Engineering summary
Full specifications of QuakeLogic's 40-ton uniaxial and biaxial hydraulic shake tables: 4 m x 4 m platform, ±350 mm stroke, 1000 mm/s, 20 Hz, 600 kN actuators and a 300 LPM, 160 kW HPU.
In short: QuakeLogic's 40-ton hydraulic shake tables carry a 40-ton (392 kN) payload at 1 g on a 4000 x 4000 mm platform with ±350 mm stroke in X and Y, 1000 mm/s peak velocity, 20 Hz bandwidth, up to 2 g under 20 tons and 1200 kN·m overturning moment. Double-ended 600 kN and 525 kN actuators, a 300 LPM, 160 kW hydraulic power unit and sub-10 ms PID control drive it.
QuakeLogic is proud to introduce cutting-edge 40-ton uniaxial and biaxial hydraulic shake tables, designed for a wide range of seismic testing applications. These advanced tables are engineered for precision, power, and versatility, allowing researchers and engineers to simulate earthquake forces on large structures with high fidelity. Whether you are involved in civil engineering, aerospace, automotive testing, or seismic research, QuakeLogic’s shake tables provide the reliable performance you need to push the boundaries of seismic testing.
Key Specifications
1. Load Capacity
- Maximum Payload: 40 tons (392 kN) at 1g acceleration.
- Table Dimensions: 4000 mm x 4000 mm.
2. Motion and Speed
- Effective Stroke: ±350 mm for both X and Y axes, ensuring large displacement capacity for simulating real-world seismic events.
- Maximum Operating Speed: 1000 mm/s.
- Continuous Operating Speed: 200 mm/s.
3. Performance and Frequency
- Maximum Operating Frequency: 20 Hz.
- Maximum Table Acceleration: Up to 2g for payloads less than 20 tons.
4. Overturning Moment Capacity
- Overturning Moment: 1200 kN.m (for a 40-ton payload at 3-meter height), ensuring stability and performance even during extreme seismic events.
Advanced Hydraulic System
QuakeLogic’s 40-ton biaxial shake table is powered by an advanced hydraulic system, designed to provide seamless performance during demanding tests. Key features of the hydraulic system include:
- Hydraulic Actuators: Designed for reliability, each actuator has a force capacity of 600 kN and 525 kN, with double-ended cylinders providing ±350 mm stroke. These actuators come with integrated position transducers (0.001 mm resolution) and load cells for precise control.
- Hydraulic Power Unit (HPU): Equipped with a 300 LPM variable displacement pump and a 3000-liter tank with 160 kW installed power. The HPU is capable of running earthquake simulations with peak performance while maintaining optimal energy efficiency.
- Accumulator Skid: With a 450-liter oil and 1800-liter nitrogen capacity, the system ensures smooth hydraulic operation during high-speed movements and complex earthquake simulations.
Control and Simulation Capabilities
The multi-axes control system is designed to offer real-time, high-fidelity control of the shake table. With closed-loop PID control and 16-bit analog inputs/outputs, the system ensures accurate position and force control with a response time of less than 10 ms. This allows the shake table to simulate even the most demanding seismic scenarios, ensuring that the data generated during testing is both accurate and reproducible.
Key Features of the Control System:
- Real-Time Earthquake Data Simulation: Load real earthquake data for realistic seismic testing.
- Advanced Signal Generator: Customizable sine waves, advanced modes, and unlimited profile length ensure flexibility.
- Data Visualization and Analysis: FFT, response spectrum, and baseline correction are integrated into the user interface for easy data analysis.
- Advanced PID Tuning: Model-based tuning for precise control during complex testing scenarios.
Applications
The 40-ton uniaxial and biaxial shake tables are versatile enough to serve multiple industries:
- Civil Engineering: Testing the resilience of building structures, bridges, and other critical infrastructure components under simulated earthquake conditions.
- Aerospace and Automotive: Simulating vibrations and seismic forces on sensitive components to ensure durability and safety.
- Energy Sector: Testing equipment used in power generation and transmission to verify their performance under seismic stress.
- Research Institutions: Universities and labs can use these shake tables to conduct cutting-edge research on seismic behavior and new materials.
Installation and Maintenance
The system’s modular design ensures straightforward installation, even for complex configurations. Key components such as the THK linear guides offer low dust generation and noise reduction, making the system well-suited for laboratory environments. Additionally, maintenance is simplified with filter replacement and hydraulic system checks easily integrated into the operational workflow.
For more information, visit the product page by clicking large-scale QuakeLogic shake tables.
Why Choose QuakeLogic?
- Proven Performance: QuakeLogic’s shake tables have been installed and are in use at leading research facilities worldwide.
- Custom Solutions: Tailored configurations to meet specific testing needs, whether uniaxial or biaxial.
