Visual testing device of high-frequency roadbed vibration under plane strain condition
A technology of plane strain and high-frequency vibration, applied in the direction of measuring devices, using sound waves/ultrasonic waves/infrasonic waves to analyze solids, instruments, etc. Problems such as complex mechanical behavior of media
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[0024] Such as figure 1 As shown, the device includes three parts: High-frequency loading device: This device can simulate the dynamic load generated by the high-speed train during the running process by adjusting parameters such as loading amplitude and frequency. Visual vibration monitoring and analysis device: This device uses a high-speed camera to record image data, combined with high-speed image processing software, to analyze the model's vibration deformation and internal stress wave propagation rules under high-frequency loads. Energy dissipation monitoring device: This device is composed of acceleration sensor, displacement sensor and data acquisition instrument. Acceleration sensors are placed at the junction of various layers of bulk materials in the subgrade model. By measuring the vibration time-history curves of bulk materials at different interfaces of each layer, the energy of vibration waves can be back-calculated. By comparing the data of each interface, the...
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