A directional modification of the Levkovitch-Svendsen cross-hardening model based on the stress deviator

Publikation: Beiträge in ZeitschriftenZeitschriftenaufsätzeForschungbegutachtet

Authors

Abstract In the original Levkovitch-Svendsen cross-hardening model parallel and orthogonal projections required for the yield surface evolution with respective dynamic and latent hardening effects are associated with the unit plastic flow direction np=Ėp/|Ėp|. This work gives a detailed investigation regarding the consequences and proposes the use of the so-called radial direction ns=[S-X]/|S-X| instead where S=dev(σ). It is shown that for an initially plastically anisotropic material under load paths with proportional stresses the original model brings a continuous directional change in the plastic strains. Eventually, even if the dynamic hardening component is bypassed, the material model predicts additional strengthening in loading direction due to latent hardening. In this undesired response, the broken coaxiality of the stress deviator and plastic strain rate tensor with initial anisotropy is the cause. This entanglement of isotropic/kinematic hardening and latent hardening creates difficulties - especially in the parameter identification even for the simplest uniaxial loading. The introduced modification to the model remedies this undesired feature and, hence, makes it possible to isolate the hardening sources during parameter identification stage. The discussions are supported by analytically and numerically derived yield loci for various scenarios. Our analytical studies allow definition of critical material parameter limits for the latent hardening parameter sl in terms of the initial anisotropy and the constant stress deviator ratio.

OriginalspracheEnglisch
Aufsatznummer2391
ZeitschriftMechanics of Materials
Jahrgang86
Seiten (von - bis)21-30
Anzahl der Seiten10
ISSN0167-6636
DOIs
PublikationsstatusErschienen - 07.2015
Extern publiziertJa

    Fachgebiete

  • Induced anisotropy, Initial anisotropy, Latent hardening, Levkovitch-Svendsen model, Material modeling, Plasticity
  • Ingenieurwissenschaften

DOI

Zuletzt angesehen

Publikationen

  1. Lufthansa Cargo´s alliance strategy: Spinning a web of stable relations
  2. Introduction: Toward a business administration for the 21st century
  3. Holland’s secondary constructs of vocational interests and career choice readiness of secondary students
  4. The efficiency of German public theaters: a stochastic frontier analysis approach
  5. On the frontiers of collaboration and conflict: how context influences the success of collaboration
  6. Ultimate Biodegradation and Elimination of Antibiotics in Inherent Tests
  7. Concatenated Commons and Operational Aesthetics
  8. Participation as a Mode of Conflict
  9. Emergency Politics After Globalization
  10. King of Hearts
  11. Waving goodbye to conflict of laws? Recent developments in European Union consumer law
  12. Effect of Deformation Speed on Stress Corrosion and Fracture Toughness of Extruded Mg10Dy and Mg10Dy1Nd Using C-Ring Tests
  13. Mathematische Kompetenz bei Erwachsenen
  14. The Attitude-Behavior Hypothesis and Green Purchasing Behavior
  15. Preference for violent electronic games and aggressive behavior among children
  16. Relationaler Realismus?
  17. Goal Orientation and Planfulness
  18. Business Ideologies and Perceived Breach of Contract During Downsizing
  19. Foundations of Management & Entrepreneurship
  20. Regulierung des Irregulären
  21. Zur Regulierungsdynamik des Prüfungsausschusses
  22. Design und Evaluation von interaktiven webbasierten Bruchrechenaufgaben
  23. Im Zeichen des Zweifel(n)s. Madame Realism
  24. Advances in manufacturing processes for magnesium alloys
  25. Perspective as Practice. Renaissance Cultures of Optics, (About the development of optics and perspective between the fifteenth and seventeenth centuries) (TECHNE 1) Dupré, Sven (ed.): Brepols, Turnhout 2019
  26. Die Praxis der Citizien-Effektivierung
  27. Multidiskursive Organisationen
  28. The March of History
  29. Artificial intelligence, systemic risks, and sustainability
  30. Blinder Fleck im deutschen Nachhaltigkeitsdiskurs ?
  31. Moving beyond “the” business case: How to make corporate sustainability work
  32. Zur Indexierung des Rundfunkbeitrags in der digitalen Transformation
  33. Orthopädische Biomechanik
  34. Inklusionsorientierte Lehrkräftebildung an der Leuphana Universität Lüneburg - Entwicklung und Implementation von Basisqualifikation und Profilstudium