Transient Thermal Property Analysis for Spindle-Bearing System Considering Thermo-Deformation Coupling

doi:10.7652/xjtuxb201508009

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Transient Thermal Property Analysis for Spindle-Bearing System Considering Thermo-Deformation Coupling

更新时间：2025-07-09

- Transient Thermal Property Analysis for Spindle-Bearing System Considering Thermo-Deformation Coupling
- Vol. 49, Issue 8, Pages: 52-47(2015)
- 作者机构：
  
  西安交通大学机械制造系统工程国家重点实验室,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201508009
  CLC： TH133.2
- Online First：10 August 2015，
  
  Published：2015
- 稿件说明：
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Transient Thermal Property Analysis for Spindle-Bearing System Considering Thermo-Deformation Coupling[J]. 2015, 49(8): 52-47.
DOI：

Transient Thermal Property Analysis for Spindle-Bearing System Considering Thermo-Deformation Coupling[J]. 2015, 49(8): 52-47. DOI： 10.7652/xjtuxb201508009.

摘要

为了更准确地预测主轴-轴承系统的温度场并实时监测关键零部件的温升情况

建立了考虑热-变形耦合的轴系瞬态热网络模型。根据热弹性力学理论

推导出主轴-轴承系统在装配应力、离心应力和热应力综合作用下的径向复合变形方程

基于热网络法优选试验轴系关键部件作为温度节点

综合考虑润滑剂黏温效应及轴系径向复合应力与变形

实时修正轴系热源、热边界条件等特性参数

实现了温度场与变形的耦合分析。通过编程求解获得了不同条件下轴承的瞬态温升曲线及轴系关键热参数的瞬态特性

结果表明

主轴转速越高

轴系热平衡温度越高

平衡时间越短; 迭代步长的选取只影响温升曲线的收敛时间

不影响稳态温度值。与试验数据的对比结果表明

使用该瞬态热网络模型预测轴系温度场可显著降低计算误差。

Abstract

To predict the temperature field of spindle-bearing system more accurately and monitor the temperature rise of key parts

a transient thermal network model with the coupling of the temperature field and deformation was established. The radial compound stress-deformation equation under the initial assembly stress

centrifugal stress and thermal stress was derived following thermo-elasticity theory. The key system components were picked out as the heat nodes according to thermal network optimization. Taking both temperature-viscosity effect and radial compound stress-deformation into account

several key thermal parameters

such as heat source and thermal boundary conditions

were modified in real time. The coupled temperature field and deformation of spindle-bearing system were analyzed. The transient temperature curves of bearings under different conditions and the transient properties of key thermal parameters were obtained numerically. The results shows that the higher of the spindle speed

the higher of the equilibrium temperature

and the shorter of the equilibrium time. The iterative step can only affect the equilibrium time but not the equilibrium temperature. A comparison with a set of experiments indicates that the transient thermal network model enables to reduce errors remarkably in predicting the temperature field of spindle-bearing system.

关键词

Keywords

references

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