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Stress-strain characteristics of oil-tea camellia seed during pressing
  
DOI：10.12166/j.zgyz.1003-7969/2020.07.026
KeyWord:oil-tea camellia seed  pressing process  stress-strain  mathematical model  Kawakitas Equation
FundProject:湖北省粮食局“优质粮食工程”科技创新项目（201313012）
Author NameAffiliation
LI Zhengwen 1.School of Mechanical Engineering, Wuhan Polytechnic University，Wuhan 430023，China 
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Abstract:
      The experimental study and mathematical modeling of the stress-strain characteristics of oil-tea camellia seed during the pressing process were carried out. A kind of oil-tea camellia seed from Hubei province was taken as the pressing object, then the self-made limited oil drain plunger pressing device was used to press the oil-tea camellia seed with three kinds of mass(20,30,40 g) at four kinds of loading rates(0.01，0.02，0.04，0.06 kN/s), and the stress-strain curves were obtained.Furthermore, mathematical modeling was performed with Kawakitas Equation,and the mathematical model of the stress-strain relationship at four loading rates was obtained.The curve corresponding to the mathematical model was compared with the experimental data, and the scattered points of the measured data were found to fluctuate around the established mathematical model curve, which indicated that the mathematical model established by the Kawakitas Equation was accurate.
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