Academic literature on the topic 'Modal sheaf'

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 'Modal sheaf.'

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 "Modal sheaf"

1

Kishida, Kohei. "Neighborhood-Sheaf Semantics for First-Order Modal Logic." Electronic Notes in Theoretical Computer Science 278 (November 2011): 129–43. http://dx.doi.org/10.1016/j.entcs.2011.10.011.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Robinson, Michael. "Aggregation sheaves for greedy modal decompositions." Journal of Physics Communications 6, no. 4 (2022): 045004. http://dx.doi.org/10.1088/2399-6528/ac6482.

Full text
Abstract:
Abstract This article develops a new theoretical basis for decomposing signals that are formed by the linear superposition of a finite number of modes. Each mode depends linearly on the weights within the superposition and nonlinearly upon several other parameters. The particular focus of this article is upon finding both the weights and the parameters when the number of modes is not known in advance. This article introduces a novel mathematical formalism, aggregation sheaves, and shows how they characterize the behavior of greedy algorithms that attempt to solve modal decomposition problems.
APA, Harvard, Vancouver, ISO, and other styles
3

Qi, Lin, Zhao Wei Huang, and Xue Ying Hu. "Nonlinear Seismic Responses Analysis of Jinwan Square No.9 Building." Advanced Materials Research 919-921 (April 2014): 999–1002. http://dx.doi.org/10.4028/www.scientific.net/amr.919-921.999.

Full text
Abstract:
Nonlinear time history seismic analysis of Jinwan square No. 9 building under strong earthquake is made. Three dimension structural nonlinear analysis and performance estimate programme Perform-3D is used to establish the calculatrion model. FEMA beam, shear strength section are used to set up the frame beam element modal; Moment plastic hinge, shear plastic hinge and elastic beam section are used to set up the link beam element modal; FEAM column and shear strength section are used to set up the column element modal; fiber wall element is used to model the sheae wall. Performances of the stru
APA, Harvard, Vancouver, ISO, and other styles
4

Miele, Chris, Timothy C. Bartholomaus, and Ellyn M. Enderlin. "Brief communication: Is vertical shear in an ice shelf (still) negligible?" Cryosphere 17, no. 7 (2023): 2701–4. http://dx.doi.org/10.5194/tc-17-2701-2023.

Full text
Abstract:
Abstract. Vertical shear is recognized today as a key component of the stress balance of ice shelves. However, the first ice shelf models were built on the neglect of vertical shear. Partly due to its historical treatment, it remains common to discuss vertical shear as though it were still considered negligible in ice shelf models. Here, we offer a historical perspective on the changing treatment of vertical shear over time, and we emphasize the term's non-negligibility in current ice shelf modeling. We illustrate our discussion in the simplest context of an analytic, isothermal, shallow-ice-s
APA, Harvard, Vancouver, ISO, and other styles
5

Schmeltz, Marjorie, Eric Rignot, Todd K. Dupont, and Douglas R. MacAyeal. "Sensitivity of Pine Island Glacier, West Antarctica, to changes in ice-shelf and basal conditions: a model study." Journal of Glaciology 48, no. 163 (2002): 552–58. http://dx.doi.org/10.3189/172756502781831061.

Full text
Abstract:
AbstractWe use a finite-element model of coupled ice-stream/ice-shelf flow to study the sensitivity of Pine Island Glacier, West Antarctica, to changes in ice-shelf and basal conditions. By tuning a softening coefficient of the ice along the glacier margins, and a basal friction coefficient controlling the distribution of basal shear stress underneath the ice stream, we are able to match model velocity to that observed with interferometric synthetic aperture radar (InSAR). We use the model to investigate the effect of small perturbations on ice flow. We find that a 5.5–13% reduction in our ini
APA, Harvard, Vancouver, ISO, and other styles
6

KIRMAZ, Cansu, Özer KINIK, and Filiz İÇİER. "Manda sütü ve diğer süt karışımlarıyla üretilen kefirlerin reolojik özelliklerinin belirlenmesi." Ege Üniversitesi Ziraat Fakültesi Dergisi 60, no. 1 (2023): 37–51. http://dx.doi.org/10.20289/zfdergi.1120746.

