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| 圆锥过盈联接几何参数对其接触面微动损伤的影响 |
| Influence of geometrical parameters of tapered interference connection on fretting damage of contact surface |
| 投稿时间：2016-09-14 |
| DOI： |
| 中文关键词: 过盈联接 微动损伤 几何参数 接触应力 摩擦切应力 数值模拟 |
| 英文关键词: interference fit fretting damage geometric parameter contact stress friction shear stress numerical simulation |
| 基金项目:国家自然科学基金青年基金资助项目(11402219); 吐哈石油勘探开发指挥部技术攻关项目(JXCHZC20120907023). |
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| 中文摘要: |
| 针对圆锥过盈联接接触面的微动损伤,重点讨论其轴套配合的几何参数与微动损伤的关系,运用平面应力应变求解法和数值模拟法,建立圆锥过盈联接的力学和有限元模型,分析不同套管槽数、配合长度、锥度和套管壁厚对轴和套管结合面的应力分布及接触状态的影响,研究接触应力和摩擦切应力随几何参数的变化规律,并进一步揭示该类联接的微动损伤机理。结果表明,圆锥过盈联接的接触面应力分布不均匀；随着套管槽数和锥度的增加,接触应力及摩擦切应力增大,接触面的滑移区减小；随着配合长度和套管壁厚的增大,接触应力和摩擦切应力减小,接触面滑移区增大。 |
| 英文摘要: |
| Aimed at the fretting damage of tapered interference connection on the contact surface, the paper focuses on the relationship between the axle sleeve match’s geometric parameters and fretting damage, and establishes mechanical and finite element models of tapered interference connection by using the plane stress strain method and numerical simulation method. It analyzes the influence of sleeve slot number, match length, conical degree and sleeve thickness on stress distribution and contact status of axle and sleeve’s junction surface, studies the variation of contact stress and friction shear stress with geometrical parameters, and further reveals the fretting damage mechanism of this kind of connection. The results show that the distribution of contact stress of the tapered interference connection is uneven, contact stress and friction shear stress increase with the increase of sleeve slot number and conical degree while the corresponding slip zone decreases. On the other hand, contact stress and friction shear stress decrease with increasing match length and sleeve thickness, and the corresponding slip zone increases instead. |
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