Results 41 to 50 of about 443,352 (208)

The limit diagram under hot sheet metal forming. A review of constitutive models of material, viscous failure criteria and standard tests

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2018
Methods of theoretical analysis and experimental verification of conditions of limit deformation are considered for a reasonable choice of the constitutive equations for mathematical modeling of processes of hot and warm treatment by pressure of sheet ...
Ilya E Keller   +3 more
doaj   +1 more source

SmartGD: A GAN-Based Graph Drawing Framework for Diverse Aesthetic Goals [PDF]

open access: yesarXiv, 2022
While a multitude of studies have been conducted on graph drawing, many existing methods only focus on optimizing a single aesthetic aspect of graph layouts, which can lead to sub-optimal results. There are a few existing methods that have attempted to develop a flexible solution for optimizing different aesthetic aspects measured by different ...
arxiv  

Analysis of non-isothermal warm deep drawing of dual-phase DP600 steel

open access: yesInternational Journal of Material Forming, 2018
Improving the formability of the material is a key issue in the deep drawing process. Heating the material above its recrystallization temperature drastically increases formability, but in the case of dual phase (DP) steels, it results in a loss of their mechanical properties.
Pepelnjak, T.   +2 more
openaire   +3 more sources

Identifying Cluttering Edges in Near-Planar Graphs [PDF]

open access: yesarXiv, 2023
Planar drawings of graphs tend to be favored over non-planar drawings. Testing planarity and creating a planar layout of a planar graph can be done in linear time. However, creating readable drawings of nearly planar graphs remains a challenge. We therefore seek to answer which edges of nearly planar graphs create clutter in their drawings generated by
arxiv  

Two step–ageing of 7xxx series alloys with an intermediate warm-forming step

open access: yesJournal of Materials Research and Technology, 2021
Two-step ageing of 7xxx series alloys can reduce ageing time while obtaining similar mechanical properties as a longer isothermal heat treatment. In this paper, an intermediate deep-drawing step at 120–160 °C is introduced to produce elongated cup–shaped
Johannes A. Österreicher   +5 more
doaj  

'White knuckle care work' : violence, gender and new public management in the voluntary sector [PDF]

open access: yes, 2011
Drawing on comparative data from Canada and Scotland, this article explores reasons why violence is tolerated in non-profit care settings. This article will provide insights into how workers' orientations to work, the desire to care and the intrinsic ...
Baines C   +19 more
core   +1 more source

On the Potential for Bioenergy and Biofuels from Hydrothermal Vent Microbes [PDF]

open access: yesOceanography, 2012
The discovery of deep-sea hydrothermal vents caused scientists to reconsider their notions about life in the deep sea. In these seemingly inhospitable environments, free-living microbes, as well as microbial-animal symbioses, thrive in the warm waters ...
Peter R. Girguis, James F. Holden
doaj  

A Dislocation based Constitutive Model for Warm Forming of Aluminum Sheet [PDF]

open access: yes, 2008
The formability of aluminum sheet can be improved considerably by increasing the temperature.\ud At elevated temperatures, the mechanical response of the material becomes strain rate dependent.\ud To accurately simulate warm forming of aluminum sheet, a ...
Boogaard, A.H. van den   +2 more
core   +1 more source

Linking glacial-interglacial states to multiple equilibria of climate [PDF]

open access: yes, 2018
Glacial-Interglacial cycles are often described as an amplified global response of the climate to perturbations in solar radiation caused by oscillations of Earth's orbit. However, it remains unclear whether internal feedbacks are large enough to account
Ferreira, David   +3 more
core   +1 more source

Mechanical and forming properties of AA6xxx sheet from room to warm temperatures [PDF]

open access: yes, 2010
The influence of temperature on the mechanical behaviour of the heat treatable Aluminium alloy EN AW-6061 has been investigated with a series of tensile tests.
Boogaard, Ton van den   +4 more
core   +1 more source

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