An auxiliary test device dedicated to the study of the bending performance of small rods

Abstract

The invention discloses an auxiliary test device specially used to study bending performance of small bars, the auxiliary test device includes a base with supporting function, both sides on the top of the base are provided with an I-shaped guide rails, load application mechanisms are arranged left-right symmetrically inside the guide rail on the upper part, bar clamping mechanisms are arranged left-right symmetrically at the middle of the guide rail, and vertical deflection measurement systems are arranged left-right symmetrically outside the guide rail; and the load application mechanisms and the bar clamping mechanisms can slide along the guide rail right and left. Advantages are that: 1) bars with different lengths, different heights of sections can be clamped, the bending performance of the small bars with different lengths, different heights of sections can be studied, and ideal fixed constraint can be formed at both ends of the bars; 2) a plurality of adjustable concentrated loads can be applied to any position in the upper end surface of a bending bar along the axial direction of the bending bar; 3) vertical deflection of multi points at any position in the upper end surface of the bending bar can be simultaneously detected by a vertical deflection measurement device along the axial direction of the bending bar.

Description

technical field [0001] The invention relates to the field of mechanical performance research, in particular to an auxiliary test device specially used for the research of the bending performance of small rods. Background technique [0002] Since the launch of the National Structural Design Competition in 2005, the choice of materials for small and medium-sized structural members has gradually expanded from paper materials to bamboo, wood and concrete. There are also more and more structural forms inside the rod. However, no systematic research has been conducted on the flexural performance of structural members in the structural design competition. Therefore, the design of the model lacks theoretical basis. [0003] Most of the existing research devices are limited to the study of the bending performance of large rods under simply supported conditions. When studying the bending performance of the rod, first place the two ends of the rod to be studied on the support as sim...

AI Technical Summary

Problems solved by technology

[0004] In terms of research on the bending performance of small rods, due to the small load required for the rods and the lack of corresponding displacement measurement systems, there are few experimental studies on the bending performance of small rods.

However, due to the limitations of the existing research devices, the bending performance of small rods cannot be studied, so an auxiliary test device for the research on the bending performance of small rods is proposed.

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