Full text
Abstract:
Objective: The objective of this study was to develop the product and to determine the rheological model and sensorial properties of kefir. Material and Methods: The shear rate (γ) and shear stress (τ) values measured at 15-20C using the rheological properties of kefir produced with different types of ruminant milk are characterized by mathematical models (Newton, Power law, Bingham), consistency coefficient (K), flow behavior index (n), threshold shear stress (τ0) and apparent viscosity (µapp) values were calculated. Sensory assessment was carried out using facial expression sensory evaluati
APA, Harvard, Vancouver, ISO, and other styles
7

Frolich, R. M., and D. R. MacAyeal. "Numerical Modelling Of Rutford Ice Stream, Antarctica." Annals of Glaciology 14 (1990): 336. http://dx.doi.org/10.3189/s0260305500008971.

Full text
Abstract:
A two-dimensional finite element model has been applied to Rutford Ice Stream, Antarctica, and part of Ronne Ice Shelf into which the ice stream flows. The model is an extension of one describing ice-shelf flow, and relies on vertical shear in the ice stream being small in some mathematically defined sense. This is equivalent to requiring the vertical shear to be confined to a basal layer or a deformable substrate.Although there is no direct observational evidence for such a layer beneath Rutford Ice Stream, extensive surface surveys and estimates of the strength of the overlying ice show that
APA, Harvard, Vancouver, ISO, and other styles
8

Frolich, R. M., and D. R. MacAyeal. "Numerical Modelling Of Rutford Ice Stream, Antarctica." Annals of Glaciology 14 (1990): 336. http://dx.doi.org/10.1017/s0260305500008971.

Full text
Abstract:
A two-dimensional finite element model has been applied to Rutford Ice Stream, Antarctica, and part of Ronne Ice Shelf into which the ice stream flows. The model is an extension of one describing ice-shelf flow, and relies on vertical shear in the ice stream being small in some mathematically defined sense. This is equivalent to requiring the vertical shear to be confined to a basal layer or a deformable substrate. Although there is no direct observational evidence for such a layer beneath Rutford Ice Stream, extensive surface surveys and estimates of the strength of the overlying ice show tha
APA, Harvard, Vancouver, ISO, and other styles
9

Kamali, Fatemeh, Amir Abolfazl Suratgar, Mohamad Bagher Menhaj, and Reza Abbasi Asl. "Receptive Field Encoding Model for Dynamic Natural Vision." Neuroscience Journal of Shefaye Khatam 7, no. 4 (2019): 1–7. http://dx.doi.org/10.29252/shefa.7.4.1.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Kumar, Nirnimesh, Falk Feddersen, Yusuke Uchiyama, James McWilliams, and William O’Reilly. "Midshelf to Surfzone Coupled ROMS–SWAN Model Data Comparison of Waves, Currents, and Temperature: Diagnosis of Subtidal Forcings and Response." Journal of Physical Oceanography 45, no. 6 (2015): 1464–90. http://dx.doi.org/10.1175/jpo-d-14-0151.1.

Full text
Abstract:
AbstractA coupled wave and circulation model that includes tide, wind, buoyancy, and wave processes is necessary to investigate tracer exchange in the shelf region. Here, a coupled Regional Ocean Model System (ROMS)–Simulating Waves Nearshore (SWAN) model, resolving midshelf to the surfzone region of the San Pedro Bay, California, is compared to observations from the 2006 Huntington Beach experiment. Waves are well modeled, and surfzone cross- and alongshore velocities are reasonably well modeled. Modeled and observed rotary velocity spectra compare well in subtidal and tidal bands, and temper
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Modal sheaf"

1

Tsotras, Achillefs. "On the interaction between modal behaviour and shear force behaviour of a pneumatic tyre." Thesis, Loughborough University, 2010. https://dspace.lboro.ac.uk/2134/6031.