- Expert Support: Our team works closely with clients to ensure successful system installation, operation, and ongoing maintenance, offering full lifecycle support.
About QuakeLogic
QuakeLogic is a leading provider of advanced seismic monitoring solutions, offering a range of products and services designed to enhance the accuracy and efficiency of testing, data acquisition, and analysis.
Contact Information:
- Email: sales@quakelogic.net
- Phone: +1-916-899-0391
- WhatsApp: +1-650-353-8627
- Website: www.quakelogic.net
For more information about our products and services, please visit our website or contact our sales team. We are here to help you with all your testing and monitoring needs.
Key Takeaways
- Payload 40 tons (392 kN) at 1 g on a 4000 x 4000 mm table; 2 g below 20 tons; 20 Hz maximum.
- Stroke ±350 mm on both X and Y axes, 1000 mm/s maximum velocity, 200 mm/s continuous, and 1200 kN·m overturning moment at 3 m height.
- Double-ended actuators rated 600 kN and 525 kN carry 0.001 mm position transducers and load cells for closed-loop force and position control.
- HPU: 300 LPM variable displacement pump, 3000-liter tank, 160 kW installed power; accumulator skid holds 450 L oil and 1800 L nitrogen.
- Control is closed-loop PID with 16-bit I/O and under 10 ms response; software includes earthquake replay, FFT, response spectrum and baseline correction.
Frequently Asked Questions
The 40-ton biaxial shake table has a 4000 x 4000 mm platform, 40-ton (392 kN) payload at 1 g, ±350 mm stroke on X and Y, 1000 mm/s maximum and 200 mm/s continuous velocity, 20 Hz maximum frequency, up to 2 g acceleration for payloads under 20 tons, and 1200 kN·m overturning moment for a 40-ton load at 3 m height. THK linear guides support the platform.
The 40-ton shake table is driven by a hydraulic power unit with a 300 LPM variable displacement pump, a 3000-liter oil tank and 160 kW installed power. An accumulator skid with 450 liters of oil and 1800 liters of nitrogen supplies peak flow during high-speed motion. Double-ended cylinders rated 600 kN and 525 kN provide the ±350 mm stroke, each with integrated 0.001 mm position transducers and load cells.
A uniaxial shake table moves the specimen along one horizontal axis, which is sufficient for many component and planar structure tests and costs less in actuators and control hardware. A biaxial shake table adds a second horizontal axis (X and Y), so it can reproduce the two horizontal components of a recorded earthquake simultaneously, which is required for realistic testing of full buildings, bridges and torsionally irregular structures.
The multi-axis controller loads recorded earthquake acceleration time histories and tracks them with closed-loop PID control using 16-bit analog inputs and outputs and a response time under 10 ms. Model-based PID tuning handles payload-dependent dynamics. The interface also provides a signal generator with sine and custom profiles of unlimited length, plus FFT, response spectrum and baseline correction tools for checking the fidelity of each run.
Civil engineering labs use 40-ton shake tables to test buildings, bridges and infrastructure components under simulated earthquakes. Aerospace and automotive groups qualify sensitive assemblies against vibration, the energy sector verifies power generation and transmission equipment under seismic stress, and universities run research on structural behavior and new materials. QuakeLogic tables are installed at research facilities worldwide.
Related Articles
Need help with a project? QuakeLogic designs and supplies seismic monitoring, earthquake early warning, structural health monitoring, infrasound, and shake table systems. Browse QuakeLogic products or contact our engineering team with your site, structure, or test requirements.
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Topic cluster
Related engineering knowledge areas
- Earthquake EngineeringSeismic hazard, ground motion, structural response, fragility, and resilience guidance.
- Structural Health MonitoringMonitoring for bridges, buildings, dams, tunnels, industrial facilities, and resilient infrastructure.
- Earthquake Early WarningOn-site detection, alerting workflows, seismic switches, and critical infrastructure warning systems.
- Infrasound MonitoringLow-frequency acoustic sensing for environmental noise, blast, UAV, volcano, and defense applications.
Definitions and references
Terms, standards, and source cues
- seismic hazard: related to Earthquake Engineering in this QuakeLogic knowledge cluster.
- ground motion: related to Earthquake Engineering in this QuakeLogic knowledge cluster.
- SHM: related to Structural Health Monitoring in this QuakeLogic knowledge cluster.
- damage detection: related to Structural Health Monitoring in this QuakeLogic knowledge cluster.
- earthquake early warning: related to Earthquake Early Warning in this QuakeLogic knowledge cluster.
- seismic switch: related to Earthquake Early Warning in this QuakeLogic knowledge cluster.
- infrasound sensors: related to Infrasound Monitoring in this QuakeLogic knowledge cluster.
- low-frequency noise: related to Infrasound Monitoring in this QuakeLogic knowledge cluster.
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