Purpose

The purpose of this paper is to propose the pressure fluctuation to further evaluate and predict the dynamic and static characteristics of the aerostatic slider and improve the calculation accuracy of the aerostatic slider.

Design/methodology/approach

First-order velocity slip is introduced into the traditional gas-film fluid equation, and the numerical analysis method is used to solve the static performance of the aerostatic slider. The finite element analysis method is used to solve its dynamic characteristics.

Findings

It can be concluded from the simulation and experimental results that the model considering the velocity slip in the gas film flow is more accurate. The errors between the modal detection results and the vibration detection results (0.8%–5.8%) under speed slip are smaller than the traditional cases (23.7%–210%), which also verifies the correctness of the above conclusions.

Originality/value

In this paper, the method of simulation and experiment is used to prove that the first-order velocity slip model is more suitable to predict the dynamic response of the aerostatic slider than the condition without slip.

Peer review

The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-02-2020-0059/

中文翻译：

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微小速度滑移对空气静力滑块动力学特性的影响

目的

本文的目的是提出压力波动，以进一步评估和预测空气静力滑块的动态和静态特性，并提高空气静力滑块的计算精度。

设计/方法/方法

将一阶速度滑移引入到传统的气膜流体方程中，并使用数值分析方法来解决空气静力滑块的静态性能。有限元分析方法用于解决其动态特性。

发现

从仿真和实验结果可以得出结论，考虑气膜流动速度滑移的模型更为精确。速度滑移下模态检测结果与振动检测结果之间的误差（0.8％–5.8％）小于传统情况（23.7％–210％），这也验证了以上结论的正确性。

创意/价值

本文通过仿真和实验的方法证明了一阶速度滑移模型比无滑移的情况更适合于预测空气静力滑块的动态响应。

同行评审

本文的同行评审历史记录可在以下网址获得：https://publons.com/publon/10.1108/ILT-02-2020-0059/