With the continuous increase in performance requirements for modern vehicles, more and more rubber components are being used in automobiles, mainly including powertrain mounts, various types of bushings, crankshaft torsional vibration dampers, and exhaust pipe hangers. Among these, the powertrain mount system primarily serves to support, limit displacement, isolate vibrations, and reduce noise in the vehicle.

Component deformation affects component performance. In fracture mechanics analysis, the stress intensity factor of a cracked component can be determined based on compliance. In mechanical vibration studies, dynamic stiffness is defined as the dynamic force required to produce a unit amplitude in a structure. For a single-degree-of-freedom system subjected to harmonic excitation force.

Xi'an LETRY specializes in manufacturing dynamic stiffness testing systems, primarily used for testing parameters such as static and dynamic stiffness, damping coefficient, damping angle, and fatigue resistance of elastomers, rubber elastomers, and vibration dampers. This system can perform various tests under sine waves, triangular waves, square waves, trapezoidal waves, ramp waves, and user-defined waveforms.

Main Parameters of the Dynamic Stiffness Testing System

1. Maximum dynamic test force: 5kN; 1kN; 15kN

2. Dynamic load value fluctuation:

Average load fluctuation: ±0.5%, force sensor accuracy: 0.5%

Load amplitude fluctuation: ±2%

3. Displacement measurement range: ±0.01——50mm; resolution: 0.1%; accuracy: 0.001mm

4. Test frequency: 0.01—200Hz

5. Actuator stroke: ±50mm

6. Test waveforms: sine wave, triangular wave, square wave, ramp wave, sawtooth wave, various combined waves, externally input acquisition waves, and other waveforms

7. Test software supports Windows 10 and various versions of the Windows operating system. The computer displays real-time static load, dynamic load, test frequency, and fatigue cycles during the test. It dynamically displays real-time curves, stores data (allowing automatic storage of data and graphs for any test phase at set time intervals), outputs test reports (test data can be imported into software such as Excel and Word), and other functions. Test data and graphs can be infinitely zoomed in either entirely or partially. Test data is stored in a database format, and all stored content can be reproduced. Previous test data can be retrieved for analysis, and users can perform secondary data processing, editing, and adding test report formats.

8. Equipped with intelligent safety measures such as overload, fracture, and displacement protection.

9. Features the ability to set up multiple modules for fatigue test management.