactured blocks was attributed as the main cause of the failures. The unconfined compressive strength (UCS) of sandcrete blocks can however be improved by curing the blocks under different conditions. Therefore the objective of this study was to evaluate the effect of different wetting and air drying durations would have on the strength and the stiffness of the cubes produced. Weakly cemented sand cubes, with different cement contents and cement-fly ash binder ratios compacted at the optimum moisture content, were prepared. The 28 days UCS was determined, modulus of elasticity and moisture contents of sample specimen was also determined. The results showed that curing cubes under water for 7 days and then air curing for 21 days yield maximum UCS and modulus of elasticity for sands cemented by plain Portland cement, and that 3 days under water curing produced maximum results for sands stabilized by cement-fly ash binder. It was however found that under water for 28 days results in minimum strength. Therefore the longer the cubes are cured under water minimum strengths were achieved.

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"Self-Assembly and Biomimetics." In Nanoscopic Materials: Size-Dependent Phenomena and Growth Principles, 2nd ed. The Royal Society of Chemistry, 2014. http://dx.doi.org/10.1039/bk9781849739078-00296.

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Self-assembly is a process in which structural motives provide specific interaction for directed aggregation of the modular building blocks under equilibrium conditions. Interactions among the building blocks but also between building blocks and solvent play a role. This allows the formation of oriented unimolecular layers and bilayers, such as soap films or biological cell membranes. Depending on the shape of the units, oriented packing may lead to curvature. The interface of the layer to the solvent is associated with a small interfacial energy, and curved surfaces separate regimes of different pressure. In isotropic systems this leads to structures of constant curvature. Nature makes extensive use of these construction principles, and chemists can take advantage of them in biomimetic synthesis in the laboratory. The building motives are often elongated or polar organic molecules such as surfactants, but in liquid crystals the mesogenes can also be disc-shaped. The resulting soft matter structures can be used as moulds for the synthesis of quite artistic architectures from hard ceramics at or near room temperature via the sol–gel process. Alternatively, three-dimensional structures can be designed and synthesised from modules with specific coupling elements. Metal–organic frameworks are examples of such structures which after removal of the solvent are porous and may be stable, suitable for gas adsorption or separation, or catalysis.

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Deng, Jie. "Low-frequency bandgaps by topological acoustic black holes." In Phonons - Recent Advances, New Perspectives and Applications [Working Title]. IntechOpen, 2024. http://dx.doi.org/10.5772/intechopen.1005765.

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Nowadays, acoustic black holes (ABHs) are very popular for producing efficient vibration reduction at high frequencies in combination with some damping mechanisms. However, its low-frequency performance is hard to improve since the ABH effect principally occurs beyond its cut-on frequency. Fortunately, periodic ABH configuration offers some bandgaps below that frequency for wave attenuation. In this chapter, a topological ABH structure is suggested to produce a new bandgap at very low frequencies, by taking a supercell and decreasing the ABH distance. The wave and Rayleigh-Ritz method (WRRM) is adopted to compute the complex dispersion curves. Examinations of the dispersion curves and transmissibilities confirm the efficiency of the low-frequency vibration reduction capability of the proposed topological ABHs.

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Deng, Jie, and Nansha Gao. "Periodic Acoustic Black Holes to Mitigate Sound Radiation from Cylindrical Structures." In Acoustic Emission - New Perspectives and Applications. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.101959.

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Acoustic black holes (ABHs) achieved by progressively diminishing structural thickness have been proved a very efficient approach for wideband vibration reduction, sound suppression, energy harvesting, and wave manipulation. In this chapter, the focus is placed on mitigating the sound emitted from cylindrical shells with embedded ABHs. In the applications of aeronautics, astronautics, and underwater vehicles, cylindrical shells are very common yet the vibroacoustic problems in such structures are very challenging. Even the researches on ABHs for straight beams and flat plates are boosting in recent years, the ABH effect is unclear for curved structures thus it deserves further investigations to push forward their applications. Since cylindrical shells are usually long in, for example, airplanes and rockets, periodic ABHs are designed to alleviate the acoustic emission from them. The Gaussian expansion method (GEM) is employed to recover the vibration field on the cylinder and, based on that, the sound radiation model is developed to determine the emitted sound power level (SWL). The band gaps (BGs) are shown for infinite periodic ABH shells, followed by the vibroacoustic level for a finite periodic shell. Particularly, axial stiffeners are introduced and the influences of their quantity and width are carried out.

