Creep in Structures: 4th IUTAM Symposium, Cracow, Poland September 10–14,1990

Front Matter....Pages I-XXIV
Front Matter....Pages 1-1
Applications of Tensor Functions in Creep Mechanics....Pages 3-22
A Unified Mathematical Model for Plasticity and Creep Under Variable-Repeated Loading....Pages 23-28
Anisotropic Creep Modeling for f.c.c. Single Crystals....Pages 29-36
On the Creep-Ratchetting of AlMgSi 0.5 at Elevated Temperature; Experimental Investigations....Pages 37-44
Compressive Creep Tests on Porous Ceramic Notched Specimens....Pages 45-53
Some New Aspects of the Nonlinear Characterization of Creep and Stress Relaxation of Polymers....Pages 55-62
Constitutive Equations of Nonstationery Metal Creep....Pages 63-67
Creep of Metals Under Variable Complex Loadings....Pages 69-76
Theory of Creep and Long-Term Strength of Insotropic Hardening Media....Pages 77-82
A Constitutive Equation for Non-Linear, Compressible Viscoelastic Materials with Fading Memory....Pages 83-90
Transient Creep in Rock Salt Structure....Pages 91-98
A Hybrid Constitutive Model for Cyclic, and Creep Deformation....Pages 99-106
Anisotropic Creep Behaviour Induced by Plastic Deformation....Pages 107-114
The Influence of Deformation History on Creep of Pure Copper....Pages 115-122
Modeling of Recovery of State Using the Viscoplasticity Theory Based on Overstress....Pages 123-130
Some Attempts to Describe Distortional Hardening in Viscoplasticity....Pages 131-138
A Viscoplasticity Theory of Irradiated Materials....Pages 139-146
Diffusional Transformation and Creep in Steels....Pages 147-154
Effects of Slip System and Lattice Rotation on Combined Tension-Torsion Creep of a Directionally Solidified Alloy....Pages 155-162
Nonlinear Constitutive Equations for Creep of Structural Materials....Pages 163-170
Front Matter....Pages 1-1
Intergranular and Transgranular Hardening in Viscoplasticity....Pages 171-178
On the State Equations for Anisotropic Elasto-Visco-Plastic Bodies....Pages 179-185
Effects of Prior Plastic Strain Path Shapes on Creep Behaviour of Incompressible Materials....Pages 187-194
Some Unification of Creep Theories Based on Internal Time Concept....Pages 195-202
Characterization of Nonlinear Viscoelastic Materials for a Special Class of Loading Histories....Pages 203-208
Constitutive Law and Force Recovery for Large Strain Problems....Pages 209-216
Creep of Isotropic and Anisotropic Materials with Different Behaviour in Tension and Compression....Pages 217-220
Front Matter....Pages 221-221
Localization Phenomena in Thermo-Elastoplasticity....Pages 223-235
Mechanical Modeling of Irradiation Creep and its Application to the Analysis of Creep Crack Growth....Pages 237-252
Fatigue Crack Propagation Behavior Under Creep Conditions....Pages 253-268
Creep Life Estimates for Defective Structures....Pages 269-277
Non-Stationary Nucleation of Cavities at Grain Boundaries....Pages 279-285
A Non-Unilateral Damage in Creeping Plates....Pages 287-293
On Microcracking due to Cavitation and Grain Boundary Sliding in Creeping Polycrystals....Pages 295-302
An Assessment Procedure for the High Temperature Response of Structures....Pages 303-311
Creep Continuum Damage Mechanics—Studies of Size Effects and Weldments....Pages 313-322
Crack Growth in Linearly Viscoelastic Media....Pages 323-330
Mixed-Mode Creep and Creep/Fatigue Crack Growth....Pages 331-338
Theoretical, Experimental and Numerical Investigations of Creep Crack Growth....Pages 339-346
Characterization of Creep-Fatigue Failure Process Based on Stochastic Behavior of Small Crack Initiation and Growth....Pages 347-354
Front Matter....Pages 221-221
A New Damage Approach for Creep Crack Growth Prediction....Pages 355-362
