Górecki Jan, Łykowski Wiktor, Husar Jozef, Knapčíková Lucia, Berdychowski Maciej
Faculty of Mechanical Engineering, Institute of Machine Design, Poznan University of Technology, 60-965 Poznań, Poland.
Department of Industrial Engineering and Informatics, Faculty of Manufacturing Technologies, Technical University of Košice, Bayerova 1, 08001 Prešov, Slovakia.
Materials (Basel). 2024 May 16;17(10):2396. doi: 10.3390/ma17102396.
The developments in manufacturing technologies are expected to reduce energy input without compromising product quality. Regarding the material densification process, numerical simulation methods are applied to achieve this goal. In this case, relevant material models are built using functions that describe the variation in mechanical parameters of the material in question due to its deformation. The literature review conducted for this research has revealed a shortage of experimental research methods allowing a determination of the coefficient of friction at low temperatures, approximately 200 K. This article proposes a method for determining the friction coefficient of dry ice sliding against steel. The experimental results were analysed to obtain several functions describing the variation in the coefficient of friction. These functions were then compared using goodness-of-fit indexes. Finally, two functions with similar goodness-of-fit values were chosen. The findings of this research project will complement the already available information and may be used in various research and implementation projects related to the development or improvement of currently used crystallised carbon dioxide conversion processes.
制造技术的发展有望在不影响产品质量的情况下减少能源投入。关于材料致密化过程，应用数值模拟方法来实现这一目标。在这种情况下，使用描述相关材料因变形而导致机械参数变化的函数来建立相关材料模型。针对本研究进行的文献综述表明，缺乏能够测定大约200K低温下摩擦系数的实验研究方法。本文提出了一种测定干冰与钢滑动时摩擦系数的方法。对实验结果进行分析以获得几个描述摩擦系数变化的函数。然后使用拟合优度指标对这些函数进行比较。最后，选择了两个拟合优度值相似的函数。本研究项目的结果将补充现有的信息，并可用于与当前使用的结晶二氧化碳转化工艺的开发或改进相关的各种研究和实施项目。