Full text
Abstract:
The in-plane phenomena of interaction between the tyre structural response and contact force generation are investigated in this work. The challenges of the physical tyre simulation are identified, primarily associated with the computational load imposed by the need to capture the space distributed mechanisms that prescribe the above interaction. The method of modal expansion and reduction is proposed for the moderation of this load. The theoretical framework for the transformation of a tyre modal representation into a transient contact and shear force generation model is developed. Various mo
APA, Harvard, Vancouver, ISO, and other styles
2

Sadrizadeh, Sasan. "Instabilities in Pulsating Pipe Flow of Shear-Thinning and Shear-Thickening Fluids." Thesis, Linköpings universitet, Mekanisk värmeteori och strömningslära, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-82037.

Full text
Abstract:
In this study, we have considered the modal and non-modal stability of fluids with shear-dependent viscosity flowing in a rigid straight pipe. A second order finite-difference code is used for the simulation of pipe flow in the cylindrical coordinate system. The Carreau-Yasuda model where the rheological parameters vary in the range of 0.3 < n < 1.5 and 0.1 < λ < 100 is represents the viscosity of shear- thinning and shear thickening fluids. Variation of the periodic pulsatile forcing is obtained via the ratio Kω/Kο and set between 0.2 and 20. Zero and non-zero streamwise wavenumbe
APA, Harvard, Vancouver, ISO, and other styles
3

Trivedi, Arjav. "Shelf-edge exchange in a numerical model of the Shetland shelf." Thesis, Imperial College London, 2017. http://hdl.handle.net/10044/1/52909.

Full text
Abstract:
The fast Shetland slope current flows on one side of the Faroe-Shetland Channel (FSC). Mesoscale activity and bottom friction are mechanisms that affect the slope current, helping to mix water and tracers across the shelf-edge. We simulate the FSC dynamics using a high resolution (~ 2km) hydrostatic configuration of the Massachusetts Institute of Technology General Circulation Model (MITgcm). The model was validated against a variety of observations: surface currents; Sea Surface Temperatures (SSTs); Acoustic Doppler Current Profilers (ADCPs); hydrographic observations; and shelf-edge exchange
APA, Harvard, Vancouver, ISO, and other styles
4

Semeraro, Onofrio. "Feedback control and modal structures in transitional shear flows." Licentiate thesis, KTH, Stabilitet, Transition, Kontroll, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-29754.

Full text
Abstract:
Two types of shear flows are investigated in this thesis; numerical simulations are performed for the analysis and control of the perturbation arising in a boundary layer over a flat plate, whereas PIV measurements are analysed for the investigation of a confined turbulent jet. Modal structures of the flows are identified: the aim is to understand the flow phenomena and to identify reduced-order models for the feedback control design. The attenuation of three-dimensional wavepackets of streaks and Tollmien-Schlichting (TS) waves in the boundary layer is obtained using feedback control based on
APA, Harvard, Vancouver, ISO, and other styles
5

Semeraro, Onofrio. "Active Control and Modal Structures in Transitional Shear Flows." Doctoral thesis, KTH, Stabilitet, Transition, Kontroll, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-117916.

Full text
Abstract:
Flow control of transitional shear flows is investigated by means of numerical simulations. The attenuation of three-dimensional wavepackets of Tollmien-Schlichting (TS) and streaks in the boundary layer is obtained using active control in combination with localised sensors and actuators distributed near the rigid wall. Due to the dimensions of the discretized Navier-Stokes operator, reduced-order models are identified, preserving the dynamics between the inputs and the outputs of the system. Balanced realizations of the system are computed using balanced truncation and system identification.
APA, Harvard, Vancouver, ISO, and other styles
6

Strömgren, Tobias. "Model predictions of turbulent gas-particle shear flows." Doctoral thesis, KTH, Mekanik, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-12135.

