Volume 34 Issue 4
Sep.  2014
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Mao Liu-wei, Wang An-wen, Deng Lei, Han Da-wei. Dynamic buckling of elastic rectangular thin platessubjected to in-plane impact[J]. Explosion And Shock Waves, 2014, 34(4): 385-391. doi: 10.11883/1001-1455(2014)04-0385-07
Citation: Mao Liu-wei, Wang An-wen, Deng Lei, Han Da-wei. Dynamic buckling of elastic rectangular thin platessubjected to in-plane impact[J]. Explosion And Shock Waves, 2014, 34(4): 385-391. doi: 10.11883/1001-1455(2014)04-0385-07

Dynamic buckling of elastic rectangular thin platessubjected to in-plane impact

doi: 10.11883/1001-1455(2014)04-0385-07
Funds:  Supported bythe National Natural Science Foundation of China (11172330)
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  • Corresponding author: Mao Liu-wei, 111mlw@163.com
  • Received Date: 2012-12-07
  • Rev Recd Date: 2013-03-06
  • Publish Date: 2014-07-25
  • Dynamic buckling of thin rectangular plates under elastic compression waves caused by unaxial impact was investigated. Governing equations and a supplementary restraint-equation at compression wave front were obtained on the basis of energy transformation and conservation during buckling of plates; the real buckling displacement must fulfill the governing equations and the supplementary restraint-equation. Based on the requirements of above relations, a numerical method was established to solve the problem, and the relations of the amplitude of impulsive loads, buckling modes and critical buckling length were studied. Research results indicate that: critical buckling length decreases with the increase of impact load when the ratio of width to thickness of plate is fixed; the first order parameter of dynamic critical force is about 1.5 times of the same order parameter of static compression critical force; with weakening of boundary constraints, a smaller buckling load is required to cause the plate to buckle and transverse inertia increase gradually.
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