Log in

Relevant bibliographies by topics / Vertical compression

Contents

Journal articles
Dissertations / Theses
Books
Book chapters
Conference papers
Reports

Academic literature on the topic 'Vertical compression'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Vertical compression.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Vertical compression"

1

Yuan, Yong, Jianhui Luo, and Haitao Yu. "Experimental Study on Vertical Shear Behaviors of an Immersion Joint with Steel Shear Keys." Applied Sciences 9, no. 23 (2019): 5056. http://dx.doi.org/10.3390/app9235056.

Full text

Abstract:

The vertical shear behaviors of an immersion joint with steel shear keys subjected to multidirectional loads are investigated in this paper. An experiment of an immersion joint model is carried out. Two kinds of compression–shear tests of the joint are considered in this experiment. The first kind of compression–shear test applies a specific vertical shear load and five different levels of longitudinal compressive loads on the joint. An additional compression–vertical shear destruction test is also conducted under the minimum longitudinal compressive load, wherein the vertical shear load is in

APA, Harvard, Vancouver, ISO, and other styles

2

Yang, Lianzhi, Tong Niu, Fanmin He, and Zhiyong Song. "Study on the Compressive and Tensile Properties of Gneiss Outcrop of Bozhong 196 Gas Field in China." Energies 16, no. 9 (2023): 3919. http://dx.doi.org/10.3390/en16093919.

Full text

Abstract:

In this paper, based on the gneiss outcrop of Bozhong 196 gas field in China, uniaxial compression and Brazil splitting tests were conducted by using cores of different orientations. The following compression properties were studied: the elastic compression modulus, Poisson’s ratio and compressive strength of the gneiss outcrop. The following tensile properties were studied: the tensile modulus, the tensile strength and peak energy rate of gneiss outcrop. The results demonstrate the following: (1) The elastic compression modulus, compressive strength, tensile strength and peak energy rate of g

APA, Harvard, Vancouver, ISO, and other styles

3

Ahmed Ramadan Ahmed. "An Experimental Study of High-Damping Rubber Bearings (HDRB) and Their Implications for the Seismic Performance of Cable-Stayed Bridges." Power System Technology 48, no. 1 (2024): 1609–24. http://dx.doi.org/10.52783/pst.431.

Full text

Abstract:

This article investigates the efficiency of high damping rubber bearings (HDRB), which are made of special rubber with excellent damping attributes and layers of steel. HDRB isolators have excellent flexibility, vibration reduction ability, and high restoring ability for controlling the seismic response of long-span cable-stayed bridge systems under near-fault ground motions. The seismic isolation of cable-stayed bridges is achieved using high-damping rubber bearings (HDRB). High-damping rubber bearings have excellent seismic effects during earthquakes. The elastic stiffness of the bearing dep

APA, Harvard, Vancouver, ISO, and other styles

4

Wang, Dengfeng, Yongfu Yu, Licheng Pan, and Haijin Dai. "Study of Load Bearing Capacity of Profiled Steel Sheet Wall Subjected to Combined Bending and Vertical Compression in Electrostatic Precipitator." Open Mechanical Engineering Journal 8, no. 1 (2014): 326–31. http://dx.doi.org/10.2174/1874155x01408010326.

Full text

Abstract:

For some electrostatic precipitators, profiled steel sheets are used as casing wall which is subjected to both bending and vertical compression. By nonlinear finite element method, the influences of structural parameters on load bearing capacity of profiled steel sheet wall were investigated. For the loading path, the uniform transversal pressure was applied firstly, and then the vertical compression was applied until the wall failed. The results indicate that the vertical compression resistance of profiled sheet decreases with the transversal load or the increasing sheet span. For certain she

APA, Harvard, Vancouver, ISO, and other styles

5

Hyun, Seung Hyun, and Hyeonseong Jin. "Effect of Knee Compression on Kinetic Variables During Vertical Jumps." Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences. 72, no. 6 (2018): 327–33. http://dx.doi.org/10.2478/prolas-2018-0045.