Full text
Abstract:
A turbulent two-phase flow model using kinetic theory of granularflows for the particle phase is developed and implmented in afinite element code. The model can be used for engineeringapplications. However, in this thesis it is used to investigateturbulent gas-particle flows through numerical simulations.  The feedback from the particles on the turbulence and the meanflow of the gas in a vertical channel flow is studied. In particular,the influence of the particle response time, particle volumefraction and particle diameter on the preferential concentration ofthe particles near the walls, caus
APA, Harvard, Vancouver, ISO, and other styles
7

Daly, Conor Anthony. "Nonlinear and non-modal stability of structures evolving in shear flows." Thesis, University of Cambridge, 2014. https://www.repository.cam.ac.uk/handle/1810/245254.

Full text
Abstract:
This thesis explores a range of stability techniques applied to fluid structures that develop in various constant density flows. In particular, the stability of nonlinear structures which develop in rotating plane Couette flow is analyzed using Floquet theory, which allows the global stability of an important secondary nonlinear structure called a Taylor vortex to be determined. From this the distinct tertiary states which emerge as Taylor vortices break down are characterized and their bifurcation behaviour is studied. Also, non-modal stability analyses are conducted in rotating plane Couette
APA, Harvard, Vancouver, ISO, and other styles
8

Gang, Liu. "VERIFICATION OF SHEAR WAVE VELOCITY BASED LIQUEFACTION CRITERIA USING CENTRIFUGE MODEL." Case Western Reserve University School of Graduate Studies / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=case1228274570.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Al-Mulla, Adam. "Droplet coalescence in the shear flow of model emulsions." Morgantown, W. Va. : [West Virginia University Libraries], 1998. http://etd.wvu.edu/templates/showETD.cfm?recnum=384.

Full text
Abstract:
Thesis (M.S.)--West Virginia University, 1998.<br>Title from document title page. Document formatted into pages; contains xxi, 153 p. : ill. Includes abstract. Includes bibliographical references (p. 68-72).
APA, Harvard, Vancouver, ISO, and other styles
10

Lyman, Noah J. "Incorporating Shear Resistance into Debris Flow Triggering Model Statistics." DigitalCommons@CalPoly, 2020. https://digitalcommons.calpoly.edu/theses/2254.

Full text
Abstract:
Several regions of the Western United States utilize statistical binary classification models to predict and manage debris flow initiation probability after wildfires. As the occurrence of wildfires and large intensity rainfall events increase, so has the frequency in which development occurs in the steep and mountainous terrain where these events arise. This resulting intersection brings with it an increasing need to derive improved results from existing models, or develop new models, to reduce the economic and human impacts that debris flows may bring. Any development or change to these mode
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "Modal sheaf"

1

United States. National Aeronautics and Space Administration., ed. A random distribution reacting mixing layer model. National Aeronautics and Space Administration, 1994.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Carson, Andrew B. Model completions, ring representations, and the topology of the Pierce sheaf. Longman Scientific & Technical, 1989.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Chen, Simon A. A shear-friction truss model for reinforced concrete beams subjected to shear. Dept. of Civil Engineering, University of Alberta, 1993.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Landslide Hazard Reduction Program (Geological Survey), ed. A model for grain flow and debris flow. U.S. Dept. of the Interior, U.S. Geological Survey, 1996.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

-W, Liou William W., Shih Tsan-Hsing 1940-, and United States. National Aeronautics and Space Administration., eds. A multiple-scale turbulence model for incompressible flow. National Aeronautics and Space Administration, 1993.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

-W, Liou William W., Shih Tsan-Hsing 1940-, and United States. National Aeronautics and Space Administration., eds. A multiple-scale turbulence model for incompressible flow. National Aeronautics and Space Administration, 1993.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

W, Liou W., Shih T. H, and United States. National Aeronautics and Space Administration., eds. A multiple-scale turbulence model for incompressible flow. National Aeronautics and Space Administration, 1993.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

