저자명 J.H. Song H. Huh 
Journal Trans. of KSME(A) 
Volume 30 
Number
page 670-677 
Year 2006 
Vacuum interrupters are used in various switch-gear components such as circuit breakers, distribution switches, contactors. The electrodes of a vacuum interrupter are manufactured of sinter-forged Cu-Cr material for good electrical and mechanical characteristics. Since the closing velocity is 1~2m/s and impact deformation of the electrode depends on the strain-rate at the given velocity, the dynamic material property of the sinter-forged Cu-Cr alloy is important to design the vacuum interrupter reliably and to identify the impact characteristics of a vacuum interrupter accurately. This paper is concerned with the dynamic material properties of sinter-forged Cu-Cr alloy for various strain rates. The amount of chrome is varied from 10 wt% to 30 wt% in order to investigate the influence of the chrome content on the dynamic material property. The high speed tensile test machine is utilized in order to identify the dynamic property of the Cu-Cr alloy at the intermediate strain-rate and the split Hopkinson pressure bar is used at the high strain-rate. Experimental results from both the quasi-static and the high strain-rate up to the 5000 /sec are interpolated with respect to the amount of chrome in order to construct the Johnson-Cook and the modified Johnson-Cook model as the constitutive relation that should be applied to numerical simulation of the impact behavior of electrodes.
번호 제목 저자명 날짜 조회 수
25 High Speed Tensile Test of Steel Sheets for an Auto-body at the Intermediate Strain Rate file Lim, J.H. Kim, S.B. K...  2006.01.07 4229
24 Evaluation of the Finite Element Modeling of Spot-Welded Region for Crash Analysis file J.H. Song H. Huh H.G....  2006.03.15 4326
23 A Study on the Strain-Rate Sensitivity According to the Temperature for Steel Sheet of an Auto-Body file H.J. Lee J.H. Song S....  2006.05.02 4212
22 Finite Element Analysis of the Hydro-mechanical Punching Process J. H. Yoon H. Huh S. ...  2006.06.12 5553
21 Comparative Crashworthiness Assessment of the ULSAB-AVC model with Advance High Strength Steel and with Low strength steel file J. H. Yoon H. Huh S. ...  2006.06.12 5007
» Dynamic Material Property of the Sinter-Forged Cu-Cr Alloys with the Variation of Chrome Content file J.H. Song H. Huh  2006.08.02 6754
19 Stress-Based Springback Reduction of an AHSS Front Side Member file J. H. Song S. H. Kim ...  2006.08.30 5742
18 Crash Analysis of the ULSAB-AVC Model with Considering Forming Effects file H. Huh J. H. Yoon Y. ...  2006.12.11 5458
17 Dynamic Tensile Characteristics of the High Strength Steel Sheet for an Auto-body file S. B. Kim H. Huh C. L...  2007.01.09 5505
16 Light-weight Design with a Simplified Center-pillar Model for Improved Crashworthiness file Gihyun Bae Hoon Huh J...  2007.01.09 6051
15 Dynamic Constitutive Equations of Auto-body Steel Sheets with the Variation of Temperature (I)-Dynamic Material Characteristics with the Variation of Temperature file H. J. Lee J. H. Song ...  2007.01.09 6027
14 Dynamic Constitutive Equations of Auto-body Steel Sheets with the Variation of Temperature (Ⅱ) –Flow Stress Constitutive Equation– file H. J. Lee J. H. Song ...  2007.01.09 5972
13 3-D Finite Element Modeling of Fiber Reinforced Rubber Composites using a Rebar Element file S.H. Jeong J.H. Song ...  2007.01.10 7099
12 Finite Element Inverse Analysis of the Deep Drawing Process Considering Bending History file Jeehyang Huh Jonghuh ...  2007.12.21 6051
11 Microscopic Investigation of the Strain Rate Hardening for Polycrystalline Metals file J. H. Yoon H. Huh C. ...  2008.03.10 6749
10 Development ofAl Crash Box for High Crashworthiness Enhancement file J. S. Yoo S. B. Kim M...  2008.12.15 6238
9 Forming Limit Diagram of DP590 considering the Strain Rate [1] [1] file S. B. Kim K. H. Ahn J...  2010.02.23 7750
8 Construction of Modified Yield Loci with Respect to the Strain Rates using Hill48 Quadratic Yield Function file C. S. Lee G. H. Bae S...  2010.03.08 6192
7 Quasi-static and Dynamic Deformation Behavior of STS304- and Ta-fiber-reinforced Zr-based Amorphous Matrix Composites Fabricated by Liquid Pressing Precess file Yongjin Kim Sang Yong...  2010.07.29 9927
6 Analytical study of the effect of material properties on the formability of sheet metals based on the M-K model file Yanshan Lou Seokbong ...  2010.11.12 6539