ISSN:
1662-8985
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:
The explicit numerical method is used to trace the impact procedure of the tube columnsimpacted by a rigid body. The bar and rectangle tube models are both used to simulate the tubecolumn. The elastic and elas-plastic impact load with different mass ratio and impact speed areobtained. The calculation results show that: for elastic models, the bigger the mass ratio and thehigher the rigid body speed, the bigger the peak value of elastic impact load; at the same time, themore obvious the reduction effect of local buckling of rectangle tube on the peak value of impact loadand the longer the contact time of tube model; so the peak value of impact load of the rectangle tube isnot proportional to the rigid body speed. The stress wave in the tube causes a little difference betweenthe load curves of tube model and bar model. For elas-plastic models, the higher the rigid body speedand the smaller the mass ratio, the bigger the peak value of impact load and the longer the contacttime. The higher the rigid body speed, the bigger the difference between elastic and elas-plasticimpact load peak value due to the expanding of plasticity. Because of the effect of local buckling, thepeak value of elas-plastic impact load of rectangle tube is always lower than that of bar
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/40/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.33-37.363.pdf
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