文章摘要
Mechanical Properties of Run-flat Tire in Static Load and Steady Cornering Condition
  
DOI：
Key Words: run-flat tire；sidewall；self-supporting rubber；static load；cornering；FEA
Author NameAffiliation
XUE Zi-chen Beijing University of Chemical Technology；National Engineering Laboratory of Tire Design and Manufacturing Process 
HE Jian-yun Beijing University of Chemical Technology；National Engineering Laboratory of Tire Design and Manufacturing Process 
DING Yu-mei Beijing University of Chemical Technology；National Engineering Laboratory of Tire Design and Manufacturing Process 
YANG Wei-min Beijing University of Chemical Technology；National Engineering Laboratory of Tire Design and Manufacturing Process 
JIAO Zhi-wei Beijing University of Chemical Technology；National Engineering Laboratory of Tire Design and Manufacturing Process 
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Abstract:
      Based on ABAQUS software，the three dimensional FEA models of 225/40R18 run-flat tire and traditional tire were established and the mechanical properties of tires under standard load in static load condition and steady cornering condition were analyzed.The results showed that，in the static load condition，either with normal tire pressure or under inflated pressure，high strain energy density was mainly on self-supporting rubber， belt and cap ends，especially in under-inflation state.In addition，the contact pressure at tire shoulder and radial stiffness of the run-flat tire were higher than traditional tire.When tires were under inflated，the sidewall deformation of run-flat tire was smaller than traditional tire，and the concentration level of contact pressure in tire shoulder was much higher than traditional tire.When tires were under steady cornering condition，either with normal tire pressure or under inflated pressure，the footprint of run-flat tire changed from rectangular shape into trapezoid with the increase of side cornering angle，while the footprint of traditional tire changed from rectangle into triangle.
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