期刊论文

Characteristics of compound pressure pulsation attenuator

中文

长沙理工大学学报(自然科学版)

1672-9331

2015

3

91-97+109

10.3969/j.issn.1672-9331.2015.03.014

国家自然科学基金资助项目（51275059）； 湖南省自然科学基金资助项目（14JJ7042A,2015JJ4003）；

本校为第一机构

为了研究流体压力脉动引发的振动与噪声影响系统的可靠性，提出了一种结构简单、体积小的复合式压力脉动衰减器结构。以穿孔板结构和板后平衡腔构成一个类似于并联的赫姆霍兹谐振系统，并附以弹性薄板作为振动元件，弹性薄板与流体构成一个耦合的受迫谐振系统，实现了对压力脉动的动力吸振与阻尼减振的有效衰减。基于管路动态特性，建立了管路系统的传递矩阵模型，对脉动衰减器衰减特性进行了仿真分析，并完成了试验样机的制作。试验测试结果表明，该脉动衰减器在较宽频段内有较好的衰减效果，试验结果与理论仿真分析基本吻合。

Vibration and noise caused by fluid pressure pulsation in hydraulic system affected system’s operational reliability.A compound pressure pulsation attenuator with simple structure and small size was put forward to solve the question.A perforated-panel structure and balance cavity composed the system which was similar to a parallel Helmholtz resonator system,and an elastic sheet was designed as a vibrating element in fluid to make up a cou-pled forced vibration system,which achieved dynamic vibration absorbing and damping. Based on the dynamic ...