Results 81 to 90 of about 3,949 (176)

Bifurcation analysis based on a material model with stress-rate dependency and non-associated flow rule for fracture prediction in metal forming [PDF]

, 2017
Recent increasing application of advanced high-strength metals causes grow-ing demand for accurate fracture prediction in metal forming simulation. However, since the construction of objective and reliable fracture prediction method is generally difficult,
Ito, Koichi, Mori, Naomichi, Oya, Tetsuo, Uemura, Gen, Yanagimoto, Jun   +4 more
core  

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

, 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

Tilted and crossing vortex chains in layered superconductors

, 2004
In the presence of the Josephson vortex lattice in layered superconductors, a small c-axis magnetic field penetrates in the form of vortex chains. In general, the structure of a single chain is determined by the ratio of the London [$\lambda$] and ...
A. Buzdin, A. E. Koshelev, A. E. Koshelev, A. E. Koshelev, A. E. Koshelev, A. Grigorenko, A. I. Buzdin, A. I. Buzdin, A. M. Thompson, B. I. Ivlev, C. A. Bolle, D. Feinberg, L. L. Daemen, L. N. Bulaevskii, M. Benkraouda, M. J. W. Dodgson, T. Matsuda   +16 more
core   +1 more source

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

E3S 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, Naga Sai Reddy Elavala, Adithya Makam, Venkata Ganga Prasanna Kumar Reddy Mallu, Krishna Chythanya Nagaraju   +4 more
doaj   +1 more source

The importance of the deformation necks in forming [PDF]

, 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  

Endomorphisms and automorphisms of locally covariant quantum field theories

, 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., CHRISTOPHER J. FEWSTER, Mac Lane S., Reed M., Takesaki M., Weyl H.   +5 more
core   +1 more source

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

, 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  

Effects of a strain rate sensitive material on the optimization of an hydroforming process

, 2008
International audienceThe hydroforming process of a T-tube is simulated with the finite element code ABAQUS. The influence of the internal pressure and the axial displacement levels on the final tube quality is evaluated through a "process diagram".
Guines, Dominique, Leotoing, Lionel, Ragneau, Eric, Zhang, Cunsheng   +3 more
core   +3 more sources

Algebraic quantum field theory in curved spacetimes

, 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

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

, 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, Guines, Dominique, Leotoing, Lionel, Ragneau, Eric   +3 more
core   +3 more sources