Finite-deformation irreversible cohesive elements for three-dimensional crack-propagation analysis

✍ Scribed by Ortiz, M. (author);Pandolfi, A. (author)

• Publisher: John Wiley and Sons Ltd
• Year: 1999
• Tongue: English
• Weight: 571 KB
• Volume: 44
• Category: Article
• ISSN: 0029-5981
• DOI: 10.1002/(sici)1097-0207(19990330)44:9<1267::aid-nme486>3.0.co;2-7

✦ Synopsis

We develop a three-dimensional ÿnite-deformation cohesive element and a class of irreversible cohesive laws which enable the accurate and e cient tracking of dynamically growing cracks. The cohesive element governs the separation of the crack anks in accordance with an irreversible cohesive law, eventually leading to the formation of free surfaces, and is compatible with a conventional ÿnite element discretization of the bulk material. The versatility and predictive ability of the method is demonstrated through the simulation of a drop-weight dynamic fracture test similar to those reported by Zehnder and Rosakis. 1 The ability of the method to approximate the experimentally observed crack-tip trajectory is particularly noteworthy. Copyright