Russian Maritime Register of Shipping        Russian |    Chinese |    Korean |    Japanese
Authorize, please
  

Research Bulletin by RS

Metallurgy problems in contemporary and future shipbuilding
Authors: V.A. Malishevsky,  V.T. Tomashevsky 


Abstract


The article examines the results of strain deflection of rod-shaped samples, plates and thin-walled shells under static and dynamic loading. It is shown that the transition of metal plastic formation process into an unsteady condition drastically influences the limiting metal characteristics and critical structure formation. The irregular character of metal surface change in the zone of unstable plastic strain is shown for the first time, with the necking down radius change being not monotonic but dependent on aperiodic non-stable movement. The study also presents the comparability of static and dynamic tests results of rod-shaped samples on quasistatic tension and impact tension, and flat plates tests on hydrostatic and dynamic buckling.


Keywords: strain components, critical structure, state of stress, strain hardening, mathematical imitation model.

 

References


1. Rybin V.V., Malishevsky V.A., Khlusova E.I. High-strength weld improving steels. St. Petersburg, Polytechnic University Publ. 2016, 211 p. (In Russian)

2. Malinin N.N. Applied theory of plasticity. Moscow, Mashinos-troenie Publ., 1975, 399 p.

3. Kurkin S.A. Strength of welded thin-walled pressure-operated containers. Moscow, Mashinostroenie Publ., 2006,436 p. (In Russian)

4. Stepanov G.V. Elastoplastic strain of materials under impulsive load. Kiev, Naukova dumka Publ., 1979, 286 p. (In Russian)

5. Vashchenko А.Р., Stepanov G.V., Tokareva V.M., Leonov V.P., Motovilina G.D., Eglit A.S. Influence of loading rate to mechanical properties of steels with different rate of strength. Problemy prochnosti [Problems of strength]. 1987, pp.42-48. (In Russian)

6. Kormilitcin Y.N., Malishevsky V.A, Melnikov S.Y., Tomashevsky V. T. Problem of formation of limit conditions set in imitation technologies of processes of elastoplastic strain of rods and plates (depressed shells) under quasi-static loading and impact loading of engineering structures. Nauka i tekhnologiya. Rossiyskaya shkola. Izbrannye trudy [Science and technology. Russian school. Selected works]. Moscow, Russian Academy of Sciences, 2005, pp. 290-300.

 

About authors


Malishevsky Viktor - DSc, professor, FSUE "Central Research Institute of Structural Materials "Prometey", 49, Shpalernaya st., 191015, St. Petersburg, Russia, e-mail: victorm@crism.ru, tel.: +7 (812) 274-92-22


Tomashevsky Vladislav - DSc, professor, N.G. Kuznetsov Navy Academy, 17/1, Ushakovskay naberezhnaya, 197045, St. Petersburg, Russia, tel.: +7 (812) 452-03-63

 

Issue: 46/47 (2017)



For citation: V.A. Malishevsky,  V.T. Tomashevsky. Metallurgy problems in contemporary and future shipbuilding. Research Bulletin by Russian Maritime Register of Shipping. 2017, No. 46/47, pp. 57-64.

* * *



UDC:  620.178.4/.6
Pages:  57-64
Article (.pdf):  Download


   To list of issues