Composite materials are gaining more and more popularity in mechanical engineering. It is no different in the area of hydrostatic drive, where they are mainly used in high-pressure hydraulic hoses. The paper presents experimental studies of dynamic changes in the length of a microhydraulic hose under the influence of step pressure and flow load. It has been shown that an increase in internal pressure leads to ever greater shortening of the hose, while an increase in the flow rate leads to its elongation. It has also been shown that these two changes do not occur simultaneously. Length changes due to pressure take place virtually immediately, while those due to flow rate are much slower. A mathematical model that describes these changes based on a continuous system was also presented. The Matlab Simulink package was used to solve the model numerically.

复合材料在机械工程中越来越受欢迎。在静液压驱动领域也没有什么不同，在静液压驱动领域，它们主要用于高压液压软管。本文介绍了在阶跃压力和流量载荷的影响下，微液压软管的长度动态变化的实验研究。已经表明，内部压力的增加导致软管的越来越大的缩短，而流速的增加导致软管的伸长。还显示出这两个变化不会同时发生。由于压力引起的长度变化几乎立即发生，而由于流速引起的长度变化要慢得多。还提出了描述基于连续系统的这些变化的数学模型。