Full text

Abstract:

Abstract The purpose of this study was to determine how knee compression affected kinetic variables during vertical jumps. Ten healthy males, age 20s, performed a single maximum vertical jump and a ten-consecutive vertical jump trial without knee compression (control condition) and with knee compression. The collected data of ground reaction force were used to analyse the vertical jump height (VJH), peak active force (PAF), decay rate (DR), peak passive force (PPF), loading rate (LR), and the coefficient of variation (CV). During a maximum vertical jump, knee compression increased the magnitud

APA, Harvard, Vancouver, ISO, and other styles

6

Cai, Naijia, Qiaoyu Meng, Keqiang Zhang, Luchao Geng, Rujie He, and Zhaoliang Qu. "Investigation on Flaw Evolution of Additively Manufactured Al2O3 Ceramic by In Situ X-ray Computed Tomography." Materials 15, no. 7 (2022): 2547. http://dx.doi.org/10.3390/ma15072547.

Full text

Abstract:

The additive manufacturing process may create flaws inside ceramic materials. The flaws have a significant influence on the macroscopic mechanical behavior of ceramic materials. In order to reveal the influence of flaws on the mechanical behavior of additively manufactured ceramic, flaw evolution under mechanical loads was studied by in situ X-ray computed tomography (XCT) in this work. In situ compression XCT tests were conducted on stereolithographic additively manufactured Al2O3 ceramic. The three-dimensional full-field morphologies at different compressive loads were obtained. The evolutio

APA, Harvard, Vancouver, ISO, and other styles

7

Shin, So-Yeon. "Relationship between Hand Force and Chest Compression in Manikin Study." Fire Science and Engineering 34, no. 5 (2020): 93–97. http://dx.doi.org/10.7731/kifse.5f67ca03.

Full text

Abstract:

A C-shaped bend is prevalent in long, thin fingers when administering the two-finger compression technique in infant cardiac arrest, making vertical chest compressions difficult. This study was a mannequin experiment, which investigated the effect of grip and back muscle strengths on the outcome of infant chest compressions. Twenty 4th year paramedicine students who had completed 15 weeks of cardiopulmonary resuscitation (CPR) training were recruited as subjects in this study. The results demonstrated greater grip strength in men than in women. Additionally, grip strength, height, and sex were

APA, Harvard, Vancouver, ISO, and other styles

8

Kayode, Adewole Kazeem, and Leopold Mbereyaho. "Finite Element Analysis of Double-Bolt Shear-Out Fracture Failure." Civil and Environmental Engineering 16, no. 2 (2020): 219–28. http://dx.doi.org/10.2478/cee-2020-0021.

Full text

Abstract:

AbstractThis paper presents the finite element (FE) analysis of double-bolt shear-out (DBSO) fracture failure. The DBSO fracture shape consists of two oppositely: inclined outer main shear fractures, inner main shear fracture, outer shear lips, and curved inner curved fractures. The DBSO begins with two outer main shear fracture initiations under shear, vertical compressive bending, and sideways bending deformations/stresses followed by the two inner main shear fracture initiations under shear and vertical compressive bending deformations. The outer shear lips occurred under vertical compressi

APA, Harvard, Vancouver, ISO, and other styles

9

Skuodis, Šarunas, Arnoldas Norkus, Liudas Tumonis, Jonas Amšiejus, and Ceslovas Aksamitauskas. "EXPERIMENTAL AND NUMERICAL INVESTIGATION OF SAND COMPRESSION PECULIARITIES." Journal of Civil Engineering and Management 19, no. 1 (2013): 78–85. http://dx.doi.org/10.3846/13923730.2013.756164.

Full text

Abstract:

Investigation of the compression properties of Klaipėda sand by oedometric testing and numerical modeling is presented. Klaipėda sand is characteristic of the Baltic seashore region sand. Experimental investigation was performed with fraction corresponding to diameter variation bounds of 0.6 and 0.425 mm. Compression test was realized with initial maximal void ratio (e 0 = 0.800) of sand. Employed vertical stress ramp value is 800.0 kPa/min, maximum loading σmax = 400.0 kPa. Applying loading within the range of 50.0 to 120.0, two vertical stress jumps have been identified. A rubber sample comp

APA, Harvard, Vancouver, ISO, and other styles

10

Berry, Chirag A., and Raj D. Rao. "Compressive Flexion and Vertical Compression Injuries of the Subaxial Cervical Spine." Seminars in Spine Surgery 25, no. 1 (2013): 36–44. http://dx.doi.org/10.1053/j.semss.2012.07.001.

