Research Article
Internal-flow Origami Hydraulic Damper with Nonlinear Damping Characteristics
Issue:
Volume 13, Issue 4, August 2025
Pages:
108-122
Received:
30 May 2025
Accepted:
16 June 2025
Published:
23 July 2025
Abstract: In a wide range of industrial fields, the advancement of hydraulic dampers for vibration control has become an important research and development topic. In this paper, we propose a novel internal-flow origami hydraulic damper with nonlinear damping characteristics to overcome the limitations of conventional cylindrical hydraulic dampers with restricted linear strokes. First, the basic structure and design method of the proposed origami hydraulic damper are examined. Subsequently, the flow characteristics of the internal fluid in the origami hydraulic damper are analyzed, and a formula is derived to calculate the damping force acting on the damper. We confirm that the damping force is proportional to the square of the velocity. Furthermore, a verification experimental system using a nonlinear origami hydraulic damper in a mass-spring vibration system was developed. Shaking experiments using actual Fukushima earthquake waves were conducted, and the response acceleration decreased by 63.49%. For further verification, shaking experiments were performed by changing the orifice diameter of the nonlinear origami hydraulic damper, and the average reduction rate of the response acceleration for different orifice diameters was 62.68%. In addition, to verify the vibration control effect under different earthquake waves, we conducted shaking experiments using the same experimental setup and conditions as those used for the El Centro NS and Taft NW earthquake waves. The average reduction rate of the response acceleration for different earthquake waves was 62.22%. Thus, the damping characteristics and effectiveness of the proposed internal-flow origami hydraulic damper were confirmed.
Abstract: In a wide range of industrial fields, the advancement of hydraulic dampers for vibration control has become an important research and development topic. In this paper, we propose a novel internal-flow origami hydraulic damper with nonlinear damping characteristics to overcome the limitations of conventional cylindrical hydraulic dampers with restri...
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Research Article
Development of Vibration Control Devices with an Origami Hydraulic Damper for Spherical Water Tanks
Issue:
Volume 13, Issue 4, August 2025
Pages:
123-139
Received:
8 July 2025
Accepted:
22 July 2025
Published:
7 August 2025
Abstract: To improve the vibration reduction system applied to spherical water storage tanks under seismic conditions, a new origami-based hydraulic damper was proposed for use in tuned mass damper (TMD), replacing conventional cylinder-type hydraulic dampers. The configuration of the origami-based hydraulic damper, the vibration control mechanism of the TMD system using it, and tuning principle were examined. Shaking table experiments were conducted in the laboratory using a verification test apparatus that included an actual developed spherical water tank and a TMD system with an origami hydraulic damper. The tests were divided into cases based on different seismic waves and excitation directions. Shaking table experiments were conducted using actual earthquake waves from the Fukushima, El Centro NS, and Taft NW events. By comparing the measured response acceleration values, vibration reduction effects of 53.53%, 33.72%, and 36.63%, respectively, were obtained. Furthermore, to investigate the influence of the excitation direction on the vibration control performance, additional tests were conducted using the Fukushima earthquake wave with excitation angles varied in 15° increments. The tests demonstrated an average vibration reduction effect of 54.81% in terms of response acceleration. The results of these experimental measurements confirmed the stable vibration control performance of the proposed TMD system with an origami-based hydraulic damper applied to spherical water storage tanks.
Abstract: To improve the vibration reduction system applied to spherical water storage tanks under seismic conditions, a new origami-based hydraulic damper was proposed for use in tuned mass damper (TMD), replacing conventional cylinder-type hydraulic dampers. The configuration of the origami-based hydraulic damper, the vibration control mechanism of the TMD...
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,
Zhu Haolin
