Iutam Symposium On Rheology Of Bodies With Defects: Proceedings Of The Iutam Symposium Held In Beijing, China, 2–5 September 1997 (solid Mechanics And Its Applications)

The IUTAM Symposium on Rheology of Bodies with Defects was held in Beijing in September, 1997. It was aimed at the development of Rheology in Solid Mechanics. Rheology is classified in Applied Mechanics Review under fluid mechanics, however, in its broadest content as was envisaged in its earlier days, it covers the whole spectrum of material behavior from elasticity, plasticity, and fluid mechanics to gas dynamics. It was thought of as a branch of continuum mechanics, but emphasized the physical aspects of different materials, and frequently proceeded from basic physical principles. As the temperature rises, the distinction between solid and fluid, and the distinction between their micro-mechanical movements, become blurred. The physical description of such materials and their movements must be based on the thermodynamic principles of state variable theory; the classical division between solid and fluid mechanics disappears. Under the classification adopted by Applied Mechanics Reviews, the subjects dealt with in this symposium come closer to viscoelasticity and viscoplasticity, especially close to the subdivision of creep dealing with creep rupture. The symposium focused at building a bridge between macroscopic and microscopic research on damage and fracture behavior of defective bodies made of metal, polymer, composite and other viscoelastic materials. Two different approaches are presented at the symposium. The first is a continuum damage theory for time-dependent evolution of defects at the macro/meso/microscopic levels. The Rupture Theory of Rheological Materials with Defects....Pages 1-19 Rheological Behavior and Failure Characteristics of Viscoelastic Solids with Defects....Pages 21-32 Simulation of Slow Kinetic Fracture of Gas Emissionable Materials....Pages 33-45 A New Creep Law and its Application to Crack Tip Field Analysis....Pages 47-54 Damage Field Equation and Criterion for Damage Localization....Pages 55-66 Energy Estimates for Piecewise Smooth Rate Type Thermo-viscoelastic Models with Van Der Waals Type Equilibrium Surface....Pages 67-86 Some Remarks on Thermodynamic Theory of Viscous Elastoplastic Media....Pages 87-98 Stochastic Response of Degrading Elastic Systems....Pages 99-108 Experimental Studies on the Evolution of Defect Temperature Field during Deformation of ABS....Pages 109-119 Rheological-thermal Fracture by Laser Beam....Pages 121-132 A Constitutive Model of a Particle Reinforced Viscoelastic Composite Material with Debonded Microvoids....Pages 133-144 Dynamic Debonding Between Fibers and Matrix in Fiber-Reinforced Composites....Pages 145-152 A Model for Shear Stress Relaxation Around a Fiber Break in Unidirectional Composites and Creep Rupture Analysis....Pages 153-165 Studies on Rheological Relation of Materials by Taking into Account the Rate-dependent Evolution of Internal Defects at High Strain Rates....Pages 167-178 Damage Wave Propagation in Elastic-brittle Materials....Pages 179-190 Effect of Initial Flaws in High Cycle Fatigue of SG Cast Iron....Pages 191-203 Study of Crack Development as the Basis for Rheology of Cementitious Materials....Pages 205-222 Rate Sensitive Damage Behavior of Mortar in Compression....Pages 223-234 Coupled Effect of Creep and Stress Relaxation of Soft Clay....Pages 235-240 Prediction of Abrupt Failure of Cracked Rockmass....Pages 241-248 On the Study of Creep Rupture of Structure....Pages 249-266 Development of Non-unilateral Damage Field in Creeping Plates....Pages 267-276 Plastic and Creep Instability of Shells with Initial Imperfections....Pages 277-289 This volume contains the presentations from the IUTAM Symposium on Rheology of Bodies with Defects. The Symposium aimed at building a bridge between macroscopic and microscopic research on damage and fracture behaviour that contribute to the failure of defective bodies made of metal, polymer, composite, even mortar, concrete, clay and rockmass, emphasizing the time effects involved in the process. Besides the usual continuum damage mechanics approach, the thermodynamics of non-equilibrium system approach is also presented, as well as a survey on the study of creep life assessment, especially on polymers. The book is suitable for research engineers and scientists, graduate students in mechanical and material sciences