CHARACTERIZATION OF MECHANICAL PROPERTIES OF AN INHOMOGENEOUS SOFT TISSUE USING HYPER-VISCOELASTIC MODELING AND INVERSE FINITE ELEMENT METHOD

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HESAMI MILAD; HAGHIGHI YAZDI MOJTABA; NAJAFI FARSHID

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Journal: Modares Mechanical Engineering Year:2017 | Volume:16 | Issue:10 Page(s): 1-8

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Title

CHARACTERIZATION OF MECHANICAL PROPERTIES OF AN INHOMOGENEOUS SOFT TISSUE USING HYPER-VISCOELASTIC MODELING AND INVERSE FINITE ELEMENT METHOD

Author(s)

HESAMI MILAD | HAGHIGHI YAZDI MOJTABA | NAJAFI FARSHID | Issue Writer Certificate

Keywords

HYPER-VISCOELASTICQ1

CHARACTERIZATIONQ1

INDENTATION TESTQ1

INVERSE FINITE ELEMENTQ1

LEVENBERG ALGORITHMQ2

Abstract

Characterization of mechanical properties of soft tissues using HYPER-VISCOELASTIC models has been of special attention in medical fields such as medical diagnosis. In most of these studies, only one single tissue has been analyzed and therefore, in cases that the lower tissue does not function well, generalization of obtained results for a tissue will not be suitable for other tissues. In the current study, mechanical properties of chicken chest and sheep liver, two different study cases, have been determined simultaneously using an INDENTATION TEST. To determine the properties of the obtained model, INVERSE FINITE ELEMENT method (IFEM) has been employed. Moreover, an optimization algorithm has been used for minimizing the differences of force-time curves that are obtained from INDENTATION TEST and finite element analysis. By separating the force-time curve to two hyperelastic and viscoelastic parts, the parameters of each part have been determined individually using a separate INVERSE FINITE ELEMENT method. This procedure results in reducing the computation time. Finally, the parameters of viscoelastic and hyperelastic models are determined by nonlinear root mean square error of 0.0695 and 0.0315, respectively. Comparison of the curves obtained from finite element analyses and those obtained from experiments shows the validity and capability of the employed method.

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APA: Copy

HESAMI, MILAD, HAGHIGHI YAZDI, MOJTABA, & NAJAFI, FARSHID. (2017). CHARACTERIZATION OF MECHANICAL PROPERTIES OF AN INHOMOGENEOUS SOFT TISSUE USING HYPER-VISCOELASTIC MODELING AND INVERSE FINITE ELEMENT METHOD. MODARES MECHANICAL ENGINEERING, 16(10 ), 1-8. SID. https://sid.ir/paper/178241/en

Vancouver: Copy

HESAMI MILAD, HAGHIGHI YAZDI MOJTABA, NAJAFI FARSHID. CHARACTERIZATION OF MECHANICAL PROPERTIES OF AN INHOMOGENEOUS SOFT TISSUE USING HYPER-VISCOELASTIC MODELING AND INVERSE FINITE ELEMENT METHOD. MODARES MECHANICAL ENGINEERING[Internet]. 2017;16(10 ):1-8. Available from: https://sid.ir/paper/178241/en

IEEE: Copy

MILAD HESAMI, MOJTABA HAGHIGHI YAZDI, and FARSHID NAJAFI, “CHARACTERIZATION OF MECHANICAL PROPERTIES OF AN INHOMOGENEOUS SOFT TISSUE USING HYPER-VISCOELASTIC MODELING AND INVERSE FINITE ELEMENT METHOD,” MODARES MECHANICAL ENGINEERING, vol. 16, no. 10 , pp. 1–8, 2017, [Online]. Available: https://sid.ir/paper/178241/en

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