目的 研究直升机滑动轴承磨损仿真及验证技术,开发直升机滑动轴承磨损仿真系统,通过试验验证其有效性。方法 针对滑动轴承磨损故障知识进行分析需求、细化分类关键要素、构建知识模型等故障知识建模技术研究,通过ABAQUS建立轴承接触力学仿真模型,分析仿真结果,基于滑动轴承材料样件磨损仿真的几何模型与试验样件,研究滑动轴承应力-磨损耦合仿真建模技术。通过磨损量测算、试验数据和外场数据等实测数据开展滑动轴承磨损仿真验证,研发滑动轴承磨损仿真系统,并以直升机某阻尼器带柄轴承为例,开展该轴承磨损仿真材料参数测定试验、摩擦磨损试验,构建该轴承磨损故障仿真模型。结果 基于应力-磨损耦合仿真模型及磨损量实测数据,开发直升机滑动轴承接触力学和磨损仿真模块,支持模型构建、多领域耦合仿真和仿真结果可视化。取试验工况为1 500、1 200、800、500、150 N的输入载荷得到的磨损深度数据,计算仿真数据与拟合曲线的最大误差不大于±6%。结论 该仿真技术路线可行。
Abstract
The work aims to conduct research on the simulation and verification technology of helicopter sliding bearing wear, develop a helicopter sliding bearing wear simulation system, and verify its validity through experiments. The fault knowledge modeling technology was studied through the knowledge demand analysis of sliding bearing wear faults, classification of key elements, knowledge models, etc. A bearing contact mechanics simulation model was established, and the contact mechanics simulation results were analyzed to study the contact mechanics simulation modeling technology of helicopter sliding bearings. The stress-wear coupling simulation modeling technology of sliding bearing material sample models was researched. Through research on the simulation verification technology of sliding bearing wear based on the measured wear data; developing a simulation system for sliding bearing wear, and taking the handle bearing of a certain damper of a helicopter as an example, the determination test of material parameters for the wear simulation of this bearing and the friction and wear test were carried out, and the wear fault simulation model of this bearing was constructed. Based on the stress-wear coupling simulation model of helicopter sliding bearings and the simulation verification technology of helicopter sliding bearing wear based on the measured data of wear amount, a contact mechanics and wear simulation module of helicopter sliding bearings was developed, supporting model construction, multi-domain coupling simulation and visualization of simulation results. Based on the wear depth data obtained from the friction and wear tests of sliding bearing materials, the experimental conditions of 1 500 N, 1 200 N, 800 N, 500 N, and 150 N were taken as the input loads of the sample model. The maximum error between the calculated simulation data and the fitting curve was no more than ±6%, which proved the feasibility of this simulation technical route.
关键词
直升机 /
滑动轴承 /
磨损仿真 /
应力-磨损耦合仿真模型 /
磨损性能
Key words
helicopter /
sliding bearing /
wear simulation /
stress-wear coupling simulation model /
wear performance
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