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Efficient mass and stiffness matrix assembly via weighted Gaussian quadrature rules for B-splines
Barton, M.
; Puzyrev, V.; Deng, Q.; Calo, V.M. (2019-12-14)
; Puzyrev, V.; Deng, Q.; Calo, V.M. (2019-12-14)
Calabr{\`o} et al. [10] changed the paradigm of the mass and stiffness computation from the traditional element-wise assembly to a row-wise concept, showing that the latter one offers integration that may be orders of ...
5-axis double-flank CNC machining of spiral bevel gears via custom-shaped milling tools -- Part I: modeling and simulation
Bo, P.; Gonzalez, H.; Calleja, A.; Lopez de Lacalle, N.; Barton, M. (2019-11-20)
(2019-11-20)
A new category of 5-axis flank computer numerically controlled (CNC) machining, called \emph{double-flank}, is presented. Instead of using a predefined set of milling tools, we use the shape of the milling tool as a free ...
Studies on knot placement techniques for the geometry construction and the accurate simulation of isogeometric spatial curved beams
Hosseini, S.F.; Hashemian, A.; Reali, A. (2019-11)
; Reali, A. (2019-11)
The present paper investigates the use of different knot placement techniques for isogeometric analysis of spatial curved beams, to enhance analysis results in cases when geometries are given in terms of data points. ...
On the application of isogeometric finite volume method in numerical analysis of wet-steam flow through turbine cascades
Hashemian, A.; Lakzian, E.; Ebrahimi-Fizik, A. (2019-10)
; Lakzian, E.; Ebrahimi-Fizik, A. (2019-10)
The isogeometric finite volume analysis is utilized in this research to numerically simulate the two-dimensional viscous wet-steam flow between stationary cascades of a steam turbine for the first time. In this approach, ...
Explicit-in-Time Variational Formulations for Goal-Oriented Adaptivity
Muñoz-Matute, J. (2019-10)
(2019-10)
Goal-Oriented Adaptivity (GOA) is a powerful tool to accurately approximate physically relevant features of the solution of Partial Differential Equations (PDEs). It delivers optimal grids to solve challenging engineering ...
Portable simulation framework for diffusion MRI
Nguyen, V.D.; Leoni, M.; Dancheva, T.; Jansson, J.; Hoffman, J.; Wassermann, D.; Li, J.R. (2019-09-23)
; Jansson, J.; Hoffman, J.; Wassermann, D.; Li, J.R. (2019-09-23)
The numerical simulation of the diffusion MRI signal arising from complex tissue micro-structures is helpful for understanding and interpreting imaging data as well as for designing and optimizing MRI sequences. The ...
Reducing variability in the cost of energy of ocean energy arrays
Topper, M.B.R.; Nava, V.; Collin, A.J.; Bould, D.; Ferri, F.; Olson, S.S.; Dallmann, A.R.; Roberts, J.D.; Ruiz Minguela, P.; Jeffrey, H.F. (2019-09)
; Collin, A.J.; Bould, D.; Ferri, F.; Olson, S.S.; Dallmann, A.R.; Roberts, J.D.; Ruiz Minguela, P.; Jeffrey, H.F. (2019-09)
Variability in the predicted cost of energy of an ocean energy converter array is more substantial than for other forms of energy generation, due to the combined stochastic action of weather conditions and failures. If the ...
Variational Formulations for Explicit Runge-Kutta Methods
Muñoz-Matute, J.; Pardo, D.; Calo, V.M.; Alberdi, E. (2019-08)
; Pardo, D.; Calo, V.M.; Alberdi, E. (2019-08)
Variational space-time formulations for partial di fferential equations have been of great interest in the last decades, among other things, because they allow to develop mesh-adaptive algorithms. Since it is known ...
Snapshots location for Reduced Order Models: An approach based on Proper Orthogonal Decomposition and Mesh Adaptivity Techniques
(2019-06-28)
Solving Partial Differential Equations (PDE), is a key issue in science and engineering since they are widely used in many real problem modelling including fluid mechanics, acoustics, heat and mass transfer ...etc. Exact ...
Blisk blades manufacturing technologies analysis
Calleja, A.; Gonzalez, H.; Polvorosa, R.; Gomez, G.; Ayesta, I.; Barton, M.; de Lacalle, N. (2019-06)
; de Lacalle, N. (2019-06)
The paper presents blisk blades manufactured by different manufacturing processes. In this sense, different milling trajectories are presented, and, super abrasive machining strategies and EDM technologies are also tested. ...