Метод динамического испытания металлов (стр. 3 )

rajit K. P. Theoretical analysis of strain - and stress-based forming limit diagrams // The Journal of Strain Analysis for Engineering Design. 2013. Vol. 48(3). P. 177-188.

5. Keeler S. P., Backhofen W. A. Plastic instability and fracture in sheet stretched over rigid punches // ASM Trans Q. 1964. Vol. 56. P. 25–48.

6. ISO 12004-2:2008. Metallic materials. Sheet and strip. Determination of forming-limit curves. Part 2: Determination of forming-limit curves in the laboratory.

7. Persy J. N. The effect of strain rate on the forming limit diagram for sheet metal/ Annals of CIPP. 1980. Vol. 29, №1. P. 131-132.

8. El-Magd E., Treppman C. Mechanical behaviour of AA7075, Ck45N and TiAl6V4 at high strain rates//Materialsweek. 2000. Vol. 2, № 1. P. 88-96.

9. Wood W. W. Experimental Mechanics at Velocity Extremes – Very High Strain Rates // Experimental Mechanics. 1967. P. 441-446. Doi:10.1007/BF02326303

10. El-Magd E., Abouridouane M. Einfluss der Umformgeschwindigkeit und temperatur auf das Umformvermцgen metallischer Werkstoffe // Zeitschrift fьr Metallkunde. 2003. Vol. 94. P. 35-45.

11. Bach Fr.-W., Rodman M., Rossberg A., Weber J., Walden L. Verhalten von Aluminiumwerkstoffen bei der elektromagnetischem Umformung // Colloquium elektromagnetische umforming. 28 Mai 2003. Dortmund, Germany. P. 11-19

12. Li et al F.-Q. Formability of Ti–6Al–4V titanium alloy sheet in magnetic pulse bulging // Materials and Design. 2013. Vol. 52. P. 337–344.

13. Seth M., Vohnoutn V. J., Daehn G. S. Formability of steel sheet in high velocity impact // Journal of Materials Processing Technology. 2005. Vol. 168. P. 390–400.

14. Engelhard  M., von Senden genannt Haverkamp H., Klose C., Bach Fr.-W.  Development of a Pneumatic High-Speed Nakajima Testing Device // 5th International Conference on High Speed Forming. 24 ‑26 April, 2012. Dortmund, Germany. P. 280-290.

15. El-Magd E., Abouridouane M. Characterization, modelling and simulation of deformation and fracture behaviour of the light-weight wrought alloys under high strain rate loading // International Journal of Impact Engineering. 2006. Vol. 32 (5). P. 741 – 758.

16. Engelhardt M., von Senden genannt Haverkamp H., Kiliclar Y., Schwarze M., Vladimirov I., Bormann D., Bach F.-W., Reese S. Characterisation and Simulation of High-Speed deformation processes // 4th International Conference on High Speed Forming. 9 – 10 March, 2010. Columbus, Ohio, USA. P. 145-155.

17. Siegert K., Vulkan perplastische Umformung von Aluminium-Blechen mit nachfolgendem hydromechanischem tiefziehen // Sдchsische Fachtagung Umformtechnik. 2001. Vol. 8. P. 251-271.

18. Kim S. B., Huh H., Bok H. H., Moon M. B. Forming limit diagram of auto-body steel sheets for high-speed sheet metal forming // Journal of Materials Processing Technology. 2010. Vol. 211. P. 851–862.

19. , , Способ динамических испытаний листовых материалов с использованием магнитно-импульсного нагружения // Актуальные проблемы в машиностроении. 2017. Том 4, № 4. С. 94-99.

20. Hallquist J. O. LS-DYNA theoretical manual / Livermore Software Technology Corporation. Livermore. SA. 2006. 498 p.

Конфликт интересов

Авторы заявляют об отсутствии конфликта интересов.

Выражение признательности

Авторами выражается благодарность к. т.н., доценту каф. ОМД Самарского Университета за техническую помощь и теоретические консультации при написании данного материала.

Method of dynamic testing of metals

Vladimir A. Glushchenkov 1, a,, Dmitrij G. Chernikov 1, b, Alexandr. T. Tiabashvili 1, c

1 Samara National Research University named after Academician S. P. Korolev, 34 Moskovskoye Shosse, Samara, 443086, Russian Federation

a  https://orcid.org/0000-0002-2879-8996, *****@***ru, b  http://orcid.org/0000-0002-2268-658X, *****@***ru

c  https://orcid.org/0000-0001-5426-8123, *****@***ru

ARTICLE INFO

Article history:

Received:

Revised:

Accepted:

Available online:

Keywords

dynamic loading,

high speed tests,

pulse-magnetic process,

forming limit diagram (FLD),

ABSTRACT

Through to the introduction into the production of progressive methods of plastic deformation, characterized by high process flow rates (electrohydropulse stamping, magnetic-pulse stamping, exploding stamping), it became possible to expand the nomenclature of the products obtained. In comparison with traditional methods of metal forming, a different behavior of the metal was established, in particular, an increase in technological plasticity and increase limit mechanical characteristics At the moment, there are no adequate ways to assess the mechanical properties, the behavior of the material under conditions of dynamic, high-speed loading, which hinders the further development of the proposed methods in manufacture.

