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Chinese Journal of High Pressure Physics  > 2014  >  28(1): 23-28.
WANG Peng-Fei, XU Song-Lin, HU Shi-Sheng. A Constitutive Relation of Aluminum Foam Coupled with Temperature and Strain Rate[J]. Chinese Journal of High Pressure Physics, 2014, 28(1): 23-28. doi: 10.11858/gywlxb.2014.01.004
Citation: WANG Peng-Fei, XU Song-Lin, HU Shi-Sheng. A Constitutive Relation of Aluminum Foam Coupled with Temperature and Strain Rate[J]. Chinese Journal of High Pressure Physics, 2014, 28(1): 23-28. doi: 10.11858/gywlxb.2014.01.004
shu

A Constitutive Relation of Aluminum Foam Coupled with Temperature and Strain Rate

doi: 10.11858/gywlxb.2014.01.004

  • CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei 230027, China

  • Received Date: 25 Oct 2012
  • Rev Recd Date: 14 Jan 2013
    Abstract
  • The results of split Hopkinson pressure bar (SHPB) and quasi-static compression tests for aluminum foam at different strain rates and temperatures are used to explore its constitutive relation.It is revealed that there is a coupling of the temperature effect and the strain rate effect, namely the higher the temperature is, the more significant the strain rate effect of the aluminum foam is.In the framework of Sherwood and Frost constitutive relation, with appropriate correction of the strain rate sensitivity coefficient considering the coupling effects between temperature and strain rate, a constitutive equation of aluminum foam is proposed.The results show that the revised constitutive equation can fit the experimental results well in the density, temperature and strain rate ranges considered.

     

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