Full text

APA, Harvard, Vancouver, ISO, and other styles

More sources

Dissertations / Theses on the topic "Vertical compression"

1

Sabry, Mohab. "Shaft resistance of a single vertical or batter pile in sand subjected to axial compression or uplift loading." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/MQ64056.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Song, Mengli. "Effectiveness of steel bars in reinforced masonry walls under concentric compression." Thesis, Queensland University of Technology, 2019. https://eprints.qut.edu.au/132724/1/Mengli_Song_Thesis.pdf.

Full text

Abstract:

This PhD thesis aims at developing an economical and safe reinforced masonry structural walling system suitable for usage in the heavily loaded lower stories of the multi-storeyed residential or commercial buildings. Through a systematic experimental investigation of more than 50 walls and a finite element modelling incorporating material and geometric nonlinearities, design formulae have been developed and incorporated in the Australian Masonry Design Standard AS3700 (2018). With this significant contribution, the outcomes of this PhD thesis can address some of the recent problems of huge soc

APA, Harvard, Vancouver, ISO, and other styles

3

Fourcade, Eric. "Modélisation de la résistance à la compression verticale d'un manchon en carton ondulé." Bordeaux 1, 1995. http://www.theses.fr/1995BOR10568.

Full text

Abstract:

Cette these propose un calcul par la methode des elements finis (abaqus), de la resistance a la compression verticale (rcv) d'un manchon caisse sans rabats en carton ondule double-face. Nous utilisons un modele de plaque sandwich pour decrire le comportement elastique du double-face. La matrice des rigidites du modele est complete ; nous calculons les rigidites de membrane, de flexion-torsion et de cisaillement transverse a partir des caracteristiques des papiers composant le double-face. Pour calculer la rcv, nous fragmentons le chargement (affaissement) en increments. A chaque increment, nou

APA, Harvard, Vancouver, ISO, and other styles

4

Sahota, Mankinder Kaur. "The use of lead in infilled frame structures to reduce vertical load transfer." Thesis, University of Sussex, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.321489.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Zaki, Oussama. "Contribution à l'étude et la modélisation de l'influence des phénomènes de transferts de masse sur le comportement mécanique de flacons en polypropylène." Phd thesis, Université Paris-Est, 2008. http://tel.archives-ouvertes.fr/tel-00351664.

Full text

Abstract:

Plusieurs types d'interactions existent entre un emballage (contenant) et le produit emballé (contenu). L'inertie d'un emballage est rarement totale, ce qui peut engendrer par exemple une altération des propriétés du produit emballé. Ce contact contenant/contenu peut également influencer les propriétés thermomécaniques de l'emballage. L'objectif général du travail de cette thèse consiste à développer une méthodologie expérimentale rigoureuse et pertinente pour caractériser les phénomènes observés et ainsi modéliser le système matériau/produit. Cette démarche a pour but la mise au point d'un ou

APA, Harvard, Vancouver, ISO, and other styles

6

Nadri, Dariush. "Joint non-linear inversion of amplitudes and travel times in a vertical transversely isotropic medium using compressional and converted shear waves." Thesis, Curtin University, 2008. http://hdl.handle.net/20.500.11937/1810.

Full text

Abstract:

Massive shales and fractures are the main cause of seismic anisotropy in the upper-most part of the crust, caused either by sedimentary or tectonic processes. Neglecting the effect of seismic anisotropy in seismic processing algorithms may incorrectly image the seismic reflectors. This will also influence the quantitative amplitude analysis such as the acoustic or elastic impedance inversion and amplitude versus offsets analysis. Therefore it is important to obtain anisotropy parameters from seismic data. Conventional layer stripping inversion schemes and reflector based reflectivity inversion

APA, Harvard, Vancouver, ISO, and other styles

7

Nadri, Dariush. "Joint non-linear inversion of amplitudes and travel times in a vertical transversely isotropic medium using compressional and converted shear waves." Curtin University of Technology, Department of Exploration Geophysics, 2008. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=17631.

