Results 101 to 110 of about 3,956 (194)

Numerical Investigation of the Limit Strains in Sheet Forming Involving Bending [PDF]

open access: yes, 2008
In this work, the finite element method is used to simulate a typical FLD test over tools of different radii. Parameters like the mesh density, element type, numerical determination of the onset of strain localization, limit strain definition etc.
ABED-MERAIM, Farid, BALAN, Tudor
core   +3 more sources

Algebraic quantum field theory in curved spacetimes

open access: yes, 2015
This article sets out the framework of algebraic quantum field theory in curved spacetimes, based on the idea of local covariance. In this framework, a quantum field theory is modelled by a functor from a category of spacetimes to a category of ($C ...
Fewster, Christopher J., Verch, Rainer
core   +1 more source

Experimental Study and Neural Network Model to Predict Formability of Magnesium Alloy AZ31B [PDF]

open access: yesE3S Web of Conferences
Magnesium alloy is an emerging smart metal used in various industries like automotive and aerospace industry, due to their lightweight and excellent strength-to-weight ratio. Formability, a critical factor in manufacturing processes, determines the alloy’
Balaji Viswanadhapalli   +4 more
doaj   +1 more source

The importance of the deformation necks in forming [PDF]

open access: yes, 2012
Cílem této bakalářské práce je vypracování rešerše na téma deformační sítě v oblasti tváření. V práci jsou popsány jednotlivé metody nanášení sítí. Jsou zhodnoceny jejich výhody a nevýhody a využití v praxi. Mimoto je provedeno srovnání nejpoužívanějších
Kučera, Radek
core  

A review on formability prediction and constitutive damage models of sheet forming of magnesium alloys [PDF]

open access: yes, 2016
In recent years, the demand for using magnesium (Mg) alloys has significantly increased in several industrial fields. Due to their favorable strength/weight ratio thus Mg alloy demonstrating a valid replacement for aluminum alloys and High Strength ...
Farouk, M., Mohamed, M.
core  

Endomorphisms and automorphisms of locally covariant quantum field theories

open access: yes, 2013
In the framework of locally covariant quantum field theory, a theory is described as a functor from a category of spacetimes to a category of *-algebras.
Buchholz D.   +5 more
core   +1 more source

Prediction of strain localization during sheet metal forming using bifurcation analysis and Gurson-type damage [PDF]

open access: yes, 2011
The strain localization phenomenon that may occur during sheet metal forming represents a major cause of defective parts produced in the industry. Several instability criteria have been developed in the literature to predict the occurrence of these ...
ABED-MERAIM, Farid   +3 more
core   +3 more sources

Temperature and strain rate influence on AA5086 Forming Limit Curves: experimental results and discussion on the validity of the M-K model

open access: yes, 2014
International audienceDue to the high-strength to weigh ratio, corrosion resistance, good workability and weldability characteristics, aluminium alloys are increasingly used in many sectors. Researches on formability of aluminium alloy sheets have always
Chu, Xingrong   +3 more
core   +3 more sources

Experimental review of diffractive phenomena

open access: yes, 2004
A review is given of the measurements of the hard diffractive interactions in recent years from two high-energy colliders, the HERA $ep$ collider and the Tevatron $p\bar{p}$ collider.
Abbott   +8 more
core   +2 more sources

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