United States. National Aeronautics and Space Administration. Scientific and Technical Information Division., ed. Spectrum modal analysis for the detection of low-altitude windshear with airborne Doppler radar. National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Program, 1992.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

United States. National Aeronautics and Space Administration. Scientific and Technical Information Division., ed. Spectrum modal analysis for the detection of low-altitude indshear with airborne Doppler radar. National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Program, 1992.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

Whitehead, J. A. A laboratory model of a cooled continental shelf. Woods Hole Oceanographic Institution, 1993.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "Modal sheaf"

1

Janicka, J., and W. Kollmann. "Reynolds-Stress Closure Model for Conditional Variables." In Turbulent Shear Flows 4. Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-69996-2_6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Byggstøyl, S., and B. F. Magnussen. "A Model for Flame Extinction in Turbulent Flow." In Turbulent Shear Flows 4. Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-69996-2_31.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Nagano, Y., and M. Tagawa. "Turbulence Model for Triple Velocity and Scalar Correlations." In Turbulent Shear Flows 7. Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-76087-7_5.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Veynante, D., F. Lacas, E. Maistret, and S. M. Candel. "Coherent Flame Model for Non-Uniformly Premixed Turbulent Flames." In Turbulent Shear Flows 7. Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-76087-7_27.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Toschi, F., E. Lévêque, L. Shao, and J. P. Bertoglio. "Shear-Improved Smagorinsky Model." In Springer Proceedings Physics. Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-72604-3_101.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Arad, Eran, and Micha Wolfshtein. "Two-Scale Double-Layer Model in Wall Bounded Turbulent Flow." In Turbulent Shear Flows 9. Springer Berlin Heidelberg, 1995. http://dx.doi.org/10.1007/978-3-642-78823-9_2.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Mantel, T., R. Borghi, and A. Picart. "Turbulent Premixed Flame Propagation Revisited Results with a New Model." In Turbulent Shear Flows 9. Springer Berlin Heidelberg, 1995. http://dx.doi.org/10.1007/978-3-642-78823-9_27.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Sandham, N. D. "A Model Equation for Transitional and Turbulent Plane Channel Flow." In Turbulent Shear Flows 8. Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-77674-8_6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Mulchrone, Kieran F., Patrick A. Meere, and Dave J. McCarthy. "2D model for development of steady-state and oblique foliations in simple shear and more general deformations." In Ductile Shear Zones. John Wiley & Sons, Ltd, 2015. http://dx.doi.org/10.1002/9781118844953.ch3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Rasolofosaon, Patrick N. J. "Rock Acoustics: Relevance of the Porous Viscoelastic Model." In Shear Waves in Marine Sediments. Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3568-9_18.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Modal sheaf"

1

Carcamo, Sebastian, Cristopher Gallegos, and Diego Valdivieso. "EQUIVALENT SHELL MODEL FOR CLT SHEAR WALLS." In World Conference on Timber Engineering 2025. World Conference On Timber Engineering 2025, 2025. https://doi.org/10.52202/080513-0151.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

MANKBADI, R. "The effect of bi-modal excitation on the spreading rate of a circular jet." In Shear Flow Control Conference. American Institute of Aeronautics and Astronautics, 1985. http://dx.doi.org/10.2514/6.1985-572.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Cho, Yongseung, Ramesh Agarwal, Kyungmoon Nho, Yongseung Cho, Ramesh Agarwal, and Kyungmoon Nho. "Neural network approaches to some model flow control problems." In 4th Shear Flow Control Conference. American Institute of Aeronautics and Astronautics, 1997. http://dx.doi.org/10.2514/6.1997-1871.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

