本文選題：轉(zhuǎn)軸 + 垂向載荷��； 參考：《機(jī)械工程材料》2017年01期

【摘要】：利用JD-1型輪軌模擬試驗(yàn)機(jī)研究了在扭矩作用下轉(zhuǎn)軸表面的微動(dòng)損傷,通過(guò)改變垂向載荷大小,研究了垂向載荷對(duì)轉(zhuǎn)軸與軸承內(nèi)圈過(guò)盈配合面微動(dòng)損傷特性的影響,并借助激光共聚焦掃描電鏡和掃描電子顯微鏡觀察了損傷表面的磨痕和剖面的顯微組織,分析了兩種垂向載荷下轉(zhuǎn)軸表面的微動(dòng)損傷機(jī)理。結(jié)果表明:在垂向載荷作用下,轉(zhuǎn)軸與左右兩端軸承內(nèi)圈過(guò)盈配合面處出現(xiàn)了微動(dòng)損傷,磨損形式主要表現(xiàn)為黏著磨損和磨粒磨損;在垂向載荷較大的工況下,轉(zhuǎn)軸配合面的表面磨損加劇,塑性變形層變厚,微動(dòng)損傷變得更嚴(yán)重,并且左端配合面的磨損和塑性變形均比右端的嚴(yán)重,塑性變形層的厚度分布更加不均。
[Abstract]:The fretting damage of rotating shaft surface under torque is studied by using JD-1 wheel-rail simulator. By changing the vertical load, the influence of vertical load on the fretting damage characteristics of the interference fit surface between the shaft and the inner ring of the bearing is studied. The wear marks and microstructures of the damaged surface were observed by laser confocal scanning electron microscope and scanning electron microscope, and the mechanism of fretting damage on the surface of rotating shaft under two vertical loads was analyzed. The results show that fretting damage occurs at the interference surface between the rotating shaft and the inner ring of the left and right end bearing under vertical load, and the wear forms are mainly adhesive wear and abrasive wear. The surface wear of the shaft surface is aggravated, the plastic deformation layer becomes thicker, the fretting damage becomes more serious, and the wear and plastic deformation of the left side are more serious than those of the right side, and the thickness distribution of the plastic deformation layer is even more uneven.
【作者單位】： 西南交通大學(xué)牽引動(dòng)力國(guó)家重點(diǎn)實(shí)驗(yàn)室摩擦學(xué)研究所;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(51475393)
【分類號(hào)】：TH117

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4 朱e，

本文編號(hào)：1958327