Overview

These volumes contain contributions from a conference on the themes of measurement and prediction of residual stress in railroad rails. Volume I contains elements of practical railway experience, laboratory tests, including experimental stress analysis, and theoretical evaluations of residual stress, crack propagation, and rail fracture. Theoretical and numerical analyses are presented in Volume II, in the hope that models based on solid mechanics can correlate the experimental stress measurements and lead to better understanding of the effects of residual stress upon crack propagation, fracture, and ultimately the economics of rail in the modern railroad environment.

Full Product Details

Author:   O. Orringer ,  J. Orkisz ,  Zdzislaw Swiderski
Publisher:   Springer
Imprint:   Springer
Edition:   1993 ed.
Volume:   12-13
Dimensions:   Width: 15.50cm , Height: 1.40cm , Length: 23.50cm
Weight:   1.140kg
ISBN:  

9780792316510

ISBN 10:   0792316517
Pages:   447
Publication Date:   31 March 1992
Audience:   College/higher education ,  Professional and scholarly ,  Postgraduate, Research & Scholarly ,  Professional & Vocational
Format:   Hardback
Publisher's Status:   Active
Availability:   Out of print, replaced by POD  
We will order this item for you from a manufatured on demand supplier.

Table of Contents

of Volume II.- 1. Residual stresses and web fracture in roller-straightened rail.- 1.1 Introduction.- 1.2 Determination of residual stresses.- 1.3 Effects of residual stresses on web fracture.- 1.4 A saw-cutting test to quantify severity of residual stresses.- 1.5 Stress transients and short cracks at rail ends.- 1.6 Creation of residual stresses: analyzing the roller-straightener.- 1.7 Conclusions.- Acknowledgements.- References.- 2. Some factors influencing the transition from shelling to detail fracture.- 2.1 Introduction.- 2.2 Crack path stability of statically growing shells.- 2.3 Dynamic crack curving.- 2.4 Calculation of shell growth rates.- 2.5 Conclusions.- Acknowledgement.- References.- 3. Analysis of crack front propagation in contact.- 3.1 Introduction.- 3.2 Existing theories and research objective.- 3.3 Two-dimensional model.- 3.4 Method of solution.- 3.5 Results.- 3.6 Conclusions.- 3.7 Appendix — matrix equations for contact solution.- References.- 4. Effect of load sequence on fatigue life of rail steel.- 4.1 Introduction.- 4.2 Strain energy density criterion.- 4.3 Material characterization.- 4.4 Load spectra.- 4.5 Finite element analysis.- 4.6 Discussion and conclusions.- References.- 5. On residual stresses in corrugated rails and wheel/rail interaction.- 5.1 Introduction.- 5.2 Simple models of wheel/rail interaction.- 5.3 Simulation of rolling contact process.- 5.4 Measurements of residual stresses in corrugated rail.- 5.5 Final remarks.- References.- 6. Prediction of actual residual stresses by constrained minimization of energy.- 6.1 Introduction.- 6.2 Mechanical models.- 6.3 Numerical models.- 6.4 Optimization strategy.- 6.5 Numerical results.- 6.6 Concluding remarks.- References.- 7. Hybrid finite element method for estimation of actual residualstresses.- 7.1 Introduction.- 7.2 Numerical approach.- 7.3 Performance tests.- 7.4 Example analysis of a rail.- 7.5 Discussion and conclusions.- References.- 8. Application of the constrained minimization method to the prediction of residual stresses in actual rail sections.- 8.1 Introduction.- 8.2 Background.- 8.3 Analysis method.- 8.4 Results.- 8.5 Discussion and conclusions.- References.- 9. Estimation of actual residual stresses by the boundary element method.- 9.1 Introduction.- 9.2 Estimation of residual stresses by the BEM.- 9.3 Results of numerical examples.- 9.4 Conclusions.- References.- 10. A new feasible directions method in nonlinear optimization.- 10.1 Introduction.- 10.2 New algorithm.- 10.3 Tests and comparisons.- 10.4 Concluding remarks.- References.- 11. Enhancement of experimental results by constrained minimization.- 11.1 Introduction.- 11.2 General formulation of the problem.- 11.3 Tests of enhancement concept.- 11.4 Conclusion.- References.- 12. On future development of the constrained energy minimization method.- 12.1 Introduction.- 12.2 Continuation of current work.- 12.3 New topics.- References.

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