Effect of Side Grooves for Three-point Bending Fracture Toughness Specimens : Three-dimensional Elastic-plastic Finite Element Analysis

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概要

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• Elastic-plastic stress states on three-point bending fracture toughness specimens are analyzed by the three-dimensional finite element method. Effect of side grooves on the stress state around the crack tip is discussed on specimens about 30 % side-grooved in U, V, and slit types comparing with a regular flat specimen. Side grooves restrict the plane stress type deformation, which is commonly observed near the side face of a flat specimen. Consequently, over 80-90 % of the thickness of the side-grooved specimens, practically even distributions of the stress intensity factors, plastic zone geometries, crack tip dilatant stresses, and three-dimensional J integrals are achieved.

• 一般社団法人日本機械学会の論文

著者

• Imai Yasufumi

  Department Mechnical Engineering Nagasaki University

• Matake Tomokazu

  Department Of Mechanical Engineering Nagasaki University

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