Damping of Pressure Pulsations in Mobile Hydraulic Applications by the Use of Closed Cell Cellular Rubbers Integrated into a Vane Pump

作     者：David Bach Tom Masselter Thomas Speck 

作者机构：Plant Biomechanics Group Freiburg Botanic Garden Faculty of Biology University of Freiburg Schginzlestr. 1 79104 Freiburg Germany Freiburg Materials Research Center (FMF) Stefan-Meier-StraBe 21 79104 Freiburg Germany Competence Networks Biomimetic and BIOKON e. V. Schainzlestr. 1 79104 Freiburg Germany 

出 版 物：《Journal of Bionic Engineering》 (仿生工程学报（英文版）)

年 卷 期：2017年第14卷第4期

页      面：791-803页

核心收录：

学科分类：0710[理学-生物学] 0831[工学-生物医学工程（可授工学、理学、医学学位）] 080703[工学-动力机械及工程] 080704[工学-流体机械及工程] 08[工学] 080401[工学-精密仪器及机械] 0807[工学-动力工程及工程热物理] 0804[工学-仪器科学与技术] 0836[工学-生物工程] 0702[理学-物理学] 

基　　金：This study was supported by an industry partner.We want to thank the engineers and technicians of the Technical Workshop of the Institute for Biology Ⅱ/Ⅲ especially Dirk Renz for valuable help in designing and constructing the variable damping chamber and preparing the technical drawings.We also want to thank Timo Bartels for conducting part of the preliminary tests 

主　　题：pressure pulsations pressure ripple vane pump bio-inspired pulsation damping cellular rubbers flexible foams 

摘      要：The present study evaluates the potential of a bio-inspired pulsation damper in a vane pump used in mobile hydraulic ap- plications. Pressure pulsations caused by such positive displacement pumps can lead to malfunctions and noise in a hydraulic system. A common measure to reduce pressure pulsations is the integration of pressure pulsation dampers downstream of the pump. This type of damping measure can also be found in biology as e.g. in the human blood circulatory system. Such working principles found in living organisms offer a high potential for a biomimetic transfer into technical applications. The newly developed bio-inspired damper consists of cellular rubbers with non-linear viscoelastic material properties. In order to evaluate the new damping method, pressure pulsations were measured at two different back pressures and at a wide engine speed range of the vane pump. For further assessment, different setups, varying the stiffness of the cellular rubber materials and the damper volume, were tested. Within the tested back pressures, the pressure pulsations could be reduced by up to 40%. The developed integrated pulsation damper offers a high potential to dampen pressure pulsations of positive displacement pumps used in mobile hydraulic applications ooeratin~ below 10 bar.