文章摘要
Study on Static Loading Simulation of Aircraft Tire Considering Cavity Pressure Variation
Received:February 03, 2021  Revised:February 03, 2021
DOI：10.12136/j.issn.1000-890X.2021.08.0569
Key Words: aircraft tire；cavity pressure；radial stiffness；distributed pressure；fluid cavity；simulation analysis
Author NameAffiliationE-mail
LI Luming Central South University 2414625531@qq.com 
QIANG Jun Central South University  
QING Qifu Central South University
Shuguang Rubber Industry Research and Design Institute Co. ，Ltd 		 
LU Hengyu Shuguang Rubber Industry Research and Design Institute Co. ，Ltd  
JIANG Bingyan* Central South University jby@csu.edu.cn 
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Abstract:
      In order to solve the problem that the aircraft tire inflation pressure simulated by distributing pressure could not reflect the cavity pressure change，the fluid cavity was used to simulate the inflatable structure of the aircraft tires，and the static loading simulation of the aircraft tires was carried out. The aircraft tire two-dimensional geometric model was established by using Yeoh rubber material constitutive model and Rebar cord layer reinforcement unit. Then the three-dimensional fluid cavity simulation model of the aircraft tires was established by modifying INP file. The distributed pressure model and fluid cavity model tires under static load condition were analyzed. The results showed that the cross-section width and outer diameter of two model tires with different inflation pressures were same during free inflation period. When the tire deflection was less than 10 mm，the radial stiffnesses of the two model tires were basically the same. When the tire deflection reached 30 mm，the radial stiffness of the fluid cavity model tire was 3%～4% larger than that of the distributed pressure model tire. For the fluid cavity model tire，the cavity volume was inversely proportional to the cavity pressure.
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