OS1901 超弾性固体材料における超音速破壊現象の実験的研究(OS19-1 ゴム材料とゴム製品の力学解析/強度評価1,OS-19 ゴム材料とゴム製品の力学解析/強度評価)

スポンサーリンク

概要

• 論文の詳細を見る

• Rupture speeds (Mach numbers) obtained by ordinary laboratory fracture experiments using monolithic brittle linear elastic materials are by far lower than those predicted by classical theories of mechanics and inferred from seismic inversions. Some seismological recordings even imply the existence of supersonic (supershear) rupture speeds. Here, in order to possibly explain these discrepancies, dynamic mode-I fracture in hyperelastic materials is experimentally investigated. Utilizing a high-speed digital video camera system, rupture (crack) initiation and propagation process is recorded. The preliminary results clearly show that if the magnitude of static crack-parallel stress is relatively large and comparable to that of remote mode-I loading stress, the crack propagates surprisingly straight and, even without the existence of material heterogeneities, the crack front accelerates from sub-Rayleigh to a constant supershear speed to capture the shear wave front generated upon rupture initiation.

• 2011-07-16

著者

• 上西 幸司

  神戸大学

関連論文

• 611 引張軟化則に従うき裂の動的伝播開始条件について(材料・構造部材の動的特性(2),ものづくりにおける基礎研究と先端技術の融合)
• 超弾性的挙動を示すゴム材料における超音速破壊現象の実験的研究
• OS1901 超弾性固体材料における超音速破壊現象の実験的研究(OS19-1 ゴム材料とゴム製品の力学解析/強度評価1,OS-19 ゴム材料とゴム製品の力学解析/強度評価)

スポンサーリンク