Results 31 to 40 of about 14,416 (204)
A GEOMETRIC PROCESSING WORKFLOW FOR TRANSFORMING REALITY-BASED 3D MODELS IN VOLUMETRIC MESHES SUITABLE FOR FEA [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017 Conservation of Cultural Heritage is a key issue and structural changes and damages can influence the mechanical behaviour of artefacts and buildings. The use of Finite Elements Methods (FEM) for mechanical analysis is largely used in modelling stress ...
S. Gonizzi Barsanti, G. Guidi
doaj +1 more source
3D Reality-Based Survey and Retopology for Structural Analysis of Cultural Heritage
Sensors, 2022 Cultural heritage’s structural changes and damages can influence the mechanical behaviour of artefacts and buildings. The use of finite element methods (FEM) for mechanical analysis is largely used in modelling stress behaviour. The workflow involves the
Sara Gonizzi Barsanti +2 more
doaj +1 more source
Computational Visual Media, 2017 Existing shape models with spherical topology are typically designed either in the discrete domain using interpolating polygon meshes or in the continuous domain using smooth but non-interpolating schemes such as subdivision or NURBS. Both polygon models
D. Schmitter +2 more
doaj +1 more source
A simple approach to the numerical simulation with trimmed CAD surfaces
, 2015 In this work a novel method for the analysis with trimmed CAD surfaces is presented. The method involves an additional mapping step and the attraction stems from its sim- plicity and ease of implementation into existing Finite Element (FEM) or Boundary ...
Beer, Gernot +2 more
core +1 more source
Physically-Based NURBS Surface Editing With Curves [PDF]
Computer-Aided Design and Applications, 2012 AbstractThis paper presents a physically-based approach for NURBS surface modification using curve handles. The approach consists of three steps: curve handle creation, target curve generation, and surface modification. The handle curve is a composite curve that is a composition of a NURBS surface and a 2D parametric curve defined in the parameter ...
Ma, Yuewen, Zheng, Jianmin, Wang, Kai
openaire +3 more sources
An isogeometric analysis for elliptic homogenization problems
, 2013 A novel and efficient approach which is based on the framework of isogeometric analysis for elliptic homogenization problems is proposed. These problems possess highly oscillating coefficients leading to extremely high computational expenses while using ...
Hoang, T. +2 more
core +1 more source
Watermarking Algorithms for 3D NURBS Graphic Data
EURASIP Journal on Advances in Signal Processing, 2004 Two watermarking algorithms for 3D nonuniform rational B-spline (NURBS) graphic data are proposed: one is appropriate for the steganography, and the other for watermarking.
Jae Jun Lee, Nam Ik Cho, Sang Uk Lee
doaj +1 more source
Machines, 2023 As the applications for freeform optical surfaces continue to grow, the need for high-precision machining methods is becoming more and more of a necessity. Different toolpath strategies for the ultra-high precision turning of freeform surfaces can have a
Xuchu Wang +4 more
doaj +1 more source
ALPHA_I, Remote Manufacturing, and Solid Freeform Fabrication [PDF]
, 1990 Alpha_l is a nonuniform rational B-spline (NURBs) based solid modeling system that has been developed at the University of Utah over the past 10 years. In addition to being useful in modeling objects that are described by simple rotation and extrusion ...
Drake, Samuel H.
core +1 more source
Accuracy assessment of mine walls’ surface models derived from terrestrial laser scanning
International Journal of Coal Science & Technology, 2018 The monitoring of highwall slopes at open-pit mines is an important task to ensure safe mining. For this reason, several techniques such as total station, radar, terrestrial Light Detection and Ranging (LIDAR) can be employed for surface measurement. The
Nguyen Quoc Long +6 more
doaj +1 more source