The shaking table can reproduce any ground motion, from synthetic motions to real earthquake records. The hydraulic actuator is capable of producing a stroke of +/- 75 mm. The seismic motion can be applied to all three directions (x , y, and z). The actuators have a servo-valve controlled by an analog inner-loop control system (displacement

Jan 28, 2018 directions (X,Y) in a strict budget. We have defined the problem, gathered information, generated alternatives, evaluated potential solutions, and have a proposed design for the machine. ... An affordable shaking table that accurately emulates earthquake forces could be

The key of E-Defense is a shaking table, which is the world’s largest threedimensional table 20 m long and 15 m wide as - shown in Fig1.. The remarkable feature of the table presented in Table 1 is the capability to reproduce ground motions recorded in the 1995 Kobe earthquake for a 12MN structure - by 10 horizontal and 14 vertical actuators

Pok mon X & Y - Wild Encounter Changes. Like the previous generation, Pok mon X & Y gives a few new ways for you to encounter Pok mon other than the standard walking around in grass, caves, flowers and surfing/fishing. Hordes. The most notable change is the Horde encounter. Hordes have their own encounter table and feature a variety of

Nov 26, 2020 The ESRW structure was reinforced with two externally-hung self-centering rocking walls in each principal direction. The cantilever walls, shown in Figs. 3 and 4, were 800 mm wide in the X direction, 1400 mm wide in the Y direction, 80 mm thick, and extended the 4000 mm height of the structure. Internal reinforcement is summarized in Table 1

recovery of Cr2O3 in concentrate fraction of shaking table. Fig. 3 explain the effect of the process parameters of wilfley table on grade of concentrate fraction. Fig. 3(a) shows the effects of wash water flow rate (X1) and deck tilt angle (X2) on grade of the concentrate fraction at center level of

Sep 07, 2017 Yan X, Yu H, Yuan Y, Yuan J (2015) Multi-point shaking table test of the free field under non-uniform earthquake excitation. Soils Found 55(5):986–1001. Article Google Scholar Yu H, Yuan Y (2014) Analytical solution for an infinite Euler–Bernoulli beam on a viscoelastic foundation subjected to arbitrary dynamic loads. Eng Mech 140(3):542–551

Mar 12, 2009 Y-axis vibration. i recently purchased an early 1990's Kiwa Excel 810 vertical mill. when i was checking it out i pushed hard on the table in the Y axis to check for backlash on an indicator and it started to vibrate (low humming noise). It stopped once i moved the y axis with the handwheel. I saw the machine cut various times and never saw

Structurally, the Shaking Table may be considered as a one-foot thick diaphragm stiffened by central transverse ribs that extend below the table’s bottom surface. The eight hydraulic actuators that drive X and Y motions, along with yaw, are attached between the

extracted through sweep tests applying to the shaking table accelerations of increasing frequency along the longitudinal x-direction and the transverse y-direction. The results are presented in Table 1. Table 1. Modal properties of the specimen Direction Natural Frequency (Hz)

e shaking table used a three-way electrohydraulic servo drive, with the following basic parameters: e maximum load is 30 tons, and the maximum displacement that can be achieved is 50mm in the Zdirection and 100mm in the X and Ydirections. e top of the shaking table is 5m 5m, the maximum speed in the three directions is 0.5m/s, and

Among the three shaking tables available from the Tamaris platform, Azal e is a plate (6 x 6 m 2 , 25 tons) moved by 8 hydraulic actuators of 100-ton force each and 250-mm displacement range

The shaking table tests were carried out at the Earthquake Engineering Center of the University of Bristol. The models were designed and built to be representative of steel buildings designed according to the Eurocodes 3 and 8 (EC3 and EC8). Both 1/5 scale models have a rectangular layout of 2000mm (x-direction) by 1500mm (y-direction)

Mar 01, 2021 There are two profiles. A1–A4, A11–A14, A21–A24, and A25–A28 were used to monitor the seismic response of the soil. In the experiment, a longitudinal vibration test, in which the shaking table vibrates in the X direction, and a transversal vibration test, where the shaking table vibrates in the Y direction, were

Similitude relationship Dynamic similitude equilibrium equation SSSS Eal /1ρ = Based on the capacity, the size of the shaking table and the height of the laboratory, S l was chosen as 1/35. Therefore the model was built with a total height of 7.429m. Empirically, S E was firstly considered between 1/5~1/3 and then determined to be 0.30 according to the material

For these buildings in China, a detailed study, sometimes including shaking table testing, is required to verify the safety and rationality of their design. This paper presents results of a study performed for a high‐rise building with a large space in the ground floor and large openings in elevation. The maximum responses of acceleration and

The shaking table test was conducted using a tri-directional shaking table with dimensions of 5.0 m 5.0 m, a maximum capacity of up to 300 kN, and maximum acceleration of 2.0 g. The reasonable design of the similarity relationship for the scale model played a significant role in reflecting the actual structural performance of the

As an exemple, the Azal e shaking table (6 x 6 meters square table) operating area is presented on Figure 1: the oil supply (pumps, pipes and accumulators) limits the velocity ([5])

Apr 05, 2015 The aim of this work is to reach a better understanding of the seismic behaviour of historic three-leaf stone masonry buildings with timber floors, before and after interventions. For this purpose, shaking table tests were performed on a building model (scale 1:2). Initially, the dynamic characteristics of the model were identified. Subsequently, biaxial earthquake tests were performed with

ResearchArticle Earthquake Ground Motion Matching on a Small Electric Shaking Table Using a Combined NN-PDFF Controller Selma H. Larbi ,1 Nouredine Bourahla,2 Hacine Benchoubane,3 Khireddine Choutri,3 and Mohammed Badaoui4 1LGMGCLaboratory,CivilEngineeringDepartment,UniversityofSaadDahleb,Blida,Algeria

displacement in shaking table test and practical engineering. Keywords: high-rise building, vision-based displacement test method, measurement technique, shaking table test. 1. Introduction Structural health under various vibration has been a cutting-edge technology and gained increasing concerns, especially in civil engineering community [1]