Automatic Mixed-Mode 3-D Crack Propagation Calculations

23 marzo 2016
23th March
DII - Dipartimento di Ingegneria Industriale
via Sommarive, 9 - 38123 Povo, Trento
+39 0461 282500 - 2503
fax +39 0461 281977

Venue: Department of Industrial Engineering - Girasole room, via Sommarive 9, Povo - Trento, 9:30 - 10:30

  • Guido Dhondt, MTU Aero Engines AG


In recent years, increased loading and low weight requirements have led to the need for automatic crack tracing software. At MTU a purely hexahedral code has been developed in the nineties for Mode-I applications. It has been used extensively for all kinds of components and has proven to be very flexible and reliable. Nevertheless, in transition regions between complex components curved cracks have been observed, necessitating the development of mixed-mode software. Due to the curvature of the crack faces, purely hexahedral meshes are not feasible, and therefore a mixture of hexahedral elements at the crack tip, combined with tetrahedral in the remaining structure has been selected. The intention of the presentation is to compare both methods and to point out the strength and weaknesses of each regarding accuracy, complexity, flexibility and computing time. Furthermore, difficulties arising from the out-of-plane growth of the crack such as the determination of the crack propagation direction are discussed.

The leaflet is on the download box.

application/pdfAutomatic Mixed Mode 3D Seminar(PDF | 274 KB)