Refinement of Piston Friction Parameters in a Smooth Barrel

IF 0.5 4区工程技术 Q4 ENGINEERING, MECHANICAL

Journal of Friction and Wear Pub Date : 2023-06-22 DOI:10.3103/S1068366623010130

A. D. Sidorov, V. A. Burakov, V. D. Zorin, A. S. D’yachkovskiy, E. Yu. Stepanov

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Abstract—

This article describes fine tuning of wear diagnostics of a laboratory smooth barrel with a length of 5 m and diameter of 30 mm during tests. The devices are developed for measurements of internal diameter and force of pulling a piston prototype through the entire barrel length. An analog–digital instrument for measurement of internal diameter allows one to detect and to measure defects of arbitrary deformed barrel. The dimensions of the sensors used in the device allow us to scale it up for measurements of barrel of both lower and higher diameter. The device of force measurements allows us to estimate the friction parameters before experiments to clarify the mathematical model of gas dynamic processes accompanying the shot and to adjust loading conditions, if necessary. It has been demonstrated that their use allows us to estimate wear and to diagnose the state of the barrel system. Significant broadening of bore on the side of the breech end of the barrel has been detected. There is a correlation of measured data from both instruments. A ballistic experiment has been carried out using the updated measuring and recording complex. On the basis of the results the friction parameters of the piston–barrel couple obtained before the experiments have been accounted in the mathematical model of gas dynamic processes. This has allowed us to reduce the number of matching parameters upon simulation and to perform more accurate analysis of gas dynamic processes accompanying a shot with plotting respective time dependences of piston pressure and speed as well as distribution of maximum gas temperatures and pressure along the barrel length. Thus, the coefficient of the law of gunpowder burning has increased by 10%.

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光滑枪管中活塞摩擦参数的细化

摘要:本文介绍了长5 m、直径30 mm的实验室光滑桶在试验过程中磨损诊断的微调。该装置用于测量活塞原型在整个筒体长度内的内径和拉力。一种测量内径的模拟-数字仪器可以检测和测量任意变形桶的缺陷。设备中使用的传感器的尺寸允许我们将其按比例放大，以测量更低和更高直径的桶。力测量装置允许我们在实验前估计摩擦参数，以澄清伴随射击的气体动力学过程的数学模型，并在必要时调整加载条件。已经证明，它们的使用使我们能够估计磨损和诊断桶系统的状态。已发现枪管后端侧膛显着变宽。两种仪器的测量数据有相关性。利用更新后的测量和记录装置进行了弹道试验。在此基础上，将实验前得到的活塞-筒副的摩擦参数纳入气体动力学过程的数学模型。这使我们能够减少模拟时匹配参数的数量，并对伴随射击的气体动态过程进行更准确的分析，绘制活塞压力和速度的各自时间依赖性，以及最大气体温度和压力沿枪管长度的分布。因此，火药燃烧规律的系数提高了10%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Friction and Wear ENGINEERING, MECHANICAL-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

1.50

自引率

28.60%

发文量

审稿时长

6-12 weeks

期刊介绍： Journal of Friction and Wear is intended to bring together researchers and practitioners working in tribology. It provides novel information on science, practice, and technology of lubrication, wear prevention, and friction control. Papers cover tribological problems of physics, chemistry, materials science, and mechanical engineering, discussing issues from a fundamental or technological point of view.

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