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Elastoplastic equivalent material and preparation method thereof

A similar material, elastoplastic technology, applied in the field of similar materials and their preparation, can solve problems such as difficult to realize, and achieve the effects of easy processing, stable mechanical properties, and wide sources

Inactive Publication Date: 2011-01-12
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And according to the needs, by fixing some parameters and changing other parameters to study the law of stress changing with time in actual engineering, these are difficult to achieve under field conditions
However, there has been no report on the development of similar test materials with ideal elastoplastic stress-strain curves.

Method used

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  • Elastoplastic equivalent material and preparation method thereof
  • Elastoplastic equivalent material and preparation method thereof
  • Elastoplastic equivalent material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment one, weigh by mass proportioning:

[0021] 100 parts of paraffin;

[0022] Vaseline 80 parts;

[0023] 60 parts of powdered rubber.

[0024] First put 100 parts of paraffin wax and 80 parts of Vaseline weighed according to the mass ratio into a stainless steel cup, then put the stainless steel cup into an oven to heat, adjust the temperature of the oven to 80 degrees Celsius, and after heating for about 8 hours, vaseline and The paraffin is completely melted into a mixed liquid. At this time, take out the stainless steel cup and stir it with a mixer. Stir the mixture of paraffin wax and Vaseline for 1 to 2 minutes, then slowly add 60 parts of powdered rubber while stirring, and continue stirring after adding the powdered rubber. After about 5 minutes until uniform, stop stirring, pour the mixture in the stainless steel cup into the mold, cool at room temperature for about 24 hours, and remove the mold.

[0025] For the convenience of the test, the mold use...

Embodiment 2

[0026] Embodiment two, weigh by mass proportioning:

[0027] 100 parts of paraffin;

[0028] Vaseline 50 parts;

[0029] Powder rubber 100 parts.

[0030] First put 100 parts of paraffin and 50 parts of Vaseline weighed according to the mass ratio into a stainless steel cup, then put the stainless steel cup into an oven to heat, adjust the temperature of the oven to 120 degrees Celsius, and after heating for about 5 hours, Vaseline and The paraffin is completely melted into a mixed liquid. At this time, take out the stainless steel cup and stir it with a mixer. Stir the mixture of paraffin wax and Vaseline for 1 to 2 minutes, then slowly add 100 parts of powdered rubber while stirring, and continue stirring after adding the powdered rubber. About 10 minutes until uniform, stop stirring, pour the mixture in the stainless steel cup into the mold, cool at room temperature for about 24 hours, and remove the mold.

[0031] In this embodiment, a cylindrical mold is also used, and...

Embodiment 3

[0032] Embodiment three, weigh by mass proportioning:

[0033] 100 parts of paraffin;

[0034] Vaseline 110 parts;

[0035] 50 parts of powdered rubber.

[0036] First put 100 parts of paraffin and 110 parts of Vaseline weighed according to the mass ratio into a stainless steel cup, then put the stainless steel cup into an oven to heat, adjust the temperature of the oven to 140 degrees Celsius, and after heating for about 3 hours, Vaseline and The paraffin is completely melted into a mixed liquid. At this time, take out the stainless steel cup and stir it with a mixer. Stir the mixture of paraffin wax and Vaseline for 1 to 2 minutes, then slowly add 50 parts of powdered rubber while stirring, and continue stirring after adding the powdered rubber. About 10 minutes until uniform, stop stirring, pour the mixture in the stainless steel cup into the mold, cool at room temperature for about 24 hours, and remove the mold.

[0037] In this embodiment, a cylindrical mold is also us...

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Abstract

The invention relates to an elastoplastic equivalent material and a preparation method thereof. Paraffin, vaseline and powder rubber are used as raw materials and mixed in different mass proportions to obtain geotechnical equivalent material with ideal elastoplastic stress-strain characteristic and stress--intensified stress-strain characteristic. The material has low strength, is convenient to load in a model experiment, and is applicable to small-size loading equipment. The material can be recycled, has stable mechanical properties, and greatly lowers the experimental cost. The elastoplastic equivalent material has wide sources of raw materials, is easy to process, does not need curing, has stable mechanical properties at room temperature, can be used for simulating the geotechnical elastoplastic material, and is beneficial to solving the practical problems in geotechnical engineering production. The invention has the advantages of simple preparation method, low price and strong practicality.

Description

Technical field: [0001] The invention relates to a similar material and a preparation method thereof, in particular to a test material suitable for simulating elastic-plastic materials. Background technique: [0002] The similar simulation test is a test method that uses a model instead of a prototype to conduct test research according to a certain geometric and physical relationship, and uses the research results for the prototype. It is an important scientific research method. It is to make a model similar to the prototype in the laboratory according to the similarity principle, observe the internal force parameters and their distribution laws of the model with the help of test instruments, and use the results of the research on the model to infer the possibility of the prototype. The mechanical phenomena that occur and the law of rock mass pressure distribution can solve practical problems in rock mass engineering production. This research method has the advantages of in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L91/06C08L21/00G01N1/28
Inventor 周国庆廖波刘卓典赵光思陈国舟
Owner CHINA UNIV OF MINING & TECH
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