BEASY Software and Services



The safe life approach is conventionally used in the rotorcraft industry to determine the fatigue life of drive system or other fatigue critical components. However, the current trend is to place an increasing emphasis on the fatigue life by damage tolerance/crack growth analysis. While the fatigue crack growth analysis of many components can be performed with simplified programs with built-in geometries/sections, a full 3D crack fatigue growth analysis is needed in case of components (especially the rotorcraft drive system components) with complex geometries and complex loading. The life or the remaining life (for in-service cracked components) can be established with 3D crack growth analysis. Inspection intervals can also be established for cracked in-service components for safe operation. Such analyses require not only the crack length vs. flight hours but also the crack path to establish critical crack lengths. Software capable of performing the automatic fatigue crack growth analysis is required for efficiency and expeditiousness of the analytical process. The BEASY boundary element analysis program developed by CMI (Computational Mechanics Inc.) is used by Boeing Rotorcraft for performing 3D crack growth analysis. This paper presents and discusses practical aspects of the automatic fatigue crack growth analysis of a drive system gear. The issues involved in automatically predicting the crack growth path and growing the crack incrementally are discussed including new features and additions implemented in BEASY software.

To get the full publication please Open the Publication Below

Open Here

Request Information

Follow Us!

Newsletter Sign-up

Areas of Interest

Please note that by submitting this form you are giving us permission to store the details you have entered above in our database system.  We will use this data to add you to our mailing list to receive the monthly BEASY e-newsletters you have selected. You can remove yourself from the e-newsletter mailing list at anytime by choosing the opt-out feature on the e-newsletter. We may also send you literature about BEASY via postal mailings and any other BEASY information and announcements which we think you will find of interest. We will not pass your details on to any 3rd party organisations.