Instantaneous volume modulus and its application in the human tongue using the in-situ strength measurement method

Liu, Zhi; Qian, Shanhua; Tang, Qichen; Cheng, Shuai; Yu, Jinghu

doi:10.1016/j.polymertesting.2021.107157

Cited by 1 publication

(3 citation statements)

References 33 publications

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“…Finite element results with high correlation coefficient can be obtained within 5 minutes. Similar methods have been used in previous literatures [48,63].…”

Section: Finite Element Methodsmentioning

confidence: 99%

“…The elastic modulus of the material properties was adjusted using the MATLAB and FORTRAN tool optimization algorithm. The least square method was used for the reduction of the deviations between the displacement-time curves of the finite element results and those of the experiments [48,63]. Finally, a suitable modulus was obtained, and the correlation coefficients between the displacement-time curves of the finite element results and those of the experiments were calculated.…”

Section: Finite Element Methodsmentioning

confidence: 99%

“…Besides the above test methods, finite element method and molecular dynamics simulation are also applied to characterizing the mechanical properties of soft materials. A molecular dynamics model was established to study the effect of different molecular weights on the mechanical properties of polydimethylsiloxane [48][49][50][51][52][53]. In addition, the thickness of soft materials is one of the essential factors, especially in the flexible electronics field, and it is integral to select the soft materials of appropriate thickness [39,54,55].…”

Section: Introductionmentioning

confidence: 99%

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Study on characterization methods of the deformation properties of soft material polydimethylsiloxane using the indentation test

Tang

Qian

Zhou

et al. 2022

Materialwissenschaft Werkst

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Soft materials are widely used in biomedical and flexible electronics fields, while their deformation properties are affected by many factors. It is difficult to obtain accurate characteristic parameters using common test methods. In this work, polydimethylsiloxane is used as the tested object, and the samples with different mass ratios of curing agent/base and thicknesses are prepared. The deformation properties of polydimethylsiloxane under the conditions of different loads and two indenters are investigated using the experiment and finite element analysis, and the factors affecting its deformation properties are discussed. The results demonstrate that the elastic modulus of polydimethylsiloxane is positively correlated with the content of curing agent, and the load has no significant role in its deformation properties. The correlation coefficients between the indentation tests and finite element results are in excess of 0.92. The difference between the modulus of the spherical indentation mode and the elastic modulus of the standard tensile test is lower than 3 %, while the flat‐ended indentation mode is more applicable to characterizing deformation properties of soft materials with variable thickness. These results will provide a new insight into the deformation characterization of soft materials.

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“…Finite element results with high correlation coefficient can be obtained within 5 minutes. Similar methods have been used in previous literatures [48,63].…”

Section: Finite Element Methodsmentioning

confidence: 99%

Section: Finite Element Methodsmentioning

confidence: 99%