Non-Linear Fracture

From time to time the International Journal of Fracture has presented special matters thought to be of interest to its readers. In previous issues, for example, Dr. H.W. Liu as Guest Editor assembled a series of review papers dealing with fatigue processes and characteristics in metals and non-metals (December 1980 and April 1981). Five years ago Guest Editor W.G. Knauss collected works dealing with dynamic fracture (March and April 1985). Continuing this policy, Dr. W.G. Knauss and Dr. A.J. Rosakis of the California Institute of Technology as Guest Editors have now organized an extensive set of papers concerning the influence of non-linear effects upon the mechanics of the fracture process. This collection is based upon contributions to a relatively small international Symposium on Non Linear Fracture Mechanics held under the auspices of the International Union of Theoretical and Applied Mechanics (IUTAM) and convened at the California Institute of Technology in March 1988. It should be noted that although the description of non-linear fracture inherently encompasses a strong material science component, this aspect is not heavily emphasized in the ensuing papers due to the intentional focus upon mechanics. Volume 42 of the International Journal of Fracture will therefore, in successive issues, deal respectively with topics in (1) Damage, (2) Interfaces and Creep, (3) Time Dependence, and (4) Continuum Plasticity. On behalf of the editors and publishers, I wish to express our appreciation to Dr. Knauss, Dr. Rosakis, and their colleagues for their collective efforts.

Klappentext

Selected papers of an IUTAM Symposium

Inhalt

1. Damage.- Finite element analysis of void growth in elastic-plastic materials.- An analysis of decohesion along an imperfect interface.- Mechanics and micromechanisms of fatigue crack growth in brittle solids.- Damage induced constitutive response of a thermoplastic related to composites and adhesive bonding.- Deformation processes in semi-brittle polycrystalline ceramics.- Micro-mechanics of crack initiation.- 2. Interfaces and Creep.- Elasticplastic and asymptotic fields of interface cracks.- Effect of decohesion and sliding on bimaterial crack-tip fields.- Elasticplastic analysis of frictionless contact at interfacial crack tips.- Effect of microstructure degradation on creep crack growth.- Influence of damage on crack-tip fields under small-scale-creep conditions.- Creep crack growth under small-scale-creep conditions.- On some path independent integrals and their use in fracture of nonlinear viscoelastic media.- 3. Time Dependence.- Dynamic measurement of the J integral in ductile metals: comparison of experimental and numerical techniques.- Plastic zone formation around an arresting crack.- Viscoplastic-dynamic crack propagation: experimental and analysis research for crack arrest applications in engineering structures.- Observations on high strain rate crack growth based on a strip yield model.- Computer demonstration of crack growth.- Some basic issues in dynamic crack growth in elasticplastic solids.- 4. Continuum Plasticity.- Crack tip fields in ductile crystals.- Perturbation solution for near-tip fields of cracks growing in elastic perfectly-plastic compressible materials.- The influence of crack size on the fracture behaviour of short cracks.- Reduced crack growth ductility due to asymmetric configurations.- Crack tip parameters andelasticplastic fracture of metals.- A study on the ductile fracture of Al-alloys 7075 and 2017.