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Maneli A., Kupolati W.K., Ndambuki J.M., and Abiola O.S. "Influence of curing time and compaction on black cotton soil stabilized with fly ash, ground-granulated blast furnace slag and lime." In Construction Materials and Structures. IOS Press, 2014. https://doi.org/10.3233/978-1-61499-466-4-575.

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The influence of curing time and compaction efforts on black cotton soil stabilized with optimum percentages of two industrial wastes activated with lime were evaluated in this paper. Fly ash (FA), ground granulated blast furnace slag (GGBFS) and lime at 12%, 8% and 1-9% respectively were used to stabilize black cotton soil in accordance to South Africa standards. Atterberg's limit, compaction and California bearing ratio (CBR) tests were conducted on the specimens. All the mixtures were compacted at optimum moisture content to different degrees of compaction and cured for 7, 28, 60 and 90 days before testing. The result showed that stabilized soil with 12% FA, 8% GGBFS and 6% lime improved the soil to be used as subgrade material. Both maximum dry density and optimum density increases as lime increased up to 6% and then decreased. It was observed that for all the curing days, there is an increase in CBR values as the compaction increased. The 60thday of curing at 100% modified AASHTO compaction effort produced the highest CBR value while the lowest CBR was recorded at 28 days at 90% compaction.

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Atti di convegni sul tema "Curved block structure"

Özçamur, Uğurcan, and Sadun Tanışer. "Performance of 8 Base-Isolated Hospitals During 06.02.2023 Earthquakes in Kahramanmaraş, Türkiye." In IABSE Congress, San José 2024: Beyond Structural Engineering in a Changing World. International Association for Bridge and Structural Engineering (IABSE), 2024. https://doi.org/10.2749/sanjose.2024.0507.

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<p>On 06.02.2023 Pazarcik and Elbistan provinces of Kahramanmaras city in Turkey was hit by 2 massive earthquakes. In the close proximity of these events, there are 12 base-isolated hospitals, 8 of which have been designed and constructed with TDP double sliding surface curved surface sliders. 4 of the hospitals were under construction at various construction stage; while, other 4 was operational on 06.02.2023. Two separate site observations were made between 10.02.2023 and 19.02.2023 in all 8 hospitals and visual evaluations were made. During the visual observations in the hospitals bot

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Zhang, Xuhui, Xun Wu, and Shanguo Jiang. "Study on Mechanical Properties of a Negative Poisson's Ratio Structural Bridge Block." In IABSE Congress, New Delhi 2023: Engineering for Sustainable Development. International Association for Bridge and Structural Engineering (IABSE), 2023. http://dx.doi.org/10.2749/newdelhi.2023.0508.

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<p>This paper is based on the design concept of the block is not damaged under small earthquakes and can be used sustainably and in the medium earthquake does not fall, convenient structure replacement and it can be destroyed during a large earthquake, sacrificing itself to protect the main beam. Based on the characteristics of graded energy dissipation and the advantages of negative Poisson's ratio compared with traditional structures in energy absorption and impact resistance, an anti-seismic energy dissipation bridge block was designed. The mechanical properties of the block were stud

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Zhang, Fei, and Jianxun Ma. "Experimental Study on Hybrid Masonry Structure with RC Frame under Lateral Reversed Cyclic Loading." In IABSE Conference, Kuala Lumpur 2018: Engineering the Developing World. International Association for Bridge and Structural Engineering (IABSE), 2018. http://dx.doi.org/10.2749/kualalumpur.2018.0142.

