Soft material deformation characterization method based on equivalent thickness bulk modulus and application thereof

A bulk modulus, soft material technology, applied in the application of stable tension/pressure to test the strength of materials, analyzing materials, computer materials science, etc., can solve problems such as three-dimensional deformation

Active Publication Date: 2021-07-06
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The object of the present invention is to provide a soft material deformation characterizatio...

Method used

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  • Soft material deformation characterization method based on equivalent thickness bulk modulus and application thereof
  • Soft material deformation characterization method based on equivalent thickness bulk modulus and application thereof
  • Soft material deformation characterization method based on equivalent thickness bulk modulus and application thereof

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Embodiment 1

[0064] Preferred embodiment 1: Deformation characterization of PDMS soft materials using IVMET

[0065] According to this preferred embodiment, first, the bionic soft material polydimethylsiloxane (PDMS) is used as the test material, and the mass ratio of the base liquid and the curing agent is 25:1, and the same process is used to prepare four thicknesses For different soft material samples, the sample thicknesses are 5.93mm, 4.83mm, 4.16mm and 3.21mm respectively.

[0066] According to this preferred embodiment, according to the above-mentioned specific steps of the IVMET-based soft material characterization method of the present invention, first, the obtained four kinds of soft material samples are successively placed on the MFT-5000 friction and wear testing machine, using a 10N sensor and a diameter of 3.2 mm flat indenter for compression test to obtain the force-displacement value curve; secondly, the compressive stress is calculated according to the force-displacement v...

Embodiment 2

[0070] Preferred embodiment 2: Deformation characterization of SEEPS thermoplastic elastomer soft material (SEEPS-TPE) using IVMET

[0071] According to this preferred embodiment, the SEEPS-TPE soft material is prepared by molding method, and the prepared samples have seven samples whose paraffin oil addition amounts are (0, 50, 100, 150, 200, 250, 300) phr respectively, and the obtained seven The samples were successively placed on the MFT-5000 friction and wear testing machine for compression tests using a 10N sensor and a flat indenter with a diameter of 3.2mm. Since it is difficult to obtain samples with the same thickness by molding method, the characterization method based on IVMET is used to characterize SEEPS-TPE with different paraffin oil additions to analyze the influence of different paraffin additions on SEEPS-TPE, see Figure 4 shown.

[0072] Depend on Figure 4 The data shows that with the increase of paraffin oil addition, the IVMET of SEEPS-TPE decreases, t...

Embodiment 3

[0073] Preferred embodiment 3: Utilize IVMET to carry out deformation characterization to the SEEPS-TPE soft material that adds Talc

[0074] According to this preferred embodiment, first add quantitative Talc and antioxidant (1phr) to paraffin oil (140phr) and mix uniformly to form a suspension, then mix and stir the SEEPS material and suspension uniformly, and place for 8 hours. Finally, Talc-SEEPS-TPE was prepared by molding method, and the prepared samples were Talc-SEEPS-TPE with Talc addition amount of (0, 5, 10, 15, 20, 25, 30) phr. Put the obtained seven kinds of samples on the MFT-5000 friction and wear testing machine successively, and use the 10N sensor and the flat indenter with a diameter of 3.2mm to carry out the compression test. And use IVMET to characterize the Talc-SEEPS-TPE of different Talc additions, to analyze the impact of different Talc additions on SEEPS-TPE, see see Figure 5 shown.

[0075] Depend on Figure 5 It can be seen from the data that wit...

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Abstract

The invention discloses a soft material deformation characterization method based on equivalent thickness bulk modulus IVMET, and the method comprises the steps that an equivalent volume model is built according to the three-dimensional deformation of a soft material through employing an equivalent volume method, and the bulk modulus of the soft material is calculated more accurately; and furthermore, based on the calculation of the equivalent thickness bulk modulus, the influence of the material thickness on the material bulk modulus is eliminated, and the attribute of the soft material can be represented more accurately. Moreover, according to the soft material deformation characterization method based on the equivalent thickness bulk modulus (IVMET), the soft material containing complex added components can be characterized, so that the influence of various added components on the performance of the soft material is analyzed. The invention further discloses a method for carrying out deformation characterization on different areas of the human tongue based on the IVMET, deformation characterization can be carried out on the different areas of the human tongue, and a basis can be provided for the selection and characterization of oral cavity bionic soft materials.

Description

technical field [0001] The invention relates to a soft material deformation characterization method based on equivalent thickness bulk modulus and its application, and belongs to the technical field of soft material indentation experiment and soft material characterization. In particular, the present invention also relates to a method for deformation characterization of different regions of the human tongue based on equivalent thickness bulk modulus (IVMET). Background technique [0002] Elastomer soft material is a polymer material with high elasticity and low permanent deformation, which is widely used in various fields of industrial production and daily life, and also has important applications in the field of bionics. However, the following problems will arise during the application of soft materials: on the one hand, factors such as material aging have an important impact on the performance and service life of elastomeric soft materials; on the other hand, the quality o...

Claims

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Application Information

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IPC IPC(8): G01N3/08G16C60/00G06F30/20G06F119/14
CPCG01N3/08G16C60/00G06F30/20G01N2203/0019G06F2119/14
Inventor 钱善华刘智丁宗如王亮倪自丰俞经虎
Owner JIANGNAN UNIV
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