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WANG Jin-xiang, LI Xiao-jie, LI Rui-yong, ZHANG Yue-ju. CALCULATION OF SIZE-BASED TEMPERATURE RISE AT THE INTERFACE OF PARTICLES CAUSED BY FRICTION IN EXPLOSIVE CONSOLIDATION OF POWDERS[J]. Engineering Mechanics, 2005, 22(S1): 52-57.
Citation: WANG Jin-xiang, LI Xiao-jie, LI Rui-yong, ZHANG Yue-ju. CALCULATION OF SIZE-BASED TEMPERATURE RISE AT THE INTERFACE OF PARTICLES CAUSED BY FRICTION IN EXPLOSIVE CONSOLIDATION OF POWDERS[J]. Engineering Mechanics, 2005, 22(S1): 52-57.
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CALCULATION OF SIZE-BASED TEMPERATURE RISE AT THE INTERFACE OF PARTICLES CAUSED BY FRICTION IN EXPLOSIVE CONSOLIDATION OF POWDERS

  • Departmentof Engineering Mechanics of Dalian University of Technology, State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian 116023, China

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  • Received Date: March 28, 2004
  • Revised Date: June 04, 2004
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  • An oblique impaction model of two parallel plates is proposed to study the frictional effect between particles in explosive consolidation of powders. The change tendence of the friction between particles with the change of temperature is analyzed and the time for hole compaction is investigated using LS-DYNA program. The temperature rise at the interface of particles caused by the thermo-force coupled friction is calculated by integration. Size effect is considered during the calculation and the effective critical size is given. Results show that temperature rise increases as the particle size or shock pressure increases. For micron-scale to nanon-scale particles, temperature at the interfaces can reach the melting pointonly if the size and shock pressure are large enough.
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