Electromagnetic vibration table equipment for studying the seismic performance of building materials

Electromagnetic vibration table equipment for studying the seismic performance of building materials

1、 Product Overview
This product is a high-precision electromagnetic vibration testing system designed specifically for the study of seismic performance of building materials. It provides reliable mechanical performance testing and data support for building structural components, new building materials, and seismic isolation devices by simulating real seismic waves and vibration environments. It is a core equipment for scientific research, quality control, and product development in the field of architecture.

2、 Main purpose
Mainly used to test the dynamic response, fatigue life, failure mechanism, and overall seismic performance of various building materials (such as concrete test blocks, steel bars, structural steel, masonry, composite materials) and small structural nodes (such as beam column connectors, dampers, and isolation bearings) under seismic loads.

3、 Working principle
The system is based on the principle of electromagnetic induction. The driving coil (moving coil) is fixed at the bottom of the table and placed in a strong magnetic field. When the alternating current output by the power amplifier passes through the driving coil, the coil is subjected to Lorentz force in the magnetic field, which drives the table and specimen to vibrate accurately according to the input signal (such as seismic waves, sine waves, random waves).

Electromagnetic vibration table equipment for studying the seismic performance of building materials

4、 Main functions and features

• Function:Complete sine sweep frequency, fixed frequency test, random vibration, typical seismic wave reproduction, and impulse response spectrum testing.

• Features:

1. High fidelity control:Adopting fully digital closed-loop control technology to ensure high-precision reproduction of complex waveforms such as seismic waves.

2. Large displacement design:To meet the seismic testing requirements of low-frequency large displacement, the platform has a large displacement stroke (such as ± 50mm or higher).

3. High load capacity and expansion:The countertop is sturdy, with strong load-bearing capacity, and provides T-shaped slots or threaded holes for easy installation of large and irregular building specimens.

5、 Technical features

1. Broadband range:The frequency range covers DC-2000Hz and above, balancing low frequency, high energy, and rich frequency spectrum.

2. High reliability:Adopting a high-strength dynamic coil structure and an efficient air/water cooling system to ensure stability during long-term high load operation.

3. Security:Equipped with multiple hardware protection mechanisms such as emergency stop, over displacement, over-current, and over temperature to ensure human-machine safety.

6、 Application scenarios

• Civil engineering laboratories in universities and research institutes.

• Institute of Building Science and Institute of Earthquake Engineering.

• The R&D and quality inspection center of building material production enterprises.

• A performance verification platform for manufacturers of shock absorbers and isolation devices.

7、 Technical parameters

• Thrust:5kN -50kN (optional)

• Frequency range:DC - 2000 Hz

• Displacement:±50 mm

• Acceleration:1000 m/s ² (unloaded)

• Table size:600 × 600 mm (customizable according to requirements)

• Control method:All digital triple loop control

8、 Structural Design
Adopting an integrated rigid structure, it consists of a platform, power amplifier, and control system. The main body of the platform is a magnetic circuit system composed of high-strength magnetic materials, and the moving coil is vacuum cast with epoxy resin, which is lightweight and highly rigid. The tabletop is precision machined to ensure flatness and ease of installation.

9、 Installation and Debugging
The equipment needs to be installed on a stable concrete foundation or large foundation mass block to isolate external interference and absorb reaction forces. Our company provides a professional technical team responsible for on-site installation, horizontal calibration, system integration and operation training to ensure that the equipment achieves performance.