Strength of materials deformation strain demonstration teaching tool

A technology of deformation stress and material mechanics, applied in the field of teaching aids, can solve problems such as no search, and achieve the effects of simple demonstration, reduced manufacturing cost, and simple structure

Active Publication Date: 2017-07-04
QUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In response to the problems encountered by students in the process of learning the four major deformation stresses, and through the investigation of the physical market and online

Method used

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  • Strength of materials deformation strain demonstration teaching tool
  • Strength of materials deformation strain demonstration teaching tool
  • Strength of materials deformation strain demonstration teaching tool

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Embodiment Construction

[0028] The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0029] Such as figure 1 and image 3 As shown, a material mechanics deformation stress demonstration teaching aid, including the teaching aid bar, the teaching aid bar is made of PVC material commonly used in the market, that is, polyvinyl chloride, and has good mechanical properties. The tensile strength is 55-65MPa, and the impact strength is 5-10kJ / m 2 , in the actual application process, the mechanical properties of the teaching aid rods are tensile strength 65MPa, impact strength 8kJ / m 2 . The teaching aid bars include bar one 1, bar two 2 and bar three 3. Rod 1 is provided with circular through hole 1 along the length direction, rod 2 2 is provided with circular through hole 2 along the length direction, rod 3 3...

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Abstract

The invention provides a strength of materials deformation strain demonstration teaching tool and belongs to the field of teaching tools. The teaching tool herein includes teaching tool pole pieces which refer to a pole piece 1, a pole piece 2, and a pole piece 3. The pole piece 3 is fixedly provided with a covering tray. The pole piece 2 is fixedly provided with a spring fixing piece 1 which is provided with a circle groove thereon. The circle groove is fixedly provided therein with a bearing which is fixedly provided with a shaft 1. The pole piece 3 is fixedly provided with a spring fixing piece 2 which is provided with a penetration hole thereon. The pole piece 1 is provided with a shaft 2. The shaft 1 and the shaft 2 are sleeved with adjusting springs. The shaft 2 has one end which protrudes from the spring fixing piece 2 is fixedly provided with a torsion dial. The pole piece 1 and the pole piece 2 are provided therebetween with a bending stress demonstration assembly which can demonstrate bending stress. The other end of the pole piece 2 is provided with a shearing stress demonstration assembly which can demonstrate shearing stress. According to the invention, the teaching tool can demonstrate stretching, or compression, shearing, torsion and bending.

Description

technical field [0001] The invention belongs to the field of teaching aids, and relates to a teaching aid for demonstration, in particular to a teaching aid for demonstration of deformation stress of material mechanics. Background technique [0002] Mechanics of materials is an important basic course for mechanical and civil engineering majors, and it is also a relatively abstract course, especially the content of the four basic deformation stresses of tension or compression, shearing, torsion and bending. It is difficult to truly understand with more vivid description and explanation methods. For example, for a simple bar shear deformation, students may understand the deformation characteristics of the shear deformation relatively easily, but they will feel a little powerless to let them really understand the shear stress distribution of the bar section. Therefore, in the teaching process of material mechanics, it is undoubtedly a good teaching method to use simple and viv...

Claims

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Application Information

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IPC IPC(8): G09B23/10
CPCG09B23/10
Inventor 吴明明江海兵陈露
Owner QUZHOU UNIV
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