Results 81 to 90 of about 1,741 (182)

Tool path optimization of globoidal cam flank milling based on spatial linear-regression analysis

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2019
In order to tackle the incongruous error of the normal vector of globoidal cam in non-equal diameter machining, the tool axis vector with minimum machining error is preliminarily fitted through the principle of ruled surface generation by using spatial ...
Panlong WU, Dongfang HU
doaj   +1 more source

Real-Time Trajectory Generation for Constrained Nonlinear Dynamical Systems Using Non-Uniform Rational B-Spline Basis Functions

open access: yes, 2008
The thesis describes a new method for obtaining minimizers for optimal control problems whose minima serve as control policies for guiding nonlinear dynamical systems to achieve prescribed goals under imposed trajectory and actuator constraints.
Flores Contreras, Melvin Estuardo
core   +1 more source

Optimizing Generative Design for Cam Curve Through NURBS Approach based on Objective Constraint

open access: yesJixie chuandong, 2016
A general searching method is presented for the optimum generative design of a cam curve.This method involves the use of Non Uniform Rational B- Splines( NURBS) outputs for representing the follower motions,namely as displacement,velocity and ...
Li Linwen, Lu Bo, Xiao Yang, Zhao Zhe
doaj  

Comparison of B-spline curve fitting of cubic trigonometric B-spline with shape parameter and non-uniform rational B-spline / Muhammad Firdaus Saizul [PDF]

open access: yes
B-splines are commonly used functions in geometrical design. Their ability to smoothly approximate curves with various methods makes them highly valuable in shape design.
Saizul, Muhammad Firdaus
core  

NURBS-compatible subdivision surfaces

open access: yes, 2010
Two main technologies are available to design and represent freeformsurfaces: Non-Uniform Rational B-Splines (NURBS) and subdivision surfaces. Both representations are built on uniform B-splines, but they extend this foundation in incompatible ways, and ...
Cashman, Thomas J.
core   +1 more source

Sensitivity Analysis of Underwater Structural-Acoustic Problems Based on Coupled Finite Element Method/Fast Multipole Boundary Element Method with Non-Uniform Rational B-Splines

open access: yesJournal of Marine Science and Engineering
For the direct differentiation technique-based modeling of acoustic fluid–structure interaction and structural-acoustic sensitivity analysis, a coupling algorithm based on the finite element method (FEM) and the fast multipole boundary element method ...
Yonghui Cao   +3 more
doaj   +1 more source

Pemodelan NURBS kabur dan penggunaannya untuk masalah data ketidakpastian

open access: yes, 2011
Pemodelan NURBS (Non-Uniform Rational B-Splines) dan teori set kabur merupakan dua bidang berbeza yang mempunyai peranan masing-masing dalam perwakilan matematik.
Mohd Sallehuddin Husain
core  

Radiation of a source on a convex NURBS surface

open access: yes, 2022
S.2346-2350In this paper we propose a technique for computing the ray caustic distance parameter on an arbitrary convex surface described by Non-Uniform Rational B-splines (NURBS) surface representation.
Toccafondi, A.   +2 more
core  

Particle Swarm Optimization of Non Uniform Rational B-Splines for Robot Manipulators Path Planning

open access: yes, 2017
The path-planning problem is commonly formulated to handle the obstacle avoidance constraints. This problem becomes more complicated when further restrictions are added. It often requires efficient algorithms to be solved.
Nabil Benoudjit   +5 more
core   +1 more source

BIM-based framework of automatic tunnel segment assembly and deviation control

open access: yesUnderground Space
The design of universal segments and deviation control of segment assembly are essential for robust and low-risk tunnel construction. A building information modeling (BIM)-based framework was proposed for parametric modeling, automatic assembly, and ...
Jian Gong   +4 more
doaj   +1 more source

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