Full text

Abstract:

Massive shales and fractures are the main cause of seismic anisotropy in the upper-most part of the crust, caused either by sedimentary or tectonic processes. Neglecting the effect of seismic anisotropy in seismic processing algorithms may incorrectly image the seismic reflectors. This will also influence the quantitative amplitude analysis such as the acoustic or elastic impedance inversion and amplitude versus offsets analysis. Therefore it is important to obtain anisotropy parameters from seismic data. Conventional layer stripping inversion schemes and reflector based reflectivity inversion

APA, Harvard, Vancouver, ISO, and other styles

8

Ribeiro, Jacqueline A'vila. "Alvenaria estrutural de blocos de concreto celular autoclavado e blocos de concreto - influência da junta vertical na resistência à compressão de prismas." Universidade Federal de Minas Gerais, 2001. http://hdl.handle.net/1843/PASA-8ALJGZ.

Full text

Abstract:

The mechanical properties to the compression of the masonry are basic parameters used in design of structural masonry and they are generally evaluated from prism tests. This work describes the study of the mechanical behavior of autoclaved cellular concrete and concrete blocks prisms, without grout, and vertical joint, with filled vertical joint, and with non-filled vertical joint, subjected to the loading of the axial compression. Then it was performed experimental tests and statistical analysis of the results. It was employed on this work autoclaved cellular concrete blocks that were made an

APA, Harvard, Vancouver, ISO, and other styles

9

Pour, Shahid Saeed Abadi Parisa. "Mechanical behavior of carbon nanotube forests under compressive loading." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/47699.

Full text

Abstract:

Carbon nanotube (CNT) forests are an important class of nanomaterials with many potential applications due to their unique properties such as mechanical compliance, thermal and electrical conductance, etc. Their deformation and failure in compression loading is critical in any application involving contact because the deformation changes the nature of the contact and thus impacts the transfer of load, heat, and charge carriers across the interface. The micro- and nano-structure of the CNT forest can vary along their height and from sample to sample due to different growth parameters. The morph

APA, Harvard, Vancouver, ISO, and other styles

10

Lottin, Olivier. "Étude du fonctionnement des réacteurs d'une pompe à chaleur à compression-absorption : modélisation des mécanismes de changement d'état d'un fluide binaire zéotrope s'écoulant en film tombant sur une plaque plane verticale." Nancy 1, 1996. http://www.theses.fr/1996NAN10315.

Full text

Abstract:

Ce rapport est une étude de l'absorbeur et du désorbeur d'une pompe à chaleur à compression-absorption. Il s'agit de réacteurs à film tombant utilisant des géométries à plaques verticales. Deux types de modèles de transferts couplés de chaleur et de matière sont détaillés. Le premier est basé sur les équations locales utilisant les diffusivités massique et thermique ; il permet de déterminer des corrélations donnant les nombres de Nusselt et de Sherwood. Le second emploie les équations phénoménologiques et demande la connaissance de conductances de transferts. Les deux permettent de calculer l

APA, Harvard, Vancouver, ISO, and other styles

More sources

Books on the topic "Vertical compression"

1

Haan, Evert Jan Den. Vertical Compressions of Soils. Delft Univ Pr, 1994.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

2

Hollis, Murray. Practical Straw Bale Building. CSIRO Publishing, 2005. http://dx.doi.org/10.1071/9780643092143.

Full text

Abstract:

Building with straw bales is being embraced by amateurs and professionals for its versatility, comfort, environmental friendliness and high insulation. New methods should expand its growing worldwide popularity. In Practical Straw Bale Building, Murray Hollis uses simple, easy to understand language to describe the established techniques of straw bale construction and ways in which they can be improved. He also presents a new straw bale construction system that has substantial benefits over current methods. This system incorporates a new tensioning system that replaces the use of fence s

APA, Harvard, Vancouver, ISO, and other styles

3

Bodor, Marko, Sean Colio, and Christopher Bonzon. Hand and Wrist Injections: Ultrasound. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780199908004.003.0045.

Full text

Abstract:

Two basic ultrasound-guided approaches are used for procedures to diagnose and treat chronic pain in the upper extremity. The short-axis approach is best for injections of superficial, vertically oriented joints, whereas the long-axis approach is best for relatively deep injections and more open joints or whenever it is necessary for the needle to be seen at all times. Ultrasound can guide injections for nerve compressions. Carpal tunnel syndrome is the most common peripheral nerve entrapment syndrome. Ulnar tunnel syndrome occurs in the setting of space-occupying lesions. Ultrasonography can

APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Vertical compression"

1

Makino, Shintaro. "Double Vertical Compression Sutures." In Compression Sutures for Critical Hemorrhage During Cesarean Section. Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-32-9460-8_3.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Takeda, Jun. "Vertical Compression Sutures with Contrivances." In Compression Sutures for Critical Hemorrhage During Cesarean Section. Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-32-9460-8_4.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Titzer, Ben L., and Jens Palsberg. "Vertical Object Layout and Compression for Fixed Heaps." In Semantics and Algebraic Specification. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-04164-8_18.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Fang, Miaomiao, Yuqi Wang, Jiaxin Liu, and Fan Sun. "Research on Support Damage of Highway Bridge Based on Midas." In Lecture Notes in Civil Engineering. Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-1260-3_30.

