(New page: =Tomasz Wierzbicki, Ph.D.= === DUCTILE FRACTURE: Theory, Model Identification and Industrial Applications=== The talk will consist of five parts:(i)Historical note,(ii) Development of th...) |
(→Tomasz Wierzbicki, Ph.D.) |
||
Line 3: | Line 3: | ||
=== DUCTILE FRACTURE: Theory, Model Identification and Industrial Applications=== | === DUCTILE FRACTURE: Theory, Model Identification and Industrial Applications=== | ||
− | The talk will consist of five parts:(i)Historical note,(ii) Development of the Modified Mohr-Coulomb Fracture criterion,(iii) Multi-axial fracture tests and calibration,(iv) FE implementation and (v) Applications to the automotive,steel, aluminium and offshore industry. | + | The talk will consist of five parts:(i)Historical note,(ii) Development of the Modified Mohr-Coulomb Fracture criterion,(iii) Multi-axial fracture tests and calibration,(iv) FE implementation and (v) Applications to the automotive, steel, aluminium and offshore industry. |
− | (i) The | + | (i) The development of the concept of ductile fracture is briefly reviwed from the point of view of author's personal experience in working with the industry. |
(ii) Ductile fracture is first formulated under proportional loading for | (ii) Ductile fracture is first formulated under proportional loading for | ||
Line 17: | Line 17: | ||
strength steels and aluminium alloys. | strength steels and aluminium alloys. | ||
− | (iv) The element delition technique in Abaqus is used to | + | (iv) The element delition technique in Abaqus is used to visualize crack paths. Fracture propagation is assumed to consists of a continuing process of crack initiations with the evolving amount of constraint. For a proper formulation of the post-failure behavior of elements, the concept of the material softening is introduced. Such a formulation reduces the mesh size effect and accounts for the mechanics of the process zone near the crack tip. |
− | (v) A driving force of most of the work on ductile fracture | + | (v) A driving force of most of the work on ductile fracture has been several |
− | industrial consortia | + | industrial consortia organized by the author at MIT. Applications to real world fracture problems will be presented along with a comparison between the tests and simulations. |