Lic actuator employed inside the experiment (maximum capacity 50 kN, manufactured Figure
Lic actuator utilized within the experiment (maximum capacity 50 kN, manufactured Figure 18. The hydraulic actuator used within the experiment (maximum capacity 50 kN, manufactured by MTS). by MTS).The specimens were designed in order that the deformation of each ends was suppressed The specimens have been made in order that the deformation of each ends was suppressed and rotated, and all deformation was produced the the friction surface supplied with the and rotated, and all deformation was produced on on friction surface supplied together with the friction pad. Experiments have been carried out one hundred instances utilizing a cyclic load, in accordance with the variable via the actuator (see Table 3). Experimental parameters have been divided into excitation frequency, excitation displacement, and bolt tightening force. Within this experiment, the results with the 3 variables were obtained. Initial, in an effort to have an understanding of theBuildings 2021, 11,17 offriction pad. Experiments have been carried out 100 instances making use of a cyclic load, based on the variable by way of the actuator (see Table three). Experimental parameters have been divided into excitation frequency, excitation displacement, and bolt tightening force. Within this experiment, the outcomes from the 3 variables have been obtained. 1st, in order to understand the response characteristic, in accordance with the excitation frequency, the actuator displacement was mm, the tightening force of your bolt was fixed at 600 N-mm, and also the excitation frequency varied from 0.5 Hz to 4 Hz. Next, to investigate the response qualities of the damping device, in accordance with the change of displacement, we set the excitation frequency to 0.5 and two Hz, fixed the bolt tightening force to 1400 N-mm, and adjusted the displacement. Ultimately, to be able to examine the response characteristics, as Compound 48/80 supplier outlined by the tightening force in the bolt, experiments had been performed by adjusting the tightening force of bolts as much as 600 to 4500 N-mm, keeping the displacement and frequency fixed.Table 3. Variables of rotary damper performance test. Experimental Variable Oscillation Frequency (Hz) 0.5 1 2 3 four 0.five 0.five 0.five 0.five 0.five 2 2 2 2 two 0.five 0.five 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.five 0.5 0.five 0.five Actuator Displacement (mm) Tightening Force of Bolt (N-mm) 600 600 600 600 600 1400 1400 1400 1400 1400 1400 1400 1400 1400 1400 0 800 1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 3000Change in frequency 0 0 Size of deformationChange of tightening force4.2. Experimental Outcomes and Variable Evaluation In this experiment, the load measurement path from the load cell along with the Nimbolide Description rotation center of your damping device usually are not normally perpendicular. As shown in Figure 19, the rotational angle from the attenuator changes the length in the angle of rotation () and vertical height (h a ). Therefore, the moment acting around the rotating friction damper is calculated by using the correction equation as well as the vertical deformation (h a ) and rotation angle () on the attenuator. Equation (2) could be the moment of the friction surface generated by the external force on the damper. M f = F ha (2)Buildings 2021, 11,0.five 0.five 0.5 0.5 0. 2400 2600 2800 3000 18 of 224.two. Experimental the forceand Variable towards the damping device via the actuator, and Outcomes transmitted Evaluation exactly where Factual could be the force F acting on the friction surface from the actual damper the load cell and also the rotatio In this experiment, the load measurement direction of has the relationship of Equation (3): center from the damping device will not be always perpendicul.