Full text

Abstract:

AbstractDuring the operation of highway bridges, the bearing stiffness will decrease with the service life, and the mechanical properties will also change. In order to study the influence of stiffness damage on bearing. In this paper, a continuous beam bridge is selected for finite element model analysis, and the effects of stiffness damage on bearing force and bearing offset under the conditions of concrete shrinkage and creep and 30 °C temperature difference are comprehensively considered. The results show that the bearing stiffness damage has little influence on the vertical displacement, h

APA, Harvard, Vancouver, ISO, and other styles

5

Ci, Dongyue, and Chuanyao Gu. "Numerical Simulation of the Influence of Piling on the Surrounding Soil." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-2417-8_20.

Full text

Abstract:

AbstractIn pile driving construction, the soil around the pile will produce vibration and compaction effects to destroy the safety and stability of the surrounding pipelines and buildings. To study the deformation of surrounding soil during piling, this paper adopts ABAQUS finite element analysis software to drive piles at the penetration rates of 7.5, 5, 2, 1 and 0.2 cm/s, respectively, to study the variation law of soil stress and displacement. The results show that the stress distribution below the pile tip is hemispherical, with a range of 6 times the pile diameter, and there is stress con

APA, Harvard, Vancouver, ISO, and other styles

6

Wang, Yaojun, Bingbing Liu, and Qianqian Hao. "Mechanical Behaviors of Encased Concrete of Composite Bridges with Corrugated Steel Web." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-4090-1_2.

Full text

Abstract:

AbstractThe encased concrete in a composite bridge with corrugated steel web (CSW) is a critical structure to improve the stability of the web and relieve the stiffness difference between the composite girder and intermediate crossbeam. This study aims to investigate the effects of the encased concrete on the mechanical behaviors of composite girder bridges with CSWs. The finite element model of a rigid frame bridge is established, the calculation method of the shear force sharing ratio of the encased concrete is proposed, and the effect of the length and thickness of the encased concrete is a

APA, Harvard, Vancouver, ISO, and other styles

7

Song, Y. J., C. R. Lu, X. J. Li, L. A. Zhao, X. W. Ye, and T. Jin. "Convergence Deformation of Existing Shield Tunnel Induced by Adjacent Shield Tunnelling Construction." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-4355-1_36.

Full text

Abstract:

AbstractThe subway system has benefited the transportation in a lot of modern cities with advantages such as convenience, rapidity, large volume, etc. However, with the construction of more and more subway systems, the underground space is increasingly crowded. According to engineering practice, existing tunnel is inevitably distorted by adjacent tunneling construction, reducing stability and safety, especially when the distance between two tunnels is small. To explore the convergence deformation of existing tunnels, field monitoring and analysis are conducted on the convergence deformation of

APA, Harvard, Vancouver, ISO, and other styles

8

Zhang, Luyang, Jitao Yao, and Yuting Tong. "Seismic Behavior of Steel-Polypropylene Hybrid Fiber Reinforced Concrete Shear Wall." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-4090-1_39.

Full text

Abstract:

AbstractThis study investigated the loading mechanism of SPFRC shear walls by conducting low-cycle repeated loading tests on two steel-polypropylene hybrid fiber reinforced concrete (SPFRC) shear walls and one reinforced concrete (RC) shear wall. Furthermore, this study analyzed the impact of fiber content and axial compression ratio on the failure mode, shear carrying capacity, ductility, and energy dissipation capacity of the shear walls. The test results show that hybrid fibers effectively restrain the development of cracks in shear walls, and improve the shear carrying capacity, deformatio

APA, Harvard, Vancouver, ISO, and other styles

9

Deng, Xiujie. "SSMB Transverse-Longitudinal Coupling Dynamics." In Springer Theses. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-5800-9_3.