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<p>As a new type of structural system, hybrid masonry (HM) structure with reinforced concrete (RC) frame is constructed of reinforced block masonry wall and reinforced concrete frame. This structural system combines the advantages of reinforced concrete frame structure and reinforced concrete block masonry structure, also overcomes some limitations of them. In order to study the seismic performance of the structural system, the lateral reversed cyclic loading experiment on the HM structure with RC frame was conducted. In the experiment, two specimens that were constructed with different

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Karavelić-Hadžimejlić, Amina, and Senad Medić. "Vibrations tests of a Bailey-type suspension bridge over the Jablanica lake." In 8th International Conference on Road and Rail Infrastructure. University of Zagreb Faculty of Civil Engineering, 2024. http://dx.doi.org/10.5592/co/cetra.2024.1722.

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This paper presents results of vibration tests conducted on a recently reconstructed suspension bridge in Ostrožac, Bosnia and Herzegovina. The Ostrožac bridge spans 200 m over the Jablanica Lake and represents a case of exceptional engineering. However, it is also a typical example of ageing infrastructure characterized by a lack of adequate maintenance and severe degradation by corrosion. The main girders are a complex steel portable Bailey-type trusses suspended by Ø30 mm steel hangers and 6Ø52 mm primary load-bearing cables. The curved cables support the road pass over 18 m high reinforced

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Zeng, Xiangyin, Jiangqi He, and Baoshu Xu. "Accelerated Convergence for Lumped-Elements Based on-Package RF Passives Design by Using Curve Fitted Formula." In ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems collocated with the ASME 2005 Heat Transfer Summer Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/ipack2005-73308.

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Integrating passive components on package is getting more and more attractive. To speed up the lumped-elements-based RF functional blocks, like filters, matching networks and so on, fast synthesis of these lumped elements is necessary. Traditional synthesis method like try-error-try again is not only time consuming but also hard to find an optimal one. This is especially true for spiral inductor design due to many tunable parameters. Design based on library has also some disadvantages, such as lack of information of manufacture tolerances’ impact. This paper describes an optimal synthesis meth

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Schmitz, Anne. "Compression Energy Stored in an Additively Manufactured Mesostructure." In ASME 2022 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/imece2022-88493.

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Abstract One facet of sustainable manufacturing is minimizing material usage and waste. This is done by creating latticelike infills for components, i.e. mesostructures. The goal of this study was to quantify the compression energy absorbed by a stereolithographic (SLA) manufactured mesostructure. Fifteen specimens were printed using a Form 2 SLA printer from Formlab. After printing, the specimens were washed in isopropyl alcohol to remove any uncured resin. The specimens were printed as 80 × 80 × 20 mm blocks for compression testing. The structure of the block was a novel, open-source mesostr

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Wang, Ruiqin, and Xin Yan. "Background-Grid Based Mapping Approach to Film Cooling Meshing: Part I — Strategies and Test Cases." In ASME Turbo Expo 2020: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/gt2020-15768.

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Abstract Film cooling technique is commonly adopted in modern gas turbine engines to protect high-temperature components from erosion and damage caused by thermal stress. To improve film cooling effectiveness, many efficient prediction tools have been developed and have shown promising results, which are helpful for turbine aero-thermal design. For film cooling, evidence has shown that it is strongly affected by the momentum and heat transport in the boundary layer when hot gas and coolant are mixed downstream of the ejection. From the view of resolution accuracy in the boundary layer, structu

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Davlatov, Elyor, and Judit Sági. "The Role of New Keynesian Semi-structural Macroeconomic Forecasting Model in Realisation of Sustainable Development Goals in Uzbekistan." In 7th FEB International Scientific Conference. University of Maribor, University Press, 2023. http://dx.doi.org/10.18690/um.epf.3.2023.7.

