Design using elastic-plastic fracture mechanics

✍ Scribed by J. D. G. Sumpter; C. E. Turner

• Book ID: 104616235
• Publisher: Springer Netherlands
• Year: 1976
• Tongue: English
• Weight: 670 KB
• Volume: 12
• Category: Article
• ISSN: 1573-2673
• DOI: 10.1007/bf00034624

✦ Synopsis

A B S T R A C T Current usage of COD and proposed usage of J in the design of structures experiencing significant plasticity are examined in the light of data from test piece geometries in which uncontained yielding occurs ahead of the crack tip, at general yield. This behaviour is contrasted with several 2D structural models of cracks at holes in plates or in thick walled cylinders. In the structural situations, plasticity ahead of the crack is normally contained by an outer elastic field and in these circumstances estimates of J based on LEFM with plastic zone correction are adequate. Only when plasticity ahead of the crack is uncontained, as for buried or part through cracks with shallow remaining ligaments, is a plasticity estimate of J necessary.