Fracture Phenomena in Nature and Technology

This book contains contributions presented at the IUTAM Symposium "Fracture Phenomena in Nature and Technology" held in Brescia, Italy, 1-5 July, 2012.The objective of the Symposium was fracture research, interpreted broadly to include new engineering and structural mechanics treatments of damage development and crack growth and also large-scale failure processes as exemplified by earthquake or landslide failures, ice shelf break-up and hydraulic fracturing (natural or for resource extraction or CO2 sequestration), as well as small-scale rupture phenomena in materials physics including, e.g. inception of shear banding, void growth, adhesion and decohesion in contact and friction, crystal dislocation processes and atomic/electronic scale treatment of brittle crack tips and fundamental cohesive properties. Special emphasis was given to multiscale fracture description and new scale-bridging formulations capable to substantiate recent experiments and tailored to become the basis for innovative computational algorithms.

Cutting-edge contributions in fracture research keep the reader up to date Accomplished scientists address crucial issues on fracturephenomena in nature and technology Questions that need to be answered in a broad class of engineering and structural mechanics areas are posed Includes supplementary material: sn.pub/extras

Inhalt

Foreword.- Modeling fracture by material-point erosion.- Crack front perturbations revisited.- Localisation near defects and filtering of flexural waves in structured plates.- Fracture process in cortical bone: X-FEM analysis of microstructured models.- Minimum theorems in 3D incremental linear elastic fracture mechanics.- Crack patterns obtained by unidirectional drying of a colloidal suspension in a capillary tube: experiments and numerical simulations using a two-dimensional variational approach.- Damage mechanisms in the dynamic fracture of nominally brittle polymers.- Tight sedimentary covers for CO sequestration.- Calibration of brittle fracture models by sharp indenters and inverse analysis.- Statistics of ductile fracture surfaces: the effect of material parameters.- Efficient pseudo-spectral solvers for the PKN model of hydrofracturing.- A solution to the parameter-identification conundrum: multi-scale interaction potentials.- Remarks on application of different variables for the PKN model of hydrofracturing: various fluid-flow regimes.- Prediction of grain boundary stress fields and micro crack initiation induced by slip band impingement.- Modeling the heterogeneous effects of retained austenite on the behavior of martensitic high strength steels.- Crack nucleation from a notch in a ductile material under shear dominant loading.