靜壓油膜軸承之工程分析與剛度最佳化

Engineering Analysis and Optimal Stiffness of Hydrostatic Oil Journal Bearings

蔡於儒(Yu-Ju Tsai)

指導教授 ： 康淵

中原大學/工學院/機械工程研究所/碩士(2003年)

https://doi.org/10.6840/cycu200300715

摘要

中文摘要

本文研究之目的在於設計出人機介面之靜壓油膜軸承工程計算設計軟體，主要功能是在被要求之承載力下獲得最佳化之軸承剛度。此軟體計算方法是根據靜壓軸承工作時各油腔間的潤滑油流量平衡原理，且假設各油腔間壓力呈線性分佈，建立計算流程並循此推導計算公式，並導入基因演算法作為最佳化之設計方法。在設計靜壓軸承中使用本軟體的分析過程中，設計者首先可經由人機介面之主選單中輸入負載、轉速、節流參數、軸承直徑、軸承長度、供油壓力、工作溫度範圍等設計條件，接著選擇油品、節流器形式、軸向節流面寬度比、徑向節流面寬度比、間隙比與油腔數目等設計參數；經由此軟體的程式計算，輸出初始設計軸承之承載力、偏心率、偏位角、流量、剛度、總功耗等性能參數與節流器尺寸之幾何參數。進一步使用本軟體的最佳化模組以剛度最佳化為目標，在固定供油壓力、節流器形式、轉速、工作溫度、軸承直徑、軸承長度等參數下，得到受限制範圍內軸向節流面寬度比、徑向節流面寬度比及節流參數等三個參數的最佳值。

關鍵字

靜壓油膜軸承 ； 基因演算法 ； 節流參數 ； 剛度最佳化

並列摘要

Abstract

The object of this studies is to build the engineering analysis and calculation program of hydrostatic oil journal bearing with obtained optimal stiffness in the required load capacity. According to the conservation of flow rate in each recess and the linear distribution of pressure between the recesses, we build the design process and calculation formulas, and use genetic algorithms for optimizing stiffness. By inputting requiring load capacity, shaft rotation speed, restriction parameter, journal diameter, journal length, supply pressure, range of working temperature, lubricant, restrictor type, axial-flow land width ratio, circumferential-flow land width ratio, bearing clearance ratio and recess number, the program will output the load capacity, eccentricity ratio, attitude angle, flow rate, film stiffness, power, and restrictor size. And use Genetic Algorisms to search optimal restriction parameter, axial-flow land width ratio, circumferential-flow land width ratio for optimizing stiffness

並列關鍵字

hydrostatic oil journal bearings ； genetic algorithms ； optimal stiffness ； restriction parameter

參考文獻

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