LANDAHL, M., and D. HENNINGSON. "The effects of drag reduction measures on boundary layer turbulence structure - Implications of an inviscid model." In Shear Flow Control Conference. American Institute of Aeronautics and Astronautics, 1985. http://dx.doi.org/10.2514/6.1985-560.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Frederich, Octavian, and Dirk M. Luchtenburg. "MODAL ANALYSIS OF COMPLEX TURBULENT FLOW." In Seventh International Symposium on Turbulence and Shear Flow Phenomena. Begellhouse, 2011. http://dx.doi.org/10.1615/tsfp7.360.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Kalghatgi, Prasad, and Sumanta Acharya. "Modal Analysis of Countercurrent Shear Flows." In 42nd AIAA Fluid Dynamics Conference and Exhibit. American Institute of Aeronautics and Astronautics, 2012. http://dx.doi.org/10.2514/6.2012-3080.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Davidson, Lars, та Shia-Hui Peng. "A HYBRID LES-RANS MODEL BASED ON A ONE-EQUATION SGS MODEL AND A TWO-EQUATION K-ω MODEL". У Second Symposium on Turbulence and Shear Flow Phenomena. Begellhouse, 2001. http://dx.doi.org/10.1615/tsfp2.1030.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Butler, David M. "The Sheaf Data Model: A Rigorous Data Model for Scientific Computing." In 2012 SC Companion: High Performance Computing, Networking, Storage and Analysis (SCC). IEEE, 2012. http://dx.doi.org/10.1109/sc.companion.2012.159.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Naik, Sagar, and B. Prabhakaran. "Shear invariant 3D model retrieval." In Electronic Imaging 2007, edited by Longin Jan Latecki, David M. Mount, and Angela Y. Wu. SPIE, 2007. http://dx.doi.org/10.1117/12.708708.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Stumpfrock, Ludwig, Ulrich Weber, Stefan Weihe, Michael Seidenfuss, and Linda Mally. "Investigations on the Failure Behavior of Specimens Containing Crack Fields Made by Additive Manufacturing." In ASME 2022 Pressure Vessels & Piping Conference. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/pvp2022-84666.

Full text
Abstract:
Abstract Laminar and quasi-laminar orientations of hydrogen flakes with an inclination up to 16° to the pressure retaining surface were found in pressure vessels of Belgian nuclear power plants. Because of their orientation, these crack tips undergo predominantly mixed-mode loading conditions under internal pressure and the induced stress and strain fields of the single crack tips influence each other. In a former paper, the failure behavior under mixed-mode loading conditions was investigated at RT (Room Temperature) in the upper shelf and in the lower transition region of the steel 22NiMoCr3
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Modal sheaf"

1

Kinikles, Dellena, and John McCartney. Hyperbolic Hydro-mechanical Model for Seismic Compression Prediction of Unsaturated Soils in the Funicular Regime. Pacific Earthquake Engineering Research Center, University of California, Berkeley, CA, 2022. http://dx.doi.org/10.55461/yunw7668.

Full text
Abstract:
A semi-empirical elasto-plastic constitutive model with a hyperbolic stress-strain curve was developed with the goal of predicting the seismic compression of unsaturated sands in the funicular regime of the soil-water retention curve (SWRC) during undrained cyclic shearing. Using a flow rule derived from energy considerations, the evolution in plastic volumetric strain (seismic compression) was predicted from the plastic shear strains of the hysteretic hyperbolic stress-strain curve. The plastic volumetric strains are used to predict the changes in degree of saturation from phase relationships
APA, Harvard, Vancouver, ISO, and other styles
2

Bhushan, Shanti, Greg Burgreen, Wesley Brewer, and Ian Dettwiller. Assessment of neural network augmented Reynolds averaged Navier Stokes turbulence model in extrapolation modes. Engineer Research and Development Center (U.S.), 2025. https://doi.org/10.21079/11681/49702.

