| 摘要 |
The proposed triaxial compression machine contains a casing, a rectangular chamber with movable walls, in which a sample shall be installed, three double-acting hydraulic cylinders, which are installed at orthogonal walls of the casing, three hydraulic systems, pressure transducers for the hydrauliccylinders, displacement transducers for the rods of the hydraulic cylinders, and stress transducers for the sample. The stress transducers are used for generating feedback signals. Each hydraulic system contains a circuit for generating static load and a circuit for generating dynamic load. The circuit for generating static load contains a throttling directional-control hydraulic valve and a pneumohydraulic accumulator. The circuit for generating dynamic load contains an electrohydraulic booster and a correcting unit.
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