The most common method for estimating the ultimate shaping of sheet material is the test method for constructing forming limit diagrams (FLD). However, test conditions limit the rate of loading by the static region. Therefore, the actual task is to develop a method for testing materials under dynamic load conditions.

Existing techniques that use as an energy source an explosion, an electromagnetic field, a compressed gas, etc., have a number of defect. The article proposes to use a pulsed magnetic field of high intensity as a loading source. To determine the most optimal test parameters, three schemes were designed: with acceleration the punch, with the acceleration of the "package", with the direct action of the pulsed magnetic field on the workpiece. As a result of approbation to further development, a scheme was adopted with acceleration the punch. On the basis of the chosen scheme, the method of carrying out tests in the field of high-speed loading was substantiated, the optimal parameters of the discharge current were selected. Dynamic tests of workpiece from aluminum alloy 5182 were carried out, according to the results of tests using a digital image processing system forming limit diagram were constructed. The analysis of the diagram showed an increase in the limiting mechanical properties and also the plasticity of the metal with an increase in the deformation velocity.

For citation: Glushchenkov V. A., Chernikov D. G., Tiabashvili A. T., Method of dynamic testing of metals. Obrabotka metallov (tekhnologiya, oborudovanie, instrumenty) = Metal Working and Material Science

References

1. Chernikov D. G., Tiabashvili A. T., Glushhenkov V. A. Tehnologicheskoe primenenie impul'snyh magnitnyh polej v raketno-kosmicheskoj i aviacionnoj tehnike [Technological application of pulsed magnetic fields in rocket-space and aircraft engineering] // Materialy II nauchno-prakticheskoj molodezhnoj konferencii s mezhdunarodnym uchastiem «Tvorcheskij potencial molodezhi v reshenii aviakosmicheskih problem, 2017, no. 1 pp. 43-45.

2. Glushhenkov, V. A., Karpuhin V. F., Tehnologija MIOM materialov: monografija [Technology of MIPM materials: monograph] Samara: publ. Fedorov, 2014. 208 p.

3. Sklad М. Р., Verhaeghe J. D. Forming limit curve based on shear under tension failure criterion. International Deep Drawing Research Group, 31 May 2 June 2010. Graz, Austria, P. 54.

rajit K. P. Theoretical analysis of strain - and stress-based forming limit diagrams. The Journal of Strain Analysis for Engineering Design. 2013. Vol. 48(3). pp. 177-188.

5. Keeler S. P., Backhofen W. A. Plastic instability and fracture in sheet stretched over rigid punches. ASM Trans Q. 1964. Vol. 56. pp. 25–48.

6. ISO 12004-2:2008. Metallic materials. Sheet and strip. Determination of forming-limit curves. Part 2: Determination of forming-limit curves in the laboratory.

7. Persy J. N. The effect of strain rate on the forming limit diagram for sheet metal. Annals of CIPP. 1980. Vol. 29, №1. P. 131-132.

8. El-Magd E., Treppman C. Mechanical behaviour of AA7075, Ck45N and TiAl6V4 at high strain rates. Materialsweek, 2000, Vol. 2, № 1. pp. 88-96.

9. Wood W. W. Experimental Mechanics at Velocity Extremes – Very High Strain Rates. Experimental Mechanics, 1967, pp. 441-446. Doi:10.1007/BF02326303

10. El-Magd E., Abouridouane M. Einfluss der Umformgeschwindigkeit und temperatur auf das Umformvermцgen metallischer Werkstoffe. Zeitschrift fьr Metallkunde, 2003, Vol. 94. pp. 35-45.

11. Bach Fr.-W., Rodman M., Rossberg A., Weber J., Walden L. Verhalten von Aluminiumwerkstoffen bei der elektromagnetischem Umformung. Colloquium elektromagnetische umforming, 28 May 2003, Dortmund, Germany. pp. 11-19

12. Li et al F.-Q. Formability of Ti–6Al–4V titanium alloy sheet in magnetic pulse bulging. Materials and Design, 2013, Vol. 52. pp. 337–344.

13. Seth M., Vohnoutn V. J., Daehn G. S. Formability of steel sheet in high velocity impact. Journal of Materials Processing Technology, 2005, Vol. 168. pp. 390–400.

14. Engelhard  M., von Senden genannt Haverkamp H., Klose C., Bach Fr.-W.  Development of a Pneumatic High-Speed Nakajima Testing Device. 5th International Conference on High Speed Forming, 24 ‑26 April, 2012. Dortmund, Germany. pp. 280-290.

15. El-Magd E., Abouridouane M. Characterization, modelling and simulation of deformation and fracture behaviour of the light-weight wrought alloys under high strain rate loading. International Journal of Impact Engineering, 2006, Vol. 32 (5). pp. 741 – 758.

16. Engelhardt M., von Senden genannt Haverkamp H., Kiliclar Y., Schwarze M., Vladimirov I., Bormann D., Bach F.-W., Reese S. Characterisation and Simulation of High-Speed deformation processes. 4th International Conference on High Speed Forming, 9 – 10 March, 2010. Columbus, Ohio, USA. pp. 145-155.