The optimal design for fatigue life using biological method

D. Peng, R. Jones

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

Abstract

A methodology for structural shape optimization is presented. It can be applied to problems with fatigue life, as the design objective,. Initial cracks, of a user specified size, are automatically generated perpendicular to a (user) specified boundary. The software allows the rapid and accurate calculation of the fatigue life associated with each of the (user) specified cracks by using the new and simple method developed in [2] for estimating the stress intensity factor for cracks at a notch. These quantities are then used to determine the optimum shape. This method is ideal for use in structural optimisation as accurate results are obtained without the need to explicitly model a crack, i.e. it is only necessary to model the uncracked structure. This work confirms earlier findings that a stress optimized structure does not necessarily give the longest fatigue life. The importance of non destructive inspection (NDI) and the role it plays in determining optimum structural geometries is also revealed.

Original languageEnglish
Title of host publication11th International Conference on Fracture 2005, ICF11
Pages2084-2089
Number of pages6
Publication statusPublished - 1 Dec 2005
Event11th International Conference on Fracture 2005, ICF11 - Turin, Italy
Duration: 20 Mar 200525 Mar 2005

Publication series

Name11th International Conference on Fracture 2005, ICF11
Volume3

Conference

Conference11th International Conference on Fracture 2005, ICF11
CountryItaly
CityTurin
Period20/03/0525/03/05

Cite this

Peng, D., & Jones, R. (2005). The optimal design for fatigue life using biological method. In 11th International Conference on Fracture 2005, ICF11 (pp. 2084-2089). (11th International Conference on Fracture 2005, ICF11; Vol. 3).