| 考虑腔内压力变化的航空轮胎静载仿真研究 |
| Study on Static Loading Simulation of Aircraft Tire Considering Cavity Pressure Variation |
| 投稿时间：2021-02-03 修订日期：2021-02-03 |
| DOI：10.12136/j.issn.1000-890X.2021.08.0569 |
| 中文关键词: 航空轮胎 腔内压力 径向刚度 分布压力 流体腔 仿真分析 |
| 英文关键词: aircraft tire cavity pressure radial stiffness distributed pressure fluid cavity simulation analysis |
| 基金项目:国家级大学生创新创业训练计划项目（2020105330053）；校企合作研究项目（H201703310370001） |
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| 中文摘要: |
| 针对分布压力模拟航空轮胎充气压力无法反映腔内压力变化的问题，采用流体腔模拟航空轮胎充气结构，进
行航空轮胎静载仿真研究。采用Yeoh橡胶材料本构模型和Rebar帘线层加强筋单元建立某型航空轮胎二维几何模型，通
过修改INP文件，建立航空轮胎流体腔三维仿真模型。对静载工况下分布压力模型和流体腔模型航空轮胎进行分析，结
果表明：在自由充气阶段，不同充气压力下2种模型轮胎的断面宽及外直径相等；轮胎下沉量小于10 mm时，2种模型轮胎
径向刚度基本相同，当轮胎下沉量达到30 mm时，流体腔模型轮胎径向刚度比分布压力模型轮胎大3%～4%；流体腔模型
轮胎腔体体积与腔内压力呈近似反比例关系。 |
| 英文摘要: |
| 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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