Phase field modelling of dynamic thermal fracture in the context of irradiation damage
- 310 Downloads
This work presents a continuum mechanics approach to model fracturing processes in brittle materials that are subjected to rapidly applied high-temperature gradients. Such a type of loading typically occurs when a solid is exposed to an intense high-energy particle beam that deposits a large amount of energy into a small sample volume. Given the rapid energy deposition leading to a fast temperature increase, dynamic effects have to be considered. Our existing phase field model for dynamic fracture is thus extended in a way that allows modelling of thermally induced fracture. A finite element scheme is employed to solve the governing partial differential equations numerically. Finally, the functionality of our model is illustrated by two examples.
KeywordsPhase field Thermal fracture Irradiation damage
Unable to display preview. Download preview PDF.
- 10.Kuhn, C.: Numerical and analytical investigation of a phase field model for fracture. Phd thesis, Technische Universität Kaiserslautern (2013)Google Scholar
- 12.Kuhn, C., Müller, R.: A continuum phase field model for fracture. Eng. Fract. Mech. 77(18), 3625–3634 (2010). Computational mechanics in fracture and damage: a special issue in Honor of Prof. GrossGoogle Scholar
- 13.Richter, H., Aiginger, H., Noah Messomo, E.: Simulating transient effects of pulsed beams on beam intercepting devices. Ph.D. thesis, Vienna, Tech. U., Vienna (2011). Presented 14 Oct 2011Google Scholar
- 14.Schlueter, A., Willenbuecher, A., Kuhn, C., Mueller, R.: Phase field approximation of dynamic brittle fracture. Comput. Mech. 54, 1–21 (2014)Google Scholar
- 15.Schmitt R., Kuhn C., Mueller R., Bhattacharya K.: Crystal plasticity and martensitic transformations—a phase field approach. Technische Mechanik 34(1), 23–38 (2014)Google Scholar