Full text

Abstract:

AbstractAfter dedicated efforts devoted to the longitudinal dynamics to realize an ultrasmall longitudinal emittance and ultrashort bunch length for coherent radiation generation, we need to make sure that the coupling arising from transverse dynamics does not degrade or even destroy the longitudinal fine structures. Such an argument is based on the observation that the transverse beam size in an SSMB ring can be orders of magnitude larger than the desired microbunch length. This is the basic motivation for us to investigate the transverse-longitudinal coupling (TLC) dynamics. In this chapter,

APA, Harvard, Vancouver, ISO, and other styles

10

Tan, Xiangye, Yangpeng Zhang, Zhipeng Chen, and Qinglin Guo. "Stress State of Asphalt Mortar Based on Meso-Scopic Finite Element Simulation and Verification." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-2532-2_18.

Full text

Abstract:

AbstractThe composition and structure of asphalt mixture have a significant impact on its mechanical performance, and the randomly distributed coarse aggregate impose a significant impact on the stress state of asphalt mortar. However, the traditional method can only evaluate the mechanical properties of asphalt mixture from macro scopic indexes, cannot show the stress state of asphalt mortar in details. Therefore, based on digital image processing technology, a meso-finite element model of asphalt mixture is established, and the stress state of asphalt mortar is analyzed by using finite eleme

APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Vertical compression"

1

Yousefpour, Ali, Pierre Beaulieu, Steven Roy, and Felix Bednar. "Compression Molding of Composite Tailboom Frames." In Vertical Flight Society 70th Annual Forum & Technology Display. The Vertical Flight Society, 2014. http://dx.doi.org/10.4050/f-0070-2014-9562.

Full text

Abstract:

Composite helicopter tailboom frames were manufactured by compression molding using a carbon fiber thermoset bulk molding compound. A mold was designed for compression molding and installed in a hydraulic press. The mold features two shear edges, guide pins and an integrated part ejection system. A material preforming method was developed to improve consistency in material distribution, which improved process robustness. A number of parts were produced and inspected for void content and dimensional stability. No significant porosity or voids were found in the samples examined. Part thickness u

APA, Harvard, Vancouver, ISO, and other styles

2

Brown, Avery, Ben Beck, Micah Shepherd, et al. "Circular Acoustic Black Holes Integrated into Carbon/Epoxy Stiffened Panels for Noise Control." In Vertical Flight Society 80th Annual Forum & Technology Display. The Vertical Flight Society, 2024. http://dx.doi.org/10.4050/f-0080-2024-1245.

Full text

Abstract:

Carbon fiber reinforced epoxy composite stiffened panels are increasingly being used for structural components in large transport rotorcraft. However, problems are arising with high levels of vibration and interior noise due to the increased stiffness-to-density ratio of composites. The current investigation explores the potential of reducing vibrations in carbon/epoxy stiffened panels with the integration of acoustic black holes (ABH), namely features that incorporate a power law thickness taper. The proposed approach involves designing a taper into the thickness of the blade stiffeners as we

APA, Harvard, Vancouver, ISO, and other styles

3

Mercier, Christian, and Alexandre Gierczynski. "HCE Kerosene Piston Engine Light Helicopter Demonstrator Results." In Vertical Flight Society 73rd Annual Forum & Technology Display. The Vertical Flight Society, 2017. http://dx.doi.org/10.4050/f-0073-2017-12143.

Full text

Abstract:

In the frame of GRC4, part of Cleansky's Green Rotorcraft Integrated Technology Demonstrator (ITD), Airbus Helicopters has led the development of a flying demonstrator based on the H120 serial helicopter and fitted with a designed from scratch reciprocating engine running on kerosene and named HCE for High-Compression Engine. On this research project Airbus Helicopters teamed with TEOS Powertrain Engineering, France, and AustroEngine GmbH, Austria, regrouped in the Consortium HIPE 440. Engine bench tests started in March 2013. Ground tests were completed in March 2015. With a Maiden Flight on

APA, Harvard, Vancouver, ISO, and other styles

4

Nikishkov, Gennadiy, Peter Matthews, Yuri Nikishkov, Guillaume Seon, and Andrew Makeev. "Fatigue Simulation Method based on the Calculation of the J-Integral in the Cohesive Zone Delamination Model." In Vertical Flight Society 80th Annual Forum & Technology Display. The Vertical Flight Society, 2024. http://dx.doi.org/10.4050/f-0080-2024-1372.

