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Experimental device for comparing internal force properties of static and hyperstatic structures

A technology of structural internal force and comparative experiment, applied in the direction of measuring device, machine/structural component testing, measuring force, etc., can solve the problem that there is no comparison of internal force between statically indeterminate structure and hyperstatically indeterminate structure, and cannot better explain hyperstatically indeterminate structure characteristics and internal force characteristics, etc., to achieve the effect of strengthening intuitive judgment, improving hands-on ability, and improving learning interest

Inactive Publication Date: 2009-09-02
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, even if there is an experimental device for the internal force characteristics of a statically indeterminate structure, it is only for a single statically indeterminate structure, without comparing the internal force characteristics of a statically indeterminate structure with a statically indeterminate structure, and cannot better explain the structural characteristics and internal force characteristics of a statically indeterminate structure

Method used

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  • Experimental device for comparing internal force properties of static and hyperstatic structures
  • Experimental device for comparing internal force properties of static and hyperstatic structures
  • Experimental device for comparing internal force properties of static and hyperstatic structures

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] figure 1 The specimen 1 shown is two rigid frame structures of the same material and geometric size; the statically indeterminate structure 2 and the hyperstatically indeterminate structure 3 are on the same plane, and the hinge support 4 and the fixed support 5 are fixed on the plane. , the second roller support 6, 7 is connected by a horizontal connecting rod, and the loading handwheel 12 is vertically connected with the middle part of the horizontal connecting rod 9, so that the static structure 2 and the super static structure 3 are connected on the roller support 6, 7 Synchronously move up and down at the position, the size and direction of the movement of the roller support 6, 7 can be read from the scale 8 fixed beside the support, and the stress values ​​of the statically indeterminate structure 2 and the super statically indeterminate structure 3 under the condition of the support movement are given by The stress sensor 10 at the same position of the statically...

Embodiment 2

[0021] Figure 5 The test piece 1 shown is two beam structures of the same material and the same geometric size; the statically indeterminate structure 2 and the hyperstatically indeterminate structure 3 are on the same plane, and the hinge support 4 and the fixed support 5 are fixed on the plane. First, The second roller shaft roller support 6, 7 is connected by a horizontal connecting rod, and the loading hand wheel 12 is vertically connected with the middle part of the horizontal connecting rod 9, so that the static definite structure 2 and the super static definite structure 3 are placed on the roller support 6, 7 moves up and down synchronously, the size and direction of the movement of the roller bearings 6 and 7 are read from the scale 8 fixed next to the bearings, and the stress values ​​of the statically indeterminate structure 2 and the super-statically indeterminate structure 3 under the condition of bearing movement It is sensed by the stress sensor 10 at the same ...

Embodiment 3

[0023] Image 6 The test piece 1 shown is two arch structures of the same material and the same geometric size; the statically indeterminate structure 2 and the hyperstatically indeterminate structure 3 are on the same plane, and the hinge support 4 and the fixed support 5 are fixed on the plane. First, The second roller shaft roller support 6, 7 is connected by a horizontal connecting rod, and the loading hand wheel 12 is vertically connected with the middle part of the horizontal connecting rod 9, so that the static definite structure 2 and the super static definite structure 3 are placed on the roller support 6, 7 moves up and down synchronously, the size and direction of the movement of the roller bearings 6 and 7 are read from the scale 8 fixed next to the bearings, and the stress values ​​of the statically indeterminate structure 2 and the super-statically indeterminate structure 3 under the condition of bearing movement Perceived by the stress sensor 10 at the same posi...

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Abstract

The invention relates to the field of mechanics and particularly relates to a structural mechanic experiment. The technical problem to be solved by the invention is to combine a static structure and a hyperstatic structure in one internal force comparison experimental device to compare and detect the static structure and the hyperstatic structure visually. A hinge support (4) of the static structure (2) and a hinge support (5) of the hyperstatic structure (3) are fixed on the same plane. Roller supports (6 and 7) are connected by a horizontal connecting rod and a loading device (12) is connected with a horizontal connecting rod (9) to realize the up and down synchronous movement of the static structure (2) and the hyperstatic structure (3) at the positions of the roller supports (6 and 7). A ruler (8) is fixed besides the roller supports (6 and 7), and stress sensors (10) are arranged at the same positions on the two structures and are connected with data an acquisition device (11). The invention can present the properties of the static structure and the hyperstatic structure visually and quantitatively and can be widely used for experimental and demonstration equipment of universities and colligates of science and technology.

Description

1. Technical field: [0001] The invention relates to a device for structural mechanics experiments, in particular to an experimental device for comparing the internal force characteristics of statically indeterminate and hyperstatically indeterminate structures. 2. Background technology [0002] Most of the existing experimental devices for internal force characteristics of structures are designed for statically indeterminate structures. In structural mechanics, it is very important to understand the internal force characteristics of statically indeterminate structures. At present, even if there is an experimental device for the internal force characteristics of a statically indeterminate structure, it is only for a single statically indeterminate structure, without comparing the internal force characteristics of a statically indeterminate structure with a statically indeterminate structure, and cannot better explain the structural characteristics and internal force character...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M19/00G01L1/22G01M99/00
Inventor 王山山邱玲孙立国杨海霞徐炜
Owner HOHAI UNIV
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