Results 181 to 190 of about 2,132 (197)
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Correlation of tensile properties with plane-strain, limiting dome height
Journal of Applied Metalworking, 1984While no single test can predict the formability of sheet metal under all modes of deformation, the planestrain limiting dome height (LDH0) has been shown to correlate with material performance during stretching. However, because LDH0 values are a relatively new measure of formability, and require specialized equipment to measure, such data are not ...
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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.
Kayali, E. Sabri, Şener, Bora
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International Journal of Material Forming, 2014
Warm forming has some important advantages, the most significant being that forming limit strains increase at elevated temperatures. To quantify this advantage for an AA3003 brazing sheet, forming limit diagrams were determined using warm tooling developed to perform limiting dome height (LDH) experiments together with a digital image correlation (DIC)
Michael J Worswick, Worswick Michael J
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Warm forming has some important advantages, the most significant being that forming limit strains increase at elevated temperatures. To quantify this advantage for an AA3003 brazing sheet, forming limit diagrams were determined using warm tooling developed to perform limiting dome height (LDH) experiments together with a digital image correlation (DIC)
Michael J Worswick, Worswick Michael J
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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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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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Materials Science Forum, 2006
This paper aims to study the effect of stress relieving on Limit Dome Height (LDH) of Ti-TWBs at elevated temperatures. This is achieved by developing a newly constructed heating system. The elevated temperature of the system can be varied and monitored by a separately control panel. All Ti-TWBs were prepared and used to examine the LDHs under elevated
Chi Ping Lai +2 more
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This paper aims to study the effect of stress relieving on Limit Dome Height (LDH) of Ti-TWBs at elevated temperatures. This is achieved by developing a newly constructed heating system. The elevated temperature of the system can be varied and monitored by a separately control panel. All Ti-TWBs were prepared and used to examine the LDHs under elevated
Chi Ping Lai +2 more
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Multiscale and Multidisciplinary Modeling, Experiments and Design
Alankar Alankar +2 more
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Alankar Alankar +2 more
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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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Journal of Applied Mechanics, 1997
By combining the crystalline orientation distribution with a hardening evolution equation, a new elastic/crystalline viscoplastic material model is established. We focus our discussion on looking primarily at the texture effects on the strain localization of limit dome height (LDH) tests which are simulated using our Dynamic-Explicit finite element ...
E. Nakamachi, X. Dong
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By combining the crystalline orientation distribution with a hardening evolution equation, a new elastic/crystalline viscoplastic material model is established. We focus our discussion on looking primarily at the texture effects on the strain localization of limit dome height (LDH) tests which are simulated using our Dynamic-Explicit finite element ...
E. Nakamachi, X. Dong
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Microstructure Evolution in Three FCC Materials During Limited Dome Height Test
2009AA 1050 Aluminium, AISI 304L and AISI 316L austenitic stainless steel were deformed at different strain and strain path. Deformed microstructure in AISI 304L and AISI 316L austenitic stainless steel shows significant amount of deformation twin and Strain Induced Martensite (SIM). AA 1050 Aluminium shows grain interaction between neighbouring grains. In
S. Mishra +3 more
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