Analysis of Thin-Walled Beam with Crack of Random Location and Size

作者：Kuna**** Chalitphan^*; Singh Mahendra P; Patil Mayuresh J; Kapania Rakesh K

来源：AIAA Journal, 2012, 50(6): 1265-1280.

DOI：10.2514/1.J051244

This paper presents the analysis of a thin-walled beam with a longitudinal crack of random location and size. The research objective is to understand the response characteristics of such a damaged beam, with the ultimate goal of examining the growth of a crack under random loading. This initial study is expected to guide the future analysis of an aircraft wing with uncertain damage characteristics. An analytical method is presented to obtain the response of a simple thin-walled beam of a closed cross section with a longitudinal crack of finite size. For random location and size of the crack, the methodology for the first-order reliability analysis with analytically calculated response is described. The numerical results of the reliability analysis of the beam for the reliability defined as the nonexceedance of a limit state are presented.

• 出版日期2012-6