Dynamic Failure of Materials: Theory, Experiments and Numerics

ISBN-13: 9781851666652 / Angielski / Twarda / 1991 / 397 str.

Hans Peter Rossmanith; A. J. Rosakis; Ares J. Rosakis

Opis

The rapid pace of current developments in the theoretical, analytical, numerical and experimental fields of dynamic failure of materials called for an international seminar of workshop style aimed at improving the finding and understanding of solutions to the basic physical processes involved in dynamic failure. The Vienna Seminar DFM-l was held at the Technical University Vienna in the historic administration building in the city center under the auspices of the university. More than 30 international experts from all over the world followed the invitation to participate at this seminar. High in the list of priorities was the common desire for ample time for discussions after each technical presenta tion, a fact and a chance frequently made overextensive use of during the seminar. Thus, opportunity was given to the seminar participants to present and expose ideas and results of their original research work, either terminated, ongoing, proposed or conceived and intended, to an international forum of experts for critical discussions, evaluation and appraisal. The technical program included dynamic failure of polymers and steel, numerical modelling of fracture processes, experimental techniques and analytical/numerical investigation of crack/wave interaction problems. The scope of the contributions stretched from implementation of advanced mathematical techniques in the theoretical developments to most direct applications in various fields of engineering practice. Papers published in this volume represent revised, updated and expanded versions of the seminar contributions."

Spis treści

Analysis of high velocity impact testing.- Cleavage fracture in steel specimens under short stress pulse loading.- Crack propagation and arrest study at stress pulse loading.- Dynamic crack propagation and crack arrest in a structural steel: Comparison between isothermal and thermal shock tests.- On the practical significance of crack arrest.- Influence of grain size on triaxial dynamic behavior of alumina.- High speed double torsion testing of pipe grade polyethylenes: — Experiment and analysis.- Dynamic fracture toughness of filled polymers using a global energetic criterion.- Dynamic failure mechanisms in gallstones using lithotripsy.- Stress wave focusing induced fracture — A photoelastic study.- Nonlinear effects of fracture of ceramics in stress waves.- Photomechanics of surface-crack — wave interaction phenomena.- Measurement of transient crack tip fields using the Coherent Gradient Sensor.- FE-Investigation on caustics for measuring impact fracture toughness.- Some experiments on measurement of dynamic stress intensity factor of fast propagating cracks.- Experimental and numerical studies on fast curving fracture.- Study of dynamic crack propagation in polystyrene by the method of dynamic caustics.- Recent advances in data processing from caustics.- The transient analysis of a subsurface inclined crack subjected to stress wave loading.- Numerical modeling of dynamic failure of elastic-plastic materials by Godunov’s method.- Transient viscoelastodynamic response of cracked bodies.- Dislocation generation by dynamically-loaded cracks and its effects on fracture characterization.- Dynamic interaction between dislocation and mode-III crack.- Micromechanics of craze-aided ductility of rubber-toughened plastics under dynamic loading.- Microscopic fracture modes of brittle polymers in dynamic crack propagation.- Simulation of a fast Dugdale crack motion with varying velocity.- Modelling dynamic fracture in polymers using a local modulus concept.- Author Index.