Measuring device and method for three-point bending mechanical properties

Abstract

The invention relates to a measurement device and a measurement method for three-point bending mechanical properties. A sliding chute is formed in a base. Two sliding seats are connected to the sliding chute through rollers in a sliding way. Guide rods are connected into the sliding seats through conical bearings. Cushion blocks are arranged at the front ends of the guide rods, and the rear ends of the guide rods are adjustably connected with spring baffles. Springs are arranged on the guide rods between the spring baffles and support plates. Lateral load sensors are arranged between the springs and the spring baffles. Displacement sensors are arranged between the base and the sliding seats. In an experiment, a loading head is pressed down to force the sliding seats to axially move towards to a middle part along the sliding chute, axial pressure on the support plates is detected by the lateral load sensors, axial displacement is detected by the displacement sensor, and bending force is measured by the loading head. The measurement device is simple and rational in structure, convenient to machine and disassemble and high in intuitiveness, can be used for monitoring three-point bending mechanical tests in test pieces with different end faces and different lengths in real time, can be operated flexibly and simply, and has a good effect, a broad market application prospect and remarkable economic benefits and social benefits.

Description

technical field [0001] The invention relates to a three-point bending mechanics test method and device for multi-shape specimens under the action of static loads, which are mainly used in bending experiments of mechanical parts, civil structures, etc., such as beams, rods, plates, and tubular specimens under static loads mechanical testing. Background technique [0002] Three-point bending test equipment is often used in some professional laboratories of mechanical parts and engineering structures. It is easy to install and debug, easy to operate, obtain high-precision experimental data, and improve the accuracy and reliability of the experiment. In the three-point bending test, the experimental device and test method are an important guarantee for the accurate data of the specimen. [0003] At present, there are many mechanical testing methods and devices for three-point bending, but often specimens with different phase shapes, or specimens with the same shape and differen...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problems of the existing three-point bending mechanical testing device with single functions and unclear testing methods, the present invention provides a measuring device and method capable of realizing three-point bending mechanical properties of multi-shape and multi-size test pieces. The device and method can install and test test pieces of different shapes such as plates, rods, beams, and pipes on the same equipment device, avoiding repeated replacement of experimental devices, and at the same time, according to the characteristics of different test pieces, this method can accurately Realize the measurement of relevant experimental data

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