There is a tradition to organize IUTAM Symposia "Creep in Structures" every ten years: the first Symposium was organized by N.J. Hoff in Stan ford (1960), the second one by J. Hult in Goteborg (1970), and the third one by A.R.S. Ponter in Leicester (1980). The fourth Symposium in Cracow, September 1990, gathered 123 par ticipants from 21 countries and reflected rapid development of the theory, experimental research and structural applications of creep and viscoplas ticity, including damage and rupture. Indeed, the scope of the Sympo sium was broad, maybe even too broad, but it was kept according to the tradition. Probably the chairman of "Creep in Structures V" in the year 2000 (if organized at all) will be forced to confine the scope substantially. Participation in the Symposium was reserved for invited participants, suggested by members of the Scientific Committee. Total number of sug gestions was very large and the response - unexpectedly high. Apart from several papers rejected, as being out of scope, over 100 papers were accepted for presentation. A somewhat unconventional way of presenta tion was introduced to provide ample time for fruitful and well prepared discussions: besides general lectures (30 minutes each), all the remain ing papers were presented as short introductory lectures (10 minutes) followed by a I-hour poster discussion with the authors and then by a general discussion. Such an approach made it possible to present general ideas orally, and then to discuss all the papers through and through.
Author(s): J. Betten (auth.), Professor Dr. hab. Michał Życzkowski (eds.)
Series: International Union of Theoretical and Applied Mechanics
Edition: 1
Publisher: Springer-Verlag Berlin Heidelberg
Year: 1991
Language: English
Pages: 708
Tags: Civil Engineering;Mechanics;Characterization and Evaluation of Materials
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
