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SimSun;">2.1</span></span></a><span class="6" style="line-height: 14pt; background-color: transparent;">润滑理论的形成与发展</span></p> <p class="21" style="margin:0cm;margin-bottom:.0001pt;text-align:justify; text-justify:inter-ideograph;text-indent:26.0pt;line-height:23.3pt;mso-line-height-rule: exactly;background:transparent"><span class="2">经典流体润滑理论起源于1886年，从</span><span class="2TimesNewRoman"><span lang="EN-US">Reynolds</span></span><span class="2">提出</span><span class="2TimesNewRoman"><span lang="EN-US">Reynolds</span></span><span class="2">方程以来奠定了润 滑理论的基础，距今己有200多年的历史了<sup>[36]</sup>。起初，在进行理论研宄时由于科技发 展的限制，许多条件都是为了更利于分析进行了合理的简化和假设。随着科技的发展, 分析己经在基本模拟现实的基础之上进行。在润滑理论发展过程中每一次进步，都与 科学技术息息相关。科技的进步使理论得到升华，理论的发展又推动科技跃进，彼此 之间相互促进。润滑理论的发展过程大致上可分为3个时期。</span></p> <p class="21" style="margin:0cm;margin-bottom:.0001pt;text-align:justify; text-justify:inter-ideograph;text-indent:26.0pt;line-height:23.3pt;mso-line-height-rule: exactly;background:transparent"><span class="2">第1时期：从1886年提出</span><span class="2TimesNewRoman"><span lang="EN-US">Reynolds</span></span><span class="2">方程到二战以前。在这个时期，计算机还是 稀有的物品，其技术尚无法的合理应用，人们当时研宄</span><span class="2TimesNewRoman"><span lang="EN-US">Reynolds</span></span><span class="2">方程解的求法。研 究</span><span class="2TimesNewRoman"><span lang="EN-US">Reynolds</span></span><span class="2">方程可以得到无限长轴承和短轴承解，在此过程中主要是依靠</span><span class="2TimesNewRoman"><span lang="EN-US">Reynolds </span></span><span class="2">的解析解和对简单宏观场的模拟等，用简化假设得到的结果来说明轴承受力情况和其 变化规律。分析了气体和液体动压润滑在性能上的不同，润滑技术在轴承上的应用得 到了发展。但是，在这个时期人们只可以简要地计算的</span><span class="2TimesNewRoman"><span lang="EN-US">Reynolds</span></span><span class="2">方程解，得到的解 与轴承的实际情况有很大的差别。</span></p> <p class="21" style="margin:0cm;margin-bottom:.0001pt;text-align:justify; text-justify:inter-ideograph;text-indent:26.0pt;line-height:23.3pt;mso-line-height-rule: exactly;background:transparent"><span class="2">第2时期：二战结束以后到1960年以前，润滑理论发展迅速。人们可以计算出 有限长径向轴承相关性能，这主要是人类在战争期间保密计算的发展造成的。在此阶 段人们对油膜形成有了更深刻的认识，并且更加了解油膜边界条件。起初，对于润滑 轴承人们只对轴承压力分布进行计算。由于数值计算技术的进步，现在可以对轴承静 特性、动特性和稳定性进行分析计算，使得轴承技术也得到质的变化。20世纪50年 代，各个地方开始使用流体静压轴承。1950年以后，气体润滑成为新的发展趋势。 在这个时期，学者们发现惯性、温度、弹性变形、流体性能等与润滑效果有着密切的 联系，学者们开始主要研宄润滑时的惯性、温度等问题。</span></p> <p class="21" style="margin:0cm;margin-bottom:.0001pt;text-align:justify; text-justify:inter-ideograph;text-indent:26.0pt;line-height:23.3pt;mso-line-height-rule: exactly;background:transparent"><span class="2">第3时期：20世纪60年代至今，工程模型建立更接近实际情况。动静状态联合 的计算分析方法成为新的求解方式，对于低副接触的滚动轴承，因为动静结合法而使 轴承的外形设计趋于完美。人们把几何参数模型、润滑剂性能模型、表面粗糙度模型 添加到润滑模型中，通过这种更接近工况的润滑模型求得流体润滑方程解。在高副接 触方面，例如：凸轮、齿轮、滚动轴承等，学者们把</span><span class="2TimesNewRoman"><span lang="EN-US">Reynolds</span></span><span class="2">方程和</span><span class="2TimesNewRoman"><span lang="EN-US">Hertz</span></span><span class="2">弹性接触 理论耦合丰富了润滑理论；结合弹性变形、温度和表面结构设计出热弹流计算模型； 把热变形、压力、温度、弹性变形、粗糙度等耦合，结合润滑理论和热弹流计算模型 推导得出比较接近工况要求的润滑理论模型。对于机械故障诊断、重型机械失效、工 程润滑等提供了更佳准确的理论。</span></p> <p class="21" style="margin:0cm;margin-bottom:.0001pt;text-align:justify; text-justify:inter-ideograph;text-indent:26.0pt;line-height:23.3pt;mso-line-height-rule: exactly;background:transparent"> </p> <p class="21" style="margin:0cm;margin-bottom:.0001pt;text-align:justify; text-justify:inter-ideograph;text-indent:26.0pt;line-height:23.3pt;mso-line-height-rule: exactly;background:transparent"><span style="font-size:9.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family: "Times New Roman";mso-font-kerning:1.0pt;mso-ansi-language:EN-US;mso-fareast-language: ZH-CN;mso-bidi-language:AR-SA">本文采摘自“数控加工中心主轴轴承油气润滑机理研究”，因为编辑困难导致有些函数、表格、图片、内容无法显示，有需要者可以在网络中查找相关文章！本文由伯特利数控整理发表文章均来自网络仅供学习参考，转载请注明！</span></p></div> <div class="blank30"></div> <!-- tag --> <div class="blank10"></div> 标签： <a href='/index.php?case=tag&act=show&tag=%E5%8A%A0%E5%B7%A5%E4%B8%AD%E5%BF%83' target='_blank'>加工中心</a> <a href='/index.php?case=tag&act=show&tag=%E6%95%B0%E6%8E%A7%E5%8A%A0%E5%B7%A5%E4%B8%AD%E5%BF%83' 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