板の前方押出し加工のモデル実験
スポンサーリンク
概要
- 論文の詳細を見る
The model experiments of direct extrusion through the wedge-shaped d ies have been executed. The material of the specimen is acetyloid, and four kinds of dies have been adopted, whose dimensions are : die half angle 15°, 10° and 0° and reduction ratio 1/4 and 1/2. The square grid lattice (0.5 mm interval) are traced on the specimen and the photo-plastic isochromatic patterns and grid patterns are taken on the films. The fringe-order of the point on the central line of the vicinity of the die entrance always remains in zero fringe-order and of the difference of the principal strains of the die(15°,1/2, symmetry ) has been measured. The latter vanishes on the above mentioned point. The method of visioplasticity has been applied. By the measurement of the displacement vector of each material point on the grid lines, the strain-rate pattern has been obtained. According to the Levy-Mises plastic equation the pattern of the directions of the principal shearing stress has been calculated. On the other-hand the slip-line field has been obtained in the case of the friction angle 7°. The two patterns are comparatively in good agreement. The analysis of the stress distribution is yet to be made.
- 社団法人日本材料学会の論文
- 1968-11-15
著者
関連論文
- 板の前方押出し加工のモデル実験
- 変形結晶中の超音波の伝搬速度と応力の関係
- 弾性液晶中の波動
- 有理連続体力学とは何だろうか
- 連続物質の分類と系譜 : 有理力学の方法
- 一次元非線型弾性物質中を伝ぱする波の変形
- 伸縮しない剛体線維を持つ弾性複合材料中の波動とその座屈
- 大変形弾塑性構成式の熱力学的誘導
- 結合加工硬化をもつTresca型塑性物質の単純せん断変形
- 加工硬化をもつ塑性構成式の熱力学的考察