Static analysis fatigue and fracture of cracked beams on elastic foundation

✍ Scribed by E. Viola; G. Pascale

• Publisher: Elsevier Science
• Year: 1985
• Tongue: English
• Weight: 805 KB
• Volume: 21
• Category: Article
• ISSN: 0013-7944
• DOI: 10.1016/0013-7944(85)90024-4

✦ Synopsis

In this paper an analysis of a long edge-cracked beam resting on elastic foundation and with rotational and translational restraints at the ends is presented. The simplified Euler-Bernoulli beam theory is employed with the cracked section represented as an elastic hinge. By using the Paris-Erdogan crack propagation law, the fatigue life of the cracked beam is represented as a function of the constraints at the ends, the initial depth of the edge-crack, its location along the beam and the stiffness of the elastic foundation. The bending moment redistribution caused by the crack growth is analyzed and graphically illustrated. The retarding effect on the crack growth rate in the case of redundant structures subjected to repeated loading is discussed.