Structure mechanics combined experimental device

Abstract

The invention relates to the field of experiment-teaching equipment of 'Structural Mechanics' in colleges and universities; the products of the invention are mainly applied to the experiment teaching of rigid frames, trusses and combined structures in beam structures; the invention is characterized in that: a node plate adopts a split structure, the trusses are arranged between two node plates, a weak connection with a particular shape is arranged on an articulated node plate, and a relatively ideal articulating node can be obtained by utilizing the mechanical property that the weak connection can transmit a relatively large axial force but only can transmit a very small bending moment. By choosing a reasonable connecting way between a rigid node plate and the trusses, the influences on the testing result made by the size effect of the rigid node plate is reduced and a relatively ideal rigid node can be obtained. The node property and the support property can be transferred conveniently. All the tests can realize electrical testing by using the computer data collecting and analyzing. The application of the computer data collecting and analyzing system not only facilitate data collection, but also enriches the experiment-teaching means, which is beneficial for carrying out open experiment-teaching.

Description

technical field [0001] The invention relates to the field of experimental teaching equipment for "Structural Mechanics" in colleges and universities. The product is mainly used in the experimental teaching of rigid frames, trusses and combined structures in bar structures. Background technique [0002] The main task of structural mechanics is to study the internal force and deformation of the structure under the action of external force and other external factors, the strength, stiffness, stability and dynamic response of the structure, and the composition law of the structure according to the principles of mechanics. The main research object of "Structural Mechanics" in colleges and universities is the rod structure, which is composed of rods, nodes, supports and so on. In theoretical analysis, the rod is simplified as an axis with a certain rigidity, which can bear bending moment, axial force and shear force; the joints and supports are simplified as connection points with...

AI Technical Summary

Problems solved by technology

[0004] 2. The ideal hinge point can only bear the axial force but not the bending moment, but the ideal hinge point does not exist. Due to the existence of friction and other reasons in actual engineering, the hinge point can not only bear a certain bending moment, but also As the axial force increases, the bending moment it can withstand also increases.

Images