Simulation and optimization of materials used for prosthetic leg for above-knee amputees using MR fluid

Shastry, Ganapati; Toby, Ashish; Kumbhar, M. B.; Salunkhe, V.G.; Jagadeesha, T.

doi:10.1016/j.matpr.2021.01.862

Cited by 10 publications

(4 citation statements)

References 22 publications

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“…Natural fiber and composite laminated materials are now becoming main-stream materials to design running blades. Shastry et al (2021) studied the dynamics of prosthetic legs. They mentioned that disabled people can easily and actively use prosthetic legs because the new designs significantly provide sufficient torque and force.…”

Section: Introductionmentioning

confidence: 99%

Static Behavior of a Prosthetic Running Blade Made from Alloys and Carbon Fiber

Siddiqui¹,

Arifudin²,

Alnaser³

et al. 2023

Journal of Disability Research

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Prosthetic running blades offer a solution for individuals with disabilities to engage in sports, benefiting them both psychologically and physiologically. Furthermore, a good prosthetic running blade in terms of performance and cost is rarely available to all disabled persons. In this study, we have examined how various materials impact the static behavior of the prosthetic running blade. A finite element numerical analysis was conducted on a prosthetic design to investigate this effect. We have used different materials for investigation such as aluminum alloy (2024 T4), stainless steel (AISI 316), carbon fiber, and titanium alloy (grade 5), under different load conditions. The load conditions have been varied mainly to three conditions, namely, rest (700 N), walking (1400 N), and running (2100 N). In our experimental design, we studied total deformation, equivalent stress, and strain energy to understand the performance based on material choice. It was noticed that the aluminum alloy (2024 T4) blade goes under much deformation when compared to titanium- and carbon fiber-made running blades. The least amount of overall deformation occurs in carbon fiber under varying load conditions. Carbon fiber appears to be the most profitable option due to its lowest cost per running blade. Titanium alloy grade 5, carbon fiber, AISI 316 stainless steel, and aluminum 2024 T4 alloy cost a total of 78.1, 48.5, 67.6, and 20.9 USD, respectively. It is evident that titanium alloy materials carry a higher price compared to alternative materials.

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Section: Introductionmentioning

confidence: 99%

Static Behavior of a Prosthetic Running Blade Made from Alloys and Carbon Fiber

Siddiqui¹,

Arifudin²,

Alnaser³

et al. 2023

Journal of Disability Research

View full text Add to dashboard Cite

show abstract

“…They were able to lighten the body's overall composition thanks to this new design. Shastry et al (2021) mentioned that because the new designs significantly provide enough torque and force, disabled people can easily and actively use prosthetic legs. According to a report, the cost of prosthetic legs is the main source of worry, but new materials should be more affordable for those with money constraints.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation on the Performance of Prosthetic Running Blades by Using Different Materials

Siddiqui

Arifudin

Alnaser

et al. 2023

Journal of Disability Research

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The amputation of a lower limb for humans is one of the most traumatic experiences, both physically and emotionally. Prosthetic running blades provide disabled persons with an opportunity to participate in sports and thus help to improve their psychological health. They also allow them to participate in activities that were previously unavailable to them due to financial constraints. In the current study, we looked at how different materials affected the functionality of prosthetic running blades. We investigated the static behavior of a prosthetic running blade using finite element modeling. Under various load circumstances, we conducted numerical simulation using a variety of materials, including titanium alloy (grade 5), carbon fiber, stainless steel (AISI 316), and aluminum alloy (2024 T4). We studied three major load conditions: rest (700 N), walking (1400 N), and running (2200 N). To understand the performance depending on the selection of materials, we evaluated total deformation, equivalent stress, and strain energy in the design of our experiment. The titanium alloy is more durable and has a higher tensile strength. The high cost of manufacture for titanium alloy, however, is a major deterrent to its use in running blades. It was noticed that the aluminum alloy (2024 T4) blade goes under much deformation as compared to titanium and carbon fiber-made running blades. Furthermore, carbon fibers offer excellent mechanical properties, which are essential for creating running blades. It has outstanding tensile properties. Additionally, the low density of carbon fiber has the added advantage of making running blades lighter.

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“…The inverse model can accurately calculate the required control current. The MRF damper is used to provide a 2-DOF ankle semi-active prosthesis, which can move freely and conveniently under the condition of appropriate price (Shastry et al, 2021). Sharma et al (2022) proposed a fuzzy logic control strategy based on MRF damper, and through the performance and robustness analysis of the developed prosthesis tested by real-time gait data, a more accurate and natural gait of the prosthesis was obtained.…”

Section: Introductionmentioning

confidence: 99%

Modeling and experimental evaluation of vibration reduction of hydraulic-driven joint with a MRF damper

Meng

Zhang

Sheng³

et al. 2022

Journal of Intelligent Material Systems and Structures

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In order to reduce the impact force of the legged hydraulic-robot when it is driving on the ground, a new method based on magnetorheological technology is proposed for damping control of hydraulic mechanical legs in this paper. Firstly, the structure of hydraulic-driven leg with magnetorheological fluid (MRF) damper is designed, and the magnetic field simulation analysis of MRF damper is carried out to verify the rationality of magnetic circuit. Then the effects of different damping ratios on the dynamic performance of valve-controlled cylinder system are analyzed by theoretical modeling. Further, the co-simulation modeling of MRF damper and valve-controlled cylinder is established based on AMESIM to analyze the vibration reduction effect under impact force. Finally, the experiments of the hydraulic system designed in this paper are carried out under step load and triangular-wave load to obtain the system output displacement and pressure under two kinds of loads. Compared with the results without MRF damper, it is found that the new method can reduce the increase of pressure impact by 82% and almost eliminate the pressure fluctuation in the high pressure chamber of hydraulic cylinder.

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Simulation and optimization of materials used for prosthetic leg for above-knee amputees using MR fluid

Cited by 10 publications

References 22 publications

Static Behavior of a Prosthetic Running Blade Made from Alloys and Carbon Fiber

Static Behavior of a Prosthetic Running Blade Made from Alloys and Carbon Fiber

Numerical Investigation on the Performance of Prosthetic Running Blades by Using Different Materials

Modeling and experimental evaluation of vibration reduction of hydraulic-driven joint with a MRF damper

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