Results 181 to 190 of about 14,068 (235)
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Numerical and Experimental Investigation of Friction Effect in Limiting Dome Height Test
Journal of Testing and Evaluation, 2016Abstract In this study, the effect of friction in limiting dome height test was investigated numerically and experimentally. Ultra-low-carbon galvanized steel sheets were used as a test material. The thickness of the material was 1.2 mm.
Şener, Bora, Kayali, E. Sabri
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Prediction of Limit Strains in Limiting Dome Height Formability Test
AIP Conference Proceedings, 2007In this paper, the Marciniak‐Kunczynski (MK) method is combined with the Storen‐Rice analysis in order to improve accuracy of the predicted limit strains in Limiting Dome Height (LDH) test. FEM simulation is carried out by means of a commercial FEM code (ABAQUS) and FEM results are postprocessed by using an improved MK code.
Amir A. Zadpoor +2 more
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Effects of clamp force in Limiting Dome Height (LDH) Test
Journal of Materials Shaping Technology, 1991The effects of specimen width and blankholder (clamp) force on LDH were investigated in tests with bare DDQ SK steel strip. Specimen width ranged from 109 to 143 mm (4.29 to 5.63 in.). The die set comprised a ball-bearing ball punch of 101.6 mm (4 in.) diameter and blankholders with a triangular clamping bead. Clamp forces ranged from 100 to 500 kN (11.
John A. Schey, Rolf F. Fischer
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The Limiting Dome Height Tests and Formability of Magnesium Alloy Sheet AZ31B
Applied Mechanics and Materials, 2013The assembly of the limiting dome height tests is developed to evaluate the formability of the magnesium alloy sheet AZ31B. The influence of forming conditions on the formability of AZ31B sheet is investigated by limiting dome height tests. The limiting bulging coefficient is used to represent the formability of AZ31B sheet in the tests.
Xin Wu Ma, Fang Wang, Guo Qun Zhao
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The Limiting Dome Height Test for Assessing the Formability of Sheet Steel
SAE Technical Paper Series, 1985<div class="htmlview paragraph">The Limiting Dome Height (LDH) test has attracted much interest as a simulative tool for predicting press performance of materials. However, problems of test reproducibility have been observed. An experimental evaluation has been performed to determine the possible source or sources of these problems.
D. J. Meuleman +2 more
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Materials Today: Proceedings, 2017
Abstract Stretch forming is an important sheet metal forming process in which thin sheets are plastically deformed into desired shapes. All structural steels undergo changes in their properties when subjected to cryogenic temperatures and may become brittle at lower temperatures, but Austenitic stainless steel (ASS 304 grade) having FCC structure is ...
Chadaram Srinivasu +4 more
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Abstract Stretch forming is an important sheet metal forming process in which thin sheets are plastically deformed into desired shapes. All structural steels undergo changes in their properties when subjected to cryogenic temperatures and may become brittle at lower temperatures, but Austenitic stainless steel (ASS 304 grade) having FCC structure is ...
Chadaram Srinivasu +4 more
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2020
The objective of this present work is to the comparison of simulation and experimental results on the formability behaviour of dissimilar aluminium alloys such as AA6082-O, AA5083-O, AA5052-H32 and AA6082-T6 using limiting dome height (LDH) test. This research work is divided into four main parts.
Praveen Kumar, Satpal Sharma
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The objective of this present work is to the comparison of simulation and experimental results on the formability behaviour of dissimilar aluminium alloys such as AA6082-O, AA5083-O, AA5052-H32 and AA6082-T6 using limiting dome height (LDH) test. This research work is divided into four main parts.
Praveen Kumar, Satpal Sharma
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Evaluating the GMR-Limiting Dome Height Test as a new measure of press formability near plane strain
Journal of Applied Metalworking, 1978A number of tests have been proposed as predictors of press shop formability. The most common of these are the Olsen cup, tensile, and hardness tests. However, none of these tests are very successful. Recently, A.K. Ghosh proposed the Limiting Dome Height test (LDH) to predict formability since this test modifies specimens to produce the same strain ...
Robert A. Ayres +2 more
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Multiscale and Multidisciplinary Modeling, Experiments and Design
Shahin Ahmad +3 more
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Shahin Ahmad +3 more
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Effect of reverse dome stretching on dome height and forming limits of sheet materials
Materials Science and Engineering: A, 2005Reverse bending and stretching of sheet materials is often employed in press forming of complex automotive components. In this work, hemispherical dome stretching tests were followed by reverse dome tests on automotive aluminum sheet specimens to assess the influence of the strain and shape on dome height at neck formation and limit strains.
M. Jain, J. Allin, X. Duan, D.J. Lloyd
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