Development of a numerical simulation technique for modeling of failure of structures with stress concentrator under dynamic loading

Authors

  • A.Yu. Iziumova Institute of Continuous Media Mechanics UB RAS
  • A.A. Kostina Institute of Continuous Media Mechanics UB RAS
  • I.A. Panteleev Institute of Continuous Media Mechanics UB RAS
  • A.I. Vedernikova Institute of Continuous Media Mechanics UB RAS
  • A.E. Prokhorov Institute of Continuous Media Mechanics UB RAS
  • A.N. Vshivkov Institute of Continuous Media Mechanics UB RAS

DOI:

https://doi.org/10.7242/2658-705X/2020.1.2

Keywords:

fracture, fracture criterion, the evolution of defects, critical distance theory

Abstract

The constitutive equations taking into account non-local character of fracture near stress concentrators under dynamic loading have been developed. The generalization of a critical distance theory for dynamic loading which can be used for the fracture prediction in the wide range of strain rates (10-3to 104c-1) has been suggested. The analysis of inelastic deformation near the stress concentrators has been carried out in order to increase the accuracy of fracture prediction. Based on modeling damage accumulation processes, the mechanism of formation of critical distance in the stress concentrators area as a result of development of dissipative structure in ensemble of defects has been offered. Investigation on fracture surface of metallic specimens has been carried out. It has been shown that there are two areas with different macrorelief; characteristic size of the transition zone correlates with the critical distance value.

Supporting Agencies
Работа выполнена при финансовой поддержке гранта РФФИ №16-48-590148 р_а. 20

Author Biographies

  • A.Yu. Iziumova, Institute of Continuous Media Mechanics UB RAS
    кандидат физико-математических наук, младший научный сотрудник, Институт механики сплошных сред УрО РАН - филиал Пермского федерального исследовательского центра УрО РАН (ИМСС УрО РАН)
  • A.A. Kostina, Institute of Continuous Media Mechanics UB RAS
    кандидат физико-математических наук, младший научный сотрудник, ИМСС УрО РАН
  • I.A. Panteleev, Institute of Continuous Media Mechanics UB RAS
    кандидат физико-математических наук, научный сотрудник, ИМСС УрО РАН
  • A.I. Vedernikova, Institute of Continuous Media Mechanics UB RAS
    младший научный сотрудник, ИМСС УрО РАН
  • A.E. Prokhorov, Institute of Continuous Media Mechanics UB RAS
    младший научный сотрудник, ИМСС УрО РАН
  • A.N. Vshivkov, Institute of Continuous Media Mechanics UB RAS
    младший научный сотрудник, ИМСС УрО РАН

References

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Published

2020-04-17

Issue

No. 1 (2020)

Section

Research: theory and experiment

How to Cite

Iziumova, A. ., Kostina, A. ., Panteleev, I. ., Vedernikova, A. ., Prokhorov, A. ., & Vshivkov, A. . (2020). Development of a numerical simulation technique for modeling of failure of structures with stress concentrator under dynamic loading. Perm Federal Research Centre Journal, 1, 20-30. https://doi.org/10.7242/2658-705X/2020.1.2