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New reforms have been adopted in banking system of Uzbekistan since 2017 as monetary policy framework directed from monetary targeting to inflation targeting (IT). Liberalization of the national currency, reaching 5% inflation target on medium-term and operational independence of the Central Bank of Uzbekistan (CBU) have started progress of the reforms. The CBU has set policy rate as the primary tool of monetary policy in the context of inflation targeting regime. According to the experience of countries that implemented inflation targeting regime successfully, it is recommended to use the New

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Mokhtar, Jawad D., and James H. Oliver. "Parametric Volume Models for Interactive Three-Dimensional Grid Generation." In ASME 1994 Design Technical Conferences collocated with the ASME 1994 International Computers in Engineering Conference and Exhibition and the ASME 1994 8th Annual Database Symposium. American Society of Mechanical Engineers, 1994. http://dx.doi.org/10.1115/detc1994-0086.

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Abstract A method based on non-uniform rational B-spline (NURBS) curve, surface, and solid technology is presented for interactive grid generation of three-dimensional flow fields encountered in turbomachinery applications. The method allows construction of several types of multi-block grids including H-, O-, and C-grids for two-dimensional grids, and strict H-grids for three-dimensional grid generation. Automated two-dimensional block construction is facilitated via a traversal method that searches four-sided regions in the initial block structure. A NURBS surface is then constructed on each

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Tibbits, Patrick A. "Effect of Pillow Block Deformation on Ball Bearing Load Distribution." In ASME 2004 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/detc2004-57729.

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Support structure deflection distorts bearing rings, redistributes loads over bearing balls, and affects bearing life. In this study, solid finite elements modeled a shaft, bearing inner ring, outer ring, and pillow block. A nonlinear spring element represented each of the bearing balls. The force-versus-deflection curve of the spring element modeled the variable stiffness of the ball/raceway Hertzian contact. The curve also incorporated the diametrical clearance of the bearing to determine if each ball contacted the raceways. Further modification of the curve compensated for the compliance of

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Rapporti di organizzazioni sul tema "Curved block structure"

Hauzenberger, Niko, Florian Huber, Gary Koop, and James Mitchell. Bayesian modeling of time-varying parameters using regression trees. Federal Reserve Bank of Cleveland, 2023. http://dx.doi.org/10.26509/frbc-wp-202305.

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In light of widespread evidence of parameter instability in macroeconomic models, many time-varying parameter (TVP) models have been proposed. This paper proposes a nonparametric TVP-VAR model using Bayesian additive regression trees (BART). The novelty of this model stems from the fact that the law of motion driving the parameters is treated nonparametrically. This leads to great flexibility in the nature and extent of parameter change, both in the conditional mean and in the conditional variance. In contrast to other nonparametric and machine learning methods that are black box, inference us

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Livensperger, Carolyn. Vegetation and Soil Trends, Black Canyon of the Gunnison National Park and Curecanti National Recreation Area, 2011–2022. National Park Service, 2025. https://doi.org/10.36967/2309325.

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In 2011, the Northern Colorado Plateau Network (NCPN) began long-term monitoring of vegetation and soils in upland communities at Black Canyon of the Gunnison National Park (BLCA) and Curecanti National Recreation Area (CURE). Managers wanted to understand conditions in sagebrush shrublands, aspen forests, pinyon-juniper woodlands, and Gambel oak shrublands. These four vegetation types are associated with a range of management concerns. These include suitable habitat conditions for the threatened Gunnison sage-grouse, planning for livestock grazing management, responses to disturbances (e.g.,

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Ford, Adam T., Marcel Huijser, and Anthony P. Clevenger. Long-term responses of an ecological community to highway mitigation measures. Nevada Department of Transportation, 2022. http://dx.doi.org/10.15788/ndot2022.06.

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In road mitigation systems characterized by multiple wildlife crossing structures (CS) and multiple-focal species, these species-specific design criteria are important to meeting management goals. CS types and locations are fixed in place and cannot be manipulated experimentally; long term studies may offer the best chance to inform evidence-based designs for new CS projects in the future. Long-term data from Banff National Park are uniquely posed to answer these critical questions. More recently, highway mitigation along US93 in Montana provides an additional case study with which to understa

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