Full text

Abstract:

A state-of-the-art emerging progressive damage failure analysis tool CDMat has been successfully applied to multiple material systems on open-hole tension and compression, and double shear bearing laminate coupons under static and fatigue loading including simulation to ultimate failure. CDMat also successfully demonstrated component-level strength/fatigue analysis under the Air Force Composite Airframe Life Extension (CALE) and the Fail-Safe Technologies for Bonded and Unitized Composite Structures (FASTBUCs) Programs. Building on the success of CDMat an integrated software solution for certi

APA, Harvard, Vancouver, ISO, and other styles

5

Wojtuszewski, Radoslaw, Aleksander Banas, and Mateusz Oliwa. "Additive Manufacturing of Titanium Alloys." In Vertical Flight Society 74th Annual Forum & Technology Display. The Vertical Flight Society, 2018. http://dx.doi.org/10.4050/f-0074-2018-12819.

Full text

Abstract:

The most common additive manufacturing technologies are Electron Beam Melting and Selective Laser Sintering. It can be used with various materials including Titanium. Titanium alloys are also widely used in aircraft production. It is strong and stiff material however its processing using ordinary technology is generally complicated, time consuming and expensive. Oppositely for additive manufacturing, titanium is one of the most convenient to process. This opens new possibilities in aircraft production. This paper compares EBM and SLM technologies with the use of two titanium alloys (6-4 and 5-

APA, Harvard, Vancouver, ISO, and other styles

6

Wojtuszewski, Radoslaw, Aleksander Banas, and Mateusz Oliwa. "Additive Manufacturing of Titanium Alloys." In Vertical Flight Society 74th Annual Forum & Technology Display. The Vertical Flight Society, 2018. http://dx.doi.org/10.4050/f-0074-2018-12812.

Full text

Abstract:

The most common additive manufacturing technologies are Electron Beam Melting and Selective Laser Sintering. It can be used with various materials including Titanium. Titanium alloys are also widely used in aircraft production. It is strong and stiff material however its processing using ordinary technology is generally complicated, time consuming and expensive. Oppositely for additive manufacturing, titanium is one of the most convenient to process. This opens new possibilities in aircraft production. This paper compares EBM and SLM technologies with the use of two titanium alloys (6-4 and 5-

APA, Harvard, Vancouver, ISO, and other styles

7

LeBlanc, Dominic, Erin Quinlan, Steven Roy, et al. "Study of Processing Conditions on the Forming of Ribbed Features Using Randomly-Oriented Strands Thermoplastic Composites." In Vertical Flight Society 70th Annual Forum & Technology Display. The Vertical Flight Society, 2014. http://dx.doi.org/10.4050/f-0070-2014-9557.

Full text

Abstract:

Compression moulding of randomly-oriented strands composites offer the possibility to manufacture complex parts with fast processing cycle. In this paper, effects of pressure, strand size, temperature and material placement in the mould cavity on the quality of a T-shape part were studied experimentally. Low pressure results showed both strand size and temperature effects on the filling of a 25 mm rib deep cavity. Critical filling pressures for three strand sizes were obtained. A pressure of 10 bar was enough to fully consolidate parts with smaller strand (3.17 mm × 6.35 mm) at 400 °C. Parts p

APA, Harvard, Vancouver, ISO, and other styles

8

Ferrier, Bernard, Robert Ernst, Ajay Sehgal, and Saiah Kim. "Deck Motion Interface for MQ-8C Fire Scout Embarked Aviation." In Vertical Flight Society 72nd Annual Forum & Technology Display. The Vertical Flight Society, 2016. http://dx.doi.org/10.4050/f-0072-2016-11574.

Full text

Abstract:

This paper provides a discussion of the challenges associated with embarking the MQ-8C Fire Scout (converted Bell 407) system onboard ships, focusing on the launch and recovery (L&R) process and equipment. The baseline version of Fire Scout, MQ-8C, along with all its improved derivatives is required to undergo ship suitability assessments in the form of dynamic interface (DI) testing, also known as helicopter-ship qualification analysis, aboard ship. DI testing evaluates all aspects of shipboard helicopter compatibility such as adequacy, effectiveness and safety of shipboard aviation suppo

APA, Harvard, Vancouver, ISO, and other styles

9

Lua, Jim, Anisur Rahman, Dinh Pham, and Nam Phan. "A Progressive Damage Model for Fatigue Analysis of Woven Fabric Composites." In Vertical Flight Society 74th Annual Forum & Technology Display. The Vertical Flight Society, 2018. http://dx.doi.org/10.4050/f-0074-2018-12889.

