Dislocation motion demonstration teaching aid
A teaching aid and motion technology, which is applied in the field of demonstration teaching aids to achieve the effects of exquisite structure, more specific effects, and easy dislocation movement and plastic deformation.
Pending Publication Date: 2020-12-29
HUAIAN COLLEGE OF INFORMATION TECH
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Problems solved by technology
[0004] 2. The nature of plastic deformation
[0008] 3. Mobility of dislocations
[0022] 7. Insufficiency of existing teaching methods
[0027] At present, as far as teaching aids for elastic deformation and plastic deformation of metal materials are concerned, it is a technical blank and a blank in the market.
Method used
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[0059] combine Figure 1~Figure 8 It can be seen that a dislocation movement demonstration teaching aid of the present invention includes a base plate 1, the two opposite end faces of the base plate 1 are a demonstration surface and an operation surface, and two groups of demonstration model balls are arranged on the demonstration surface. 2. Each group of demonstration model balls 2 is distributed in multiple columns and rows, each column of demonstration model balls 2 is parallel, and each row of demonstration model balls 2 is also respectively parallel, and the number of columns of the two groups of demonstration model balls 2 is equal; the lower group The demonstration model ball 2 is fixed to the substrate 1 through the connection through hole 9 provided on the substrate 1 through the fixed rod 10 provided on the operation surface; The set fixing screw 10 passes through the connection through hole 9 set on the base plate 1 and is correspondingly fixed directly above the d...
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The invention discloses a dislocation motion demonstration teaching aid, which is characterized in that a demonstration surface is provided with an upper group of demonstration model balls and a lowergroup of demonstration model balls, each group of demonstration model balls is provided with multiple columns and multiple rows, each column of demonstration model balls are respectively parallel, and each row of demonstration model balls are also respectively parallel; the lower group of demonstration model balls pass through connecting through holes formed in the base plate through fixing screws arranged on the operation surface and are fixed with the base plate; the demonstration model balls in the column where one end of the upper group of demonstration model balls is located are correspondingly fixed in the mode that a fixing screw rod arranged on the operation face penetrates through a connecting through hole formed in the base plate, the other multiple columns of demonstration model balls in the upper group reciprocate in the transverse direction, and the demonstration model balls in the same column are fixedly connected with one another. On the basis of the structure, the teaching aid for demonstrating the dislocation motion achieves the specific demonstration of the principles of the dislocation motion and plastic deformation of metal from the microscopic perspective of crystal lattices under the action of the teaching aid.
Description
technical field [0001] The invention relates to the technical field of demonstration teaching aids, in particular to a demonstration teaching aid for dislocation movement. Background technique [0002] 1. The concept of edge dislocation [0003] A crystal is a substance composed of constituent atoms that are arranged repeatedly in a regular period. If all the atoms in the crystal are arranged regularly, this kind of crystal is called ideal crystal, such as Figure 9 As shown (for the convenience of subsequent explanations, the row and column numbers are indicated), ideal crystals do not exist. There are more or less lattice defects in the actual crystal. According to the size of the three-dimensional direction, the lattice defects can be divided into three categories, namely point defects, line defects and surface defects. There are two types of line defects: edge dislocations and screw dislocations. The so-called edge dislocation refers to the dislocation of the semi-ato...
Claims
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IPC IPC(8): G09B23/26
CPCG09B23/26
Inventor 张楼英孙少东孙迎远舒希勇
Owner HUAIAN COLLEGE OF INFORMATION TECH