Observation device for virtual work principle exhibition and teaching

A technology of virtual work principle and observation device, applied in the field of observation device, to achieve the effect of reducing initial deformation, accurate experimental data and reliable experimental data

Inactive Publication Date: 2015-04-29
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to overcome the defect that the existing teaching of the principle of virtual work can only be carried out in the form of theoretical inference and example explanation, and the teaching method of using a display device to let students verify the principle of virtual work has not yet been formed, the present invention provides a teaching method that can help students learn more An observation device for demonstration and teaching of the principle of virtual work that is easy to operate, simple, feasible, and versatile enough to understand basic concepts such as virtual displacement, virtual force, displacement state, force balance state, and virtual work principle

Method used

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  • Observation device for virtual work principle exhibition and teaching
  • Observation device for virtual work principle exhibition and teaching
  • Observation device for virtual work principle exhibition and teaching

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Embodiment Construction

[0034] refer to Figure 1 to Figure 3 , an observation device for displaying and teaching the principle of virtual work, comprising a mount 1 and a three-hinged arch arranged on the mount, the mount 1 includes a fixed plate 15 with an extension and a movable Adjust the chassis 16, the three-hinged arch includes a left arch 3 and a right arch 7, the tops of the left arch 3 and the right arch 7 are hinged by a hinge 4, the left arch 3 and the right The bottom ends of the arch pieces 7 are respectively provided with vertical bearing supports 2 with shafts, and the bottom ends of the left arch pieces 3 are pivotally connected to a vertical support frame 17 through the vertical bearing supports 2 with shafts. The vertical support frame 17 is fixed on the adjustable chassis 16; the bottom end of the right arch piece 7 is slidably arranged on the extension section through the vertical belt shaft bearing support 2; the left arch A screw mandrel is arranged between the bottom end of t...

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Abstract

An observation device for virtual work principle exhibition and teaching comprises an installation base and a three-hinge arch. The installation base comprises a fixed disc provided with an extending section and an adjustable base disc arranged on the fixed disc, the three-hinge arch comprises a left arch sheet and a right arch sheet, and the top end of the left arch sheet and the top end of right arch sheet are hinged through a hinge. The bottom end of the left arch sheet and the bottom end of the right arch sheet are each provided with a vertical bearing support provided with a shaft, the bottom end of the left arch sheet is connected to a vertical supporting rack through the corresponding vertical bearing support provided with the shaft, the vertical supporting rack is fixed to the adjustable base disc, and the bottom end of the right arch sheet is arranged on the extending section in a sliding mode through the corresponding vertical bearing support provided with the shaft. A lead screw is arranged between the bearing supports provided with the shafts, which are arranged at the bottom end of the left arch sheet and the bottom end of the right arch sheet, a strain gage dynamometer and a spiral micrometer head are arranged on the lead screw, and a digital display dial indicator is arranged at the arch top of the three-hinge arch.

Description

technical field [0001] The invention relates to an observation device used for displaying and teaching the principle of virtual work. Background technique [0002] In undergraduate courses involving mechanical mechanics at the present stage, such as theoretical mechanics, material mechanics, structural mechanics and other courses, there is still no set of concise teaching on the principle of virtual work, which is helpful for students to understand this part of the content. Students generally feel that the content of the principle of virtual work is too abstract and difficult to understand. Teachers also encounter problems such as difficulty in interpreting the content clearly. The principle of virtual work is very important in the study of mechanics, or it is called the "catalyst" of the study of mechanical problems. Using this theory can greatly simplify complex mechanical problems, and at the same time simplify calculations, and is widely used. Although the principle it...

Claims

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Application Information

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IPC IPC(8): G09B23/06
CPCG09B23/06
Inventor 沈晰强胡建卫黄金涛张敦浩李佳明周涛夏航
Owner ZHEJIANG UNIV OF TECH
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