Prohlížení ČVUT - elektronické publikace dle autora "444b778e-0e6b-4be8-a8f6-d538be3c2cde"
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AUTOMATED BIM ENTITY RECONSTRUCTION FROM UNSTRUCTURED 3D POINTCLOUDS
Autor: Voříšek, Jan; Patzák, Bořek; Dvořáková, Edita; Rypl, Daniel
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)Laser scanning is used widely in architecture and construction to document existing buildings by providing accurate data for creating a 3D model. The output is a set of data points in space, so-called point cloud. While ... -
Automatic extraction of 3d building meshes from LiDAR data
Autor: Voříšek, Jan; Patzák, Bořek; Rypl, Daniel
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)Terrestrial laser scanning and drone-based scanning are often combined to gain a complete picture of the external envelopes of buildings. While the resulting data sets are easy to understand for humans, extracting any ... -
FICTITIOUS DOMAIN METHOD FOR NUMERICAL SIMULATION OF INCOMPRESSIBLE VISCOUS FLOW AROUND RIGID BODIES
Autor: Beno , Matej; Patzák , Bořek
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)This article describes the method of efficient simulation of the flow around potentially many rigid obstacles. The finite element implementation is based on the incompressible Navier-Stokes equations using structured, ... -
IMPLEMENTATION OF 3D VOF TRACKING ALGORITHM BASED ON BINARY SPACE-PARTITIONING
Autor: Kolařík , Filip; Patzák , Bořek
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)The paper focuses on modelling free surface flow. The interface is modelled using the Volume-Of-Fluid method, where the advection of volume fractions is treated by a purely geometrical method. The novelty of the work lies ... -
ISOGEOMETRIC BEAM ELEMENT EXTENDED FOR GRIDSHELL ANALYSIS
Autor: Dvořáková, Edita; Patzák, Bořek
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2018)The design of gridshell structures is a complicated process, as the resulting shape of structure depends on initial undeformed grid geometry as well as on the history of boundary conditions used to form the final structure. ... -
MUPIF WORKFLOW EDITOR AND AUTOMATIC CODE GENERATOR
Autor: Šulc, Stanislav; Šmilauer, Vít; Patzák, Bořek
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)Integrating applications or codes into MuPIF API Model enables easy integration of such APIs into any workflow representing complex multiphysical simulation. This concept of MuPIF also enables automatic code generation of ... -
ON COMPARISON OF 3D ISOGEOMETRIC TIMOSHENKO AND BERNOULLI BEAM FORMULATIONS
Autor: Dvořáková, Edita; Patzák, Bořek
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)Application of isogeometric analysis (IGA) for curved beams is very convenient for its ability of exact representation of curved geometries. Several beam formulation has been presented since the introduction of IGA. In ... -
ON DEVELOPMENT OF THE INTERACTIVE DESIGN TOOL BASED ON ISOGEOMETRIC ANALYSIS
Autor: Dvořáková, Edita; Patzák, Bořek
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)Isogeometric analysis is a new concept of Finite element method which has been proposed to bridge the gap between the CAD systems and the FEM solvers. In Isogeometric analysis, the same basis functions, typically splines ... -
ON EVALUATION OF THE THREE-DIMENSIONAL ISOGEOMETRIC BEAM ELEMENT
Autor: Dvořáková, Edita; Patzák, Bořek
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)The exact description of the arbitrarily curved geometries, including conic sections, is an undeniable advantage of isogeometric analysis (IGA) over standard finite element method (FEM). With B-spline/NURBS approximation ... -
ON TUNING THE DYNAMIC LOAD BALANCING FEM FRAMEWORK
Autor: Bošanský, Michal; Patzák, Bořek
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)Developments in computer hardware are currently bringing new opportunities for numerical modelling. The current trend in technology is parallel processing making use of multiple processing units simultaneously to solve a ... -
PARALLEL APPROACH TO SOLVE OF THE DIRECT SOLUTION OF LARGE SPARSE SYSTEMS OF LINEAR EQUATIONS
Autor: Bošanský, Michal; Patzák, Bořek
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)The paper deals with parallel approach for the numerical solution of large, sparse, non-symmetric systems of linear equations, that can be part of any finite element software. In this contribution, the differences between ... -
PARALLELIZATION OF ASSEMBLY OPERATION IN FINITE ELEMENT METHOD
Autor: Bošanský , Michal; Patzák , Bořek
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)The efficient codes can take an advantage of multiple threads and/or processing nodes to partition a work that can be processed concurrently. This can reduce the overall run-time or make the solution of a large problem ... -
PERFORMANCE EVALUATION OF DIFFERENT LINEAR EQUATION SOLVERS FOR SOLVING NONLINEAR FE PROBLEMS ON MULTICORE ARCHITECTURES
Autor: Bošanský, Michal; Patzák, Bořek
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2018)The aim of this paper is to evaluate the performance of existing parallel linear equation solvers to solving large-scale, nonlinear finite element analysis problems on systems with distributed memory. The parallel approach ... -
PRE-PROCESSING OF ADDITIVE MANUFACTURING INPUT FILES FOR NUMERICAL SIMULATION
Autor: Voříšek, Jan; Patzák, Bořek
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)In this contribution, we present the concept of a 3D printer software emulator facilitating the creation of a spatial finite element mesh suitable for the printing process simulation. The concept is based on gradual ...