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structure magazine | pioneering shaking table continues to

structure magazine | pioneering shaking table continues to

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 Shaking Table foundation and the table’s transverse ribs

us6189385b1 - shaking table and method of controlling the

us6189385b1 - shaking table and method of controlling the

A shaking table according to the present invention comprises a table for loading a specimen under test placed on a base via bearings, an oil-hydraulic actuator for shaking the table …

(pdf) servo system of 6 dof electro-hydraulic shaking table

(pdf) servo system of 6 dof electro-hydraulic shaking table

Electro-hydraulic shaking table (EHST) is a useful experimental apparatus to real-time replicate the desired acceleration vibration signal for evaluating the performance of the tested specimen

real-time hybrid test using two-individual actuators to

real-time hybrid test using two-individual actuators to

Nov 04, 2020 · The hydraulic actuator generates a partial deformation of a target model, and the shaking table imposes a partial dynamic action of a target model. The RTHS is focused on seismic responses of a single-story RC frame building model …

shaking table - soil mechanics laboratory

shaking table - soil mechanics laboratory

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)

(pdf) shaking table dynamics: results from a test-analysis

(pdf) shaking table dynamics: results from a test-analysis

It is well known that the dynamic identification of a model fixed on a shaking table is a crucial task, due to the interaction between the complex dynamic actuators system and the model itself

a pneumatic shaking table and its application to a

a pneumatic shaking table and its application to a

Nov 10, 2012 · The shaking tables that are used in earthquake engineering are normally driven by hydraulic actuators, which require high maintenance and operation costs. In some studies, when it is only desirable to conduct small-scaled model tests, a pneumatic shaking table can be considered as an alternative to a hydraulic shaking table

nees @ uc san diego - shake table specifications

nees @ uc san diego - shake table specifications

Shake Table Specifications. Full Size. The design criteria and main specifications of the shake table system were dictated by consideration of a number of potential research applications involving large or full-scale shake table experiments and a variety of earthquake ground motions. The resulting performance parameters including specifications for actuator stroke, velocity and …

development of the shaking table and array system

development of the shaking table and array system

Apr 10, 2019 · In 2011, Beijing University of Technology began to prepare to construct nine-subarray system (shown in Figure 5) and has built 12 sets of actuator building block array systems till 2006, which was increased to 16 sets in 2009 and is now the array system with the largest number of single-array system in the world.Each single shaking table is composed by …

shaking table test make it yourself

shaking table test make it yourself

May 08, 2020 · The shaking table consists of a table and an actuator that moves the table. Fix the device to be tested for the table and test it while moving with the actuator. The test results vary depending on how the actuator is moved

linear actuators:

linear actuators:

Homend DC 12V 12 Inch Stroke Linear Actuator with Mounting Bracket 300MM 6000N/1320LB Maximum Load for Recliner TV Table Lift Massage Bed Electric Sofa Linear Actuator 4.8 out of 5 stars 9 $45.95 $ 45 . 95

real-time hybrid simulation of a single-span girder bridge

real-time hybrid simulation of a single-span girder bridge

Apr 12, 2021 · This paper recounts a real-time hybrid simulation (RTHS) that employed a shake table coupled with an actuator to evaluate the seismic performance of a single-span girder bridge. The test specimen for this RTHS was a scaled single-span girder bridge, which was subjected to Loma Prieta excitation in the test. In the RTHS, the bridge specimen, which lacked mass on top …

uc berkeley shaking table

uc berkeley shaking table

The shaking table is driven horizontally by eight 75,000-lb capacity hydraulic actuators and vertically by four 75,000-lb capacity actuators. All of the hydraulic actuators are located in the chamber beneath the shaking table. The actuators have swivel joints at each end allowing for rotation, which accommodates the components of motion perpendicular to their primary …

multi-axis shaking table (mast) - instron

multi-axis shaking table (mast) - instron

Multi-Axis Shaking Table (MAST) The Multi-Axis Shaking Table (MAST) are designed for vibration testing of a wide range of test specimens. Vibration input can be generated in up to 6 degrees of freedom (6-DOF), either individually or simultaneously. MAST-Systems can be used for a variety of durability, performance and squeak and rattle applications

shaking table | civil and environmental engineering

shaking table | civil and environmental engineering

Description Single axis shaking table composed of a light weight aluminum table attached to an MTS 244 hydraulic actuator. Scheduled for instructional use

model-based motion control for multi-axis servohydraulic

model-based motion control for multi-axis servohydraulic

Aug 01, 2016 · The shaking table is an essential testing tool in the development of earthquake resistant buildings and infrastructure, so improving its performance is an important contribution to saving lives. Currently the bandwidth and accuracy of shaking tables is such that earthquake motion often cannot be replicated with the desired fidelity

proportional solenoid actuators: general technical

proportional solenoid actuators: general technical

Most solenoids are simple 2‐position ‘digital’ devices, the proportional solenoid actuator however is an analogue device capable of incremental positioning. The design of the polepiece of the proportional solenoid results in a force being developed which is constant over some displacement (the ‘control stroke’), and which is

electric actuators | smc corporation of america

electric actuators | smc corporation of america

The LEP family of mini electric actuators includes a rod type and a slide table type. Each mini electric actuator design is built around the same motors, drives and bodies. Each model is lightweight, less than 1-1/2 lb, and compact enough to fit in the palm of your hand. The LAT3 Card Motor miniature electric actuator is about the size of a

linear dynamic modeling of a uniaxial servohydraulic

linear dynamic modeling of a uniaxial servohydraulic

The sensitivity results reveal: (a) a potential strong dynamic interaction between the oil column in the actuator and the payload, and (b) the very important effect of the servovalve time delay upon the total shaking table transfer function

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