Fundamental Study on Electrohydraulic Forming
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概要
- 論文の詳細を見る
There were many studies on electrohydraulic forming in which the relationship between the deformation of metallic meterial and the stored electrical energy was investigated. It is necessary for us, however, to explain the correlation between the deformation resistance for each of these metals and the pressure pulse in order to analyze the deformation characteristic of metals. The experiments were carried out by means of pressure gage (BaTiO_8) on deformation pressure and pressure pulse which were directly related to the deformation, and further, the shock wave energy was calculated. The efficiency of these apparatus was discussed. The clearance between the electrodes creating pressure was short-circuited with several kinds of fine wire, and the influences of the diameters and lengths of wires were presented. Also in the case when there existed water only between the electrodes, the influences of electrode diameters and clearances were presented. It is found from experimental results that cases where the clearance between the electrodes was short-circuited with a fine wire are superior to the case where water was the only pressure source between the electrodes, and the aluminum wire which had a low boiling point metal was effective. The rise time of pressure pulse is about 5μsec and its duration is about 15μsec. Such shapes of pressure pulse do not change up to 1000 joule charged energy. Shorter wires are better than longer wires as pressure sources, while the diameter of wires creating the largest pressure is limited by characteristic of apparatus and the charged energy.
- 一般社団法人日本機械学会の論文
著者
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Oyane Moriya
Faculty Of Engineering Kobe University.
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MASAKI Saizi
Faculty of Industrial Arts, Kyoto Univ. of Industrial Arts and Textile Fibers,
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Masaki Saizi
Faculty Of Engineering Kyoto University
関連論文
- On the Roughening of Free Surface in Deformation Processes
- The Relationship between Lubrication and Surface Condition of Metals Deformed under Compression : 2nd Report, Experimental Study
- The Relationship between Lubrication and Surface Condition of Metals Deformed under Compression
- Surface Crack in Hydrostatic Extrusion of Brittle Metal
- Dynamic Plastic Deformation of Thin Cylindrical Shells under Internal Impulsive Pressure : 1st Report, Theoretical Analysis
- Dynamic Plastic Deformation of Thin Cylindrical Shells under Internal Impulsive Pressure : 2nd Report, Experimental Investigation
- Development of Laws of Similarity for Electrospark Forming
- Improvement of Formability of Metals in Extrusion by Means of Two-Stage Extrusion
- The Effect of Deformation Speed on Friction and Lubrication in Cold Forging
- Back Pressure Extrusion of Brittle Metals and Metallic Powder
- Criteria of Ductile Fracture Strain
- Fundamental Study on Electrohydraulic Forming
- Fundamental Study on Electrohydraulic Forming : III. The Effect of Diameter of Fuse Wire and Circuit Inductance on Pressure Pulse
- Thoery of Plasticity for Porous Metals
- Fundamental Study of Electrospark Forming : Deformation of Cylindrical Shell and Circular Diaphragm
- Fundamental Study on Electrohydraulic Forming : II. The Effect of Kinds of Fuse Wires and Circuit Inductance on Pressure Pulse
- Cold Back-Pressure Extrusion of Aluminium Powder
- Central Cracking of Extruded Product of Brittle Metal in Hydrostatic Extrusion : 2nd Report, Analysis
- Central Cracking of Extruded Product of Brittle Metal in Hydrostatic Extrusion : 1st Report, Experiment