Full text
Abstract:
A machine-learned model enhances the accuracy of turbulence transport equations of RANS solver and applied for periodic hill test case. The accuracy is investigated in extrapolation modes. A parametric study is also performed to understand the effect of network hyperparameters on training and model accuracy and to quantify the uncertainty in model accuracy due to the non-deterministic nature of the neural network training. For any network, less than optimal mini-batch size results in overfitting, and larger than optimal reduces accuracy. Data clustering is an efficient approach to prevent the
APA, Harvard, Vancouver, ISO, and other styles
3

Mojidra, Rushil, and Keri Ryan. Influence of Vertical Ground Motion on Bridges Isolated with Spherical Sliding Bearings. Pacific Earthquake Engineering Research Center, University of California, Berkeley, CA, 2019. http://dx.doi.org/10.55461/rynq3624.

Full text
Abstract:
The motivation for this project developed from testing of a full scale building isolated with triple friction pendulum bearings on the E-defense shake table in Japan. The test demonstrated experimentally that the vertical component of ground motion can amplify both the base shear and the story acceleration in the isolated building. Vertical shaking introduced high-frequency variation in the axial force of the bearings, and, consequently, a high-frequency component in the bearing lateral force, which excited higher structural modes in the building. Since vertical bridges are flexible in the ver
APA, Harvard, Vancouver, ISO, and other styles
4

Wright, T. W., and H. Ockendon. A Model For Fully Formed Shear Bands. Defense Technical Information Center, 1992. http://dx.doi.org/10.21236/ada254713.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Whitehead, J. A., and Robert E. Frazel. A Laboratory Model of a Cooled Continental Shelf. Defense Technical Information Center, 1993. http://dx.doi.org/10.21236/ada270862.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Busby, Ryan, Wade Wall, and Lauren Bosche. Remote detection of soil shear strength in Arctic and subarctic environments. Engineer Research and Development Center (U.S.), 2025. https://doi.org/10.21079/11681/49815.

Full text
Abstract:
Soil shear strength affects many military activities and is affected significantly by plant roots. Unfortunately, root contribution to soil shear strength is difficult to measure and predict. In the boreal forest ecosystem, soil and hydrologic dynamics make soil shear strength less predictable, while the need for prediction grows due to the rapid changes occurring in this environment. Our current study objectives are to (1) observe possible aboveground vegetation indicators of soil shear strength variation across soils and other environmental heterogeneity, (2) observe possible image-based ind
APA, Harvard, Vancouver, ISO, and other styles
7

Spang, M. C., T. B. Casper, and K. I. Thomassen. Model development for transport studies in negative shear modes. Office of Scientific and Technical Information (OSTI), 1997. http://dx.doi.org/10.2172/598539.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Ziegler, Nancy, Nicholas Webb, John Gillies, et al. Plant phenology drives seasonal changes in shear stress partitioning in a semi-arid rangeland. Engineer Research and Development Center (U.S.), 2023. http://dx.doi.org/10.21079/11681/47680.

Full text
Abstract:
Accurate representation of surface roughness in predictive models of aeolian sediment transport and dust emission is required for model accuracy. While past studies have examined roughness effects on drag partitioning, the spatial and temporal variability of surface shear velocity and the shear stress ratio remain poorly described. Here, we use a four-month dataset of total shear velocity (u*) and soil surface shear velocity (us*) measurements to examine the spatiotemporal variability of the shear stress ratio (R) before, during, and after vegetation green-up at a honey mesquite (Prosopis glan
APA, Harvard, Vancouver, ISO, and other styles
9

Hoffman, Matthew, Carolyn Begeman, Xylar Asay-Davis, et al. Ice-shelf freshwater triggers for the Filchner-Ronne Ice Shelf melt tipping point in a global ocean model. Office of Scientific and Technical Information (OSTI), 2024. http://dx.doi.org/10.2172/2377762.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Spaulding and Isaji. L51494 Design Flow Conditions Near Bottom -- A Phase I. Pipeline Research Council International, Inc. (PRCI), 1995. http://dx.doi.org/10.55274/r0010639.

Full text
Abstract:
Includes theoretical development and application as well as a user's manual for using a methodology to predict the near-bottom velocity profiles for submarine pipelines stability by integrating the BBLM into a shelf circulation model. Programs and examples are given in the manual.
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!