Design of a Passive, Shear-Based Rotary Hydraulic Damper for Single-Axis Prosthetic Knees
With over 30 million people worldwide in need of assistive devices, there is a great need for low-cost, high performance prosthetic technologies in the developing world. A majority of the hydraulic dampers used in prosthetic knee designs are highly specialized, expensive, require regular maintenance...
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| Format: | Article |
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American Society of Mechanical Engineers
2019
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| Online Access: | http://hdl.handle.net/1721.1/120009 https://orcid.org/0000-0002-8358-7366 https://orcid.org/0000-0002-4151-0889 |
| _version_ | 1826197615757230080 |
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| author | Major, Matthew J. Arelekatti, Murthy Petelina, Nina T. Johnson, William Brett Winter, Amos G. |
| author2 | Massachusetts Institute of Technology. Department of Mechanical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Mechanical Engineering Major, Matthew J. Arelekatti, Murthy Petelina, Nina T. Johnson, William Brett Winter, Amos G. |
| author_sort | Major, Matthew J. |
| collection | MIT |
| description | With over 30 million people worldwide in need of assistive devices, there is a great need for low-cost, high performance prosthetic technologies in the developing world. A majority of the hydraulic dampers used in prosthetic knee designs are highly specialized, expensive, require regular maintenance, and are incompatible for use with low-cost, single-axis prosthetic knees popular in developing countries. In this study, optimal damping coefficients were computed based on a theoretical analysis of gait, specifically during the transition from the stance to swing phase of human walking when a large damping torque is needed at the knee. A novel rