Kinetics of damages accumulation and criterion of the limit state of construction materials

Authors

  • D. Pham Igor Sikorsky Kyiv Polytechnic Institute, Kyiv, Ukraine
  • A. Babak Igor Sikorsky Kyiv Polytechnic Institute, Kyiv, Ukraine
  • V. Koval Igor Sikorsky Kyiv Polytechnic Institute, Kyiv, Ukraine

DOI:

https://doi.org/10.20535/2521-1943.2018.82.127123

Keywords:

damage, kinetics of damage accumulation, structural materials, tensile test, criterion of limiting state

Abstract

In this paper, modern methods for estimating the damage parameter of metal structural materials presented in the form of a scalar quantity are analyzed. A model is developed for describing the kinetics of accumulation of scattered lesions and the criterion of the limiting state for the case of simple stretching, based on the modernized approach proposed by N. Bonora. Based on the energy approaches and approaches that take into account the reduction in the elastic modulus of the first kind for structural materials D16T, VT22, Steel 45, 30HGSA, 12X18H10T, 07H16N6, 15HCND, 18X2N4VA, and AMg2, damage accumulation curves were obtained in the case of simple stretching. The proposed model and the criterion were experimentally verified, the error in the calculated and experimental data was estimated.

References

  1. Lebedev, A.A., Chausov, N.Gh., Boghynych, Y.O. and Nedoseka, S.A. (1996), “Complex assessment of material damage during plastic deformation” [Kompleksnaja ocenka povrezhdaemosty materyala pry plastycheskom deformyrovanyy], Problemy prochnosty, vol. 5, pp. 23–30.
  2. Lemetr Zh. (1985), “Continuous damage model, used to calculate the destruction of plastic materials” [Kontynualjnaja modelj povrezhdenyja, yspoljzuemaja dlja rascheta razrushenyja plastycheskykh materyalov], Teoretycheskye osnovy, vol. 107, pp. 90-97.
  3. Lemaitre, J. (1987), “Damage measurements. Engineering Fracture Mechanics”, France.
  4. Luo, A.C., Yanghy, M. and Ray, H. (1994), “A large anisotropic damage theory based on an incremental complementary energy equivalence model”, vol.70, pp. 19–34.
  5. Chow, C. and Wang, J. (1987), “An anisotropic theory of elasticity for continuum damage mechanics”, International Journal of Fracture, vol. 33, pp. 3–16.
  6. Dzjuba, V.S. (1984), “Thermodynamic approach to the evaluation of damages of reinforced plastics” [Termodynamycheskyj pokhod k ocenke povrezhdaemosty armyrovanykh plastykov], Instytut problem prochnosty, AN URSR. p. 56.
  7. Аbu-farsakh, S. A. and Abed, F. H. (1999), “Macromechanical Damage Model of Fibrous Laminated Composites”, Applied Composite Materials, vol.6, pp. 99–119.
  8. Bobyr, F. H., Ghrabovsjkyj, A. P. and Tymoshenko, O. V. (2004), " A method of determining the kinetics of material destruction in the process of their elastic-plastic deformation " [Sposib vyznachennja kinetyky rujnuvannja materialiv v procesi jikh pruzhno-plastychnogho deformuvannja], vol. 3
  9. Lemaitre, J., Desmorat, R. and Sauzay, M. (2000), "Anisotropic damage law of evolution", Eur. J. Mech. A/Solids, vol.19, pp. 187–208.
  10. Bonora, N., Gentile, D. and Pirondi, A. (2004), "Identification of the Parameters of a Non-Linear Continuum Damage Mechanics Model for ductile Failure in Metals", J. Of Strain Analysis, vol.39 pp. 639–651.
  11. Bonora, N. A. (2017), "Strain capacity assessment of API X65 steel using damage mechanics", Frattura ed Integrita Strutturale, vol. 11, pp. 315-327.
  12. Kachanov, L. M. (1958), "On Creep Rupture Time" Proc. Acad. Sci., USSR vol. 8, pp. 26–31.
  13. Rabotnov, Y. N (1966), "Creep in Structural Elements" – Moscow: Nauka.

Downloads

Published

2018-05-01

How to Cite

[1]
D. Pham, A. Babak, and V. Koval, “Kinetics of damages accumulation and criterion of the limit state of construction materials”, Mech. Adv. Technol., no. 1(82), pp. 131–138, May 2018.

Issue

No. 1(82) (2018)

Section

Original study

License

Copyright (c) 2020 Mechanics and Advanced Technologies

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

The ownership of copyright remains with the Authors.
 
Authors may use their own material in other publications provided that the Journal is acknowledged as the original place of publication and National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute” as the Publisher.

Authors who publish with this journal agree to the following terms:

  1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under CC BY 4.0 that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.

  2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.

  3. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work