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All Journal Journal of Biomedical Science and Bioengineering
Murti Ayu Nur Safitri
Department of Mechanical Engineering, Diponegoro University Center for Biomechanics, Biomaterial, Biomechatronics, and Biosignal Processing, Diponegoro University
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering

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Design and Analysis of The Energy Storage and Return (ESAR) Foot Prosthesis Using Finite Element Method Alfiana Fitri Istiqomah; Rifky Ismail; Deni Fajar Fitriyana; Sulistyo Sulistyo; Akmal Putra Fardinansyah; Murti Ayu Nur Safitri; Januar Parlaungan Siregar
Journal of Biomedical Science and Bioengineering Vol 1, No 2 (2021)
Publisher : Center for Biomechanics, Biomaterials, Biomechantronics and Biosignal Processing (CBOIM3S)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (428.87 KB) | DOI: 10.14710/jbiomes.2021.v1i2.59-64

Abstract

ABSTRACT. Disability issue has increased in recent years due to the high number of accidents and vascular disease. Loss of limb function for people with amputations often results in an abnormal gait. Energy Storage And Return (ESAR) foot prostheses provide an alternative to help improve gait and minimize metabolic energy expenditure during the walking phase of amputees. This study used 3 designs with models from the Catia V5 Software. The finite element method analysis used Ansys Workbench 18.1 software to evaluate the three designs with a loading of 1.2 times the user's body weight with a maximum weight of 70 kg in normal walking activities. The simulated material is carbon fiber prepreg which has tensile strength, Young's modulus, Poisson ratio, and density of 513.72 MPa, 77.71 GPa, 0.14, and 1.37 g/cm3. The decision-making matrix method is used to determine the best foot prosthesis design according to predetermined criteria. The highest value in the decision-making matrix is 76 in Design 3. The chosen design (Design 3) after gait cycle analysis has a maximum von Mises stress value of 76.956 MPa and the safety factor value for each gait cycle heel strike loading model is 1.0762; foot flat 3.2509; toe-off 6.6263.
Co-Authors Akmal Putra Fardinansyah Alfiana Fitri Istiqomah Fitriyana, Deni Fajar Januar Parlaungan Siregar Rifky Ismail Sulistyo Sulistyo