ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Some experimental results of the free-free tubes laterally impacted by the missile weregiven and the finite element program LS-DYNA was used to simulate this dynamic response process.The instantaneous deformation of the circular shell given by experiments and computer simulationwere compared and discussed. It can be seen that when the impact occur the local dents firstly appearat the beginning of impact. With time increase, the depth of the dents increase, the scope of thedeformation of the tube wall is enlarged; the total stiffness of the cross-section of the tube is weakenand decreases at the impact point, the beam-like bending deformation take place and the rigid-bodytranslations occur. Through the computer simulation the exchanged energy between the missile andthe tube were acquired. The impact energy of the missile is transferred to internal energy and kineticenergy of the tube. The ratio of the internal energy with the kinetic energy of the tube is great for theweakness rigidity of the tube wall, which is opposite to that of a free-free beam. This research madeus deeply understand the character of the response when studying the elastic-plastic behavior of thefree circular shell under intense dynamic loading
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/54/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.340-341.263.pdf
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