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设计和制造了一套采用液压加载方式来施加法向载荷的微动疲劳试验装置,并且在该装置上进行了各向异性材料DD3与粉末高温合金FGH95以及DZ125与FGH95配对接触的微动疲劳试验,研究其微动疲劳的损伤过程.各向异性材料微动疲劳试验的完成证明了该装置的性能良好.将微动综合损伤参量应用于各向异性材料微动损伤的表征,并建立了DD3和DZ125相应的微动疲劳寿命预测模型.通过微动综合损伤参量的计算分析与试验验证,表明所建立的各向异性材料微动疲劳寿命模型其预测结果误差分散带均在2.8倍因子以内.
A set of fretting fatigue test device with a normal load applied by hydraulic loading was designed and manufactured. And fretting fatigue test with anisotropic material DD3 and powder superalloy FGH95 and mating contact of DZ125 and FGH95 was carried out on this device , The study of the fretting fatigue damage process.Animal anisotropic material fretting fatigue test is completed to prove the performance of the device.Finally, the fretting damage parameters are applied to the anisotropic material fretting damage characterization, and the establishment of DD3 And fretting fatigue life prediction model corresponding to DZ125.The calculation and analysis of the fretting damage parameters and the experimental verification show that the error dispersion bands of the fretting fatigue life model of the established anisotropic material are all within 2.8 factor.