Small-Scale and Large-Scale Creep Predictions of Notch Stress and Strain Under Creep Conditions....Pages 363-370
Creep Rupture of Metals Under Tri-Axial State of Stress....Pages 371-378
The Investigation of the Metal Damage at the Creep by the Method of Electrical Resistance Measuring....Pages 379-383
Creep of Concrete During Load-Controlled Experiments....Pages 385-391
Evaluation of Creep Damage in Some Major Components of Steam Turbine....Pages 393-400
Uniaxial Viscoplastic Experiments of Predamaged AISI 316H....Pages 401-408
Creep Rupture in Fibre Bundles with Hardening-Softening Fibre Material....Pages 409-416
Creep-Fatigue Life and Cyclic Constitutive Relation of MAR-M247 Directionally Solidified Superalloy at High Temperature....Pages 417-424
Percolation Models as a Basis of Material Failure....Pages 425-432
Global and Local Approaches to Creep Crack Initiation and Creep Crack Growth....Pages 433-440
The Assessment of Creep-Fatigue Initiation and Crack Growth....Pages 441-450
A Constitutive Model for Creep and Damage in Composite Materials....Pages 451-458
Front Matter....Pages 459-459
Advances in Finite Element Methods for Elasto-Plastic and Creep Analysis....Pages 461-468
Large Displacements and Rotations for Shells of Revolution due to Axisymmetric Elastic, Creep and Plastic Deformation....Pages 469-484
Finite Element Methods in Stress Analysis for Creep....Pages 485-502
Thermal, Mechanical & Creep Behavior of Metal Matrix Composites....Pages 503-517
Problems of Structural Optimization Under Creep Conditions....Pages 519-530
Modelling of Viscoelastic Behaviour of Plates....Pages 531-537
The Verification of the Solution of Large Problems of Discontinuous Creeping Structures....Pages 539-546
Front Matter....Pages 459-459
Creep Analysis in a Large Strain Context by Unified Constitutive Equations....Pages 547-554
The Large Time Increment Method Applied to Cyclic Loadings....Pages 555-562
Some Analytic Results Pertaining to Stress Redistribution in a Class of Structures Undergoing Primary or Secondary Creep....Pages 563-570
On Optimal Design of Disk with Respect to Creep Rupture....Pages 571-577
Prediction of Macroscopic and Local Creep Behavior of Perforated Plates....Pages 579-586
A Viscoplastic Constitutive Relationship and the Finite Element Implementation of Stress/Strain Concentration in Notched Component....Pages 587-594
Creep Buckling of Inelastic Plates....Pages 595-600
Contributions to Robust Methods of Creep Analysis....Pages 601-608
On the Stability of Viscoelastic Beams Under a Stochastic Excitation....Pages 609-614
On the Non-Linear Creep Flow Potential....Pages 615-620
Bending of Orthotropic Viscoelastic Plates with Thermal Effects....Pages 621-628
Stress Concentrations Resulting from Longitudinal Butt-Welds in Piping at Elevated Temperatures....Pages 629-636
Bars of Uniform Strength vs. Optimal with Respects to Ductile Creep Rupture Time....Pages 637-643
A Numerical Method of Nonlinear Viscoelastic Structural Analysis....Pages 645-652
Stability and Bounds on Motion of Viscoelastic Columns with Imperfections and Time-Dependent Forces....Pages 653-658
Nonlinear Instability Induced by Creep....Pages 659-666
Finite Element-Implementation of Creep of Concrete for Thin-Shell Analysis Using Nonlinear Constitutive Relations and Creep Compliance Functions....Pages 667-675
Optimal Design of Annular Plates Against Creep Buckling....Pages 677-684
Dynamic Response of a Viscoelastic Circular Plate on a Viscoelastic Half Space Foundation....Pages 685-692
Low-Stress Level of a Compound Wedge Under Steady Creep....Pages 693-700
Front Matter....Pages 459-459
Creep Instability of Spinning Viscoelastic Rod....Pages 701-708