Results 71 to 80 of about 2,859,736 (314)

ON EVALUATION OF THE THREE-DIMENSIONAL ISOGEOMETRIC BEAM ELEMENT

open access: yesActa Polytechnica CTU Proceedings, 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).
Edita Dvořáková, Bořek Patzák
doaj   +1 more source

Microstructure Evolution of a VMnFeCoNi High‐Entropy Alloy After Synthesis, Swaging, and Annealing

open access: yesAdvanced Engineering Materials, EarlyView.
The synthesis and processing (rotary swaging and annealing) of the novel VMnFeCoNi alloy is investigated, alongside the estimation of the grain size effect on hardness. Analysis of a wide grain size range of recrystallized microstructures (12–210 µm) reveals a low annealing twin density.
Aditya Srinivasan Tirunilai   +6 more
wiley   +1 more source

锥椭球反光镜加工与检测原理与应用

open access: yesJixie chuandong, 2011
Surfaces shaped by conic sections are widely applied in engineering practice.Grinding machining based on custom macro B is proposed to improve efficiency and accuracy of taper ellipsoid manufacturing.The tool moves exactly according to the section ...
赵文辉, 段振云, 何龙, 任仲伟
doaj  

The high-accuracy geometric approximation of the ellipse's perimeter by the measuring right-angled triangle

open access: yesAlifmatika
This article confronts the persistent challenge of determining the exact perimeter of an ellipse. It proposes a high-accuracy geometric approximation centred on a uniquely defined Measuring Right-Angled Triangle (MRAT).
Laith H. M. Al-ossmi
doaj   +1 more source

Implicit equations of non-degenerate rational Bezier quadric triangles

open access: yes, 2015
In this paper we review the derivation of implicit equations for non-degenerate quadric patches in rational Bezier triangular form. These are the case of Steiner surfaces of degree two.
Canton, A.   +3 more
core   +1 more source

3D (Bio) Printing Combined Fiber Fabrication Methods for Tissue Engineering Applications: Possibilities and Limitations

open access: yesAdvanced Functional Materials, EarlyView.
Biofabrication aims at providing innovative technologies and tools for the fabrication of tissue‐like constructs for tissue engineering and regenerative medicine applications. By integrating multiple biofabrication technologies, such as 3D (bio) printing with fiber fabrication methods, it would be more realistic to reconstruct native tissue's ...
Waseem Kitana   +2 more
wiley   +1 more source

Least squares fitting of conic sections with type identification by NURBS of degree two [PDF]

open access: yes, 1999
Fitting of conic sections is used in reflectometry, aircraft industry, metrology, computer vision, astronomy and propagation of sound waves [5]. So far numerical algorithms assume the type of the conic section to be known in advance.
H. Späth, I. Seufer
core  

GIT Compactifications of $M_{0,n}$ from Conics

open access: yes, 2015
We study GIT quotients parametrizing n-pointed conics that generalize the GIT quotients $(\mathbb{P}^1)^n//SL2$. Our main result is that $\overline{M}_{0,n}$ admits a morphism to each such GIT quotient, analogous to the well-known result of Kapranov for ...
Giansiracusa, Noah, Simpson, Matthew
core   +1 more source

MOFs and COFs in Electronics: Bridging the Gap between Intrinsic Properties and Measured Performance

open access: yesAdvanced Functional Materials, EarlyView.
Metal‐organic frameworks (MOFs) and covalent organic frameworks (COFs) hold promise for advanced electronics. However, discrepancies in reported electrical conductivities highlight the importance of measurement methodologies. This review explores intrinsic charge transport mechanisms and extrinsic factors influencing performance, and critically ...
Jonas F. Pöhls, R. Thomas Weitz
wiley   +1 more source

Isogeometric analysis of two-dimensional piezoelectric structures

open access: yesVietnam Journal of Mechanics, 2013
The isogeometric analysis (IGA) that integrates Computer Aided Design(CAD) and Computer Aided Engineering (CAE) is found so far the effectively numerical tool for the analysis of a variety of practical problems.
Hoang H. Truong   +2 more
doaj   +1 more source

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