Investigation of the influence of the geometrical dimensions of the striker on the efficiency of energy transfer of shock pulses during wave strain hardening

Using the finite element model of the shock system, the efficiency of the shock pulse energy transfer to the deformation zone under wave strain hardening is studied. It was established, that conducting research from the point of view of the efficiency of transferring the shock pulse energy to the deformation zone, and from the point of view of the design of the shock pulse generator, is advisable on shock systems in which the contacting ends of the striker and the waveguide have equal diameters. Studies showed that with ratios 1<L1/L2<10; 5<L1/d1<10, an increase in the fraction of the shock pulse energy transmitted to the deformation zone n exceeds 80% for the striker and waveguide with diameters of 30, 48, 60, 90 mm. According to the adopted optimization criteria, the geometrical dimensions of the striker and the waveguide are determined, which ensure the transfer of the largest amount of shock pulse energy to the deformation zone.

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Study of the influence of cross section sizes of the rod shock system on the efficiency of shock pulse energy transfer to the deformation center

Kirichek

Barinov

Yashin

et al. 2020

J. Phys.: Conf. Ser.

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Assessment of the mechanical properties of welded joints after wave strain hardening

Kirichek

Barinov

Silantyev

et al. 2021

IOP Conf. Ser.: Mater. Sci. Eng.

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The purpose of this work is to establish the relationship between the modes of wave strain hardening (WSH) and changes in the ultimate strength, microhardness, impact strength of welded joints. The need for these studies is associated with the prevention of destruction of welded joints with the help of their subsequent WSH. The uniqueness of the WSH method lies in the wave loading of the processed material by shock pulses with a given duty cycle, energy and duration. This makes it possible to increase microhardness and form compressive residual stresses at a depth of more than 10 mm, which makes the use of the method promising for increasing the strength of welded seams. These studies have not previously been conducted. Materials 10XCHД, 30XГCA and 40X were taken as objects of research, from which important welded products are often made in industry. As a result of the research, based on the conditions for increasing the strength of welded joints of the selected materials, rational modes of strengthening and the direction of processing have been determined.

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Investigation of the influence of the geometrical dimensions of the striker on the efficiency of energy transfer of shock pulses during wave strain hardening

Cited by 2 publications

References 5 publications

Study of the influence of cross section sizes of the rod shock system on the efficiency of shock pulse energy transfer to the deformation center

Study of the influence of cross section sizes of the rod shock system on the efficiency of shock pulse energy transfer to the deformation center

Assessment of the mechanical properties of welded joints after wave strain hardening

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