Full text

Abstract:

An efficient two-step progressive damage model has been developed to predict the accumulated damage and fatigue life of woven fabric composite materials. A stress-based failure criterion coupled with a continuum damage approach is employed to predict the damage in fabric materials when loaded up to the desired stress level. Upon fatigue cyclic loading, fatigue damage initiation and propagation in the warp and weft tows, in the matrix constituent and their interfaces are evaluated with S-N based accumulation models characterizing the cycle-dependent strengths in the fiber tows and the matrix su

APA, Harvard, Vancouver, ISO, and other styles

10

Hellstrom, Ian, David Moorcroft, and William Carroll. "Effect of High-Rate Loading on Anthropomorphic Test Device Pelvises." In Vertical Flight Society 81st Annual Forum and Technology Display. The Vertical Flight Society, 2025. https://doi.org/10.4050/f-0081-2025-179.

Full text

Abstract:

As part of a larger project aimed at gaining a better understanding of factors that affect the quality of test results using anthropomorphic test devices (ATDs), the FAA tested the effects of dynamic loading of an ATD pelvis. The ATDs required in the aviation regulations were initially developed for the automotive crash environment, which does not include a vertical testing component. One of the two dynamic tests is a vertical impact, with the principal measurement being the compressive load in the lumbar spinal column, with a regulatory limit of 1500 lb. The lumbar load cell is mounted to the

APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Vertical compression"

1

Scott, Dylan, Stephanie Wood, Bradford Songer, et al. Development and characterization of ultra-high-performance concrete for the rehabilitation of navigation lock structures. Engineer Research and Development Center (U.S.), 2023. http://dx.doi.org/10.21079/11681/47684.

Full text

Abstract:

This report details the history of vertical lock wall repairs and the development and laboratory characterization of an ultra-high-performance concrete (UHPC) using locally sourced materials for improved durability of lock walls subjected to impact and abrasion from navigational vessels. This UHPC, referred to as Lock-Tuf, has been designed for use in a precast environment with ambient curing methods and serves as a material proof-of-concept for future lock wall rehabilitations. Mechanical properties such as unconfined compressive strength, flexural response, tensile capacity, impact resistanc

APA, Harvard, Vancouver, ISO, and other styles

2

EXPERIMENTAL STUDY ON SHEAR PERFORMANCE OF TWO-STORY COMPOSITE COLD-FORMED THIN-WALL STEEL EXTERIOR WALL. The Hong Kong Institute of Steel Construction, 2024. https://doi.org/10.18057/ijasc.2025.21.2.8.

Full text

Abstract:

This study investigates the shear performance of composite cold-formed thin-wall steel walls, particularly in two-story configurations. 9 test groups with varying axial compression and anchor bolt types were examined. Results show that, compared to single-story walls, the two-story walls exhibit lower energy dissipation and ductility, with floor joints being the weak link under cyclic loading. Out-of-plane instability and buckling failure often occur at the floor joint, which is critical to maintaining wall strength. The inter-layer tension bar has little effect on enhancing shear capacity. As

APA, Harvard, Vancouver, ISO, and other styles

3

NUMERICAL AND THEORETICAL STUDIES ON DOUBLE STEEL PLATE COMPOSITE WALLS UNDER COMPRESSION AT LOW TEMPERATURES. The Hong Kong Institute of Steel Construction, 2021. http://dx.doi.org/10.18057/ijasc.2021.17.4.6.

Full text

Abstract:

Double steel plate composite walls (DSCWs) with several unique types of connectors have been implemented to protect offshore oil exploration platforms from concentric forces caused by ice in the Arctic region. This paper investigates the compressive perfor-mance of DSCWs with interlocked J-hooks and overlapped headed studs at low temperatures ranging from 20 ℃ to -80 ℃ with nonlinear finite element models (FEMs). The intricate geometric size of the concrete, multiple interactions of the concrete with the connectors, and material nonlinearities of the concrete have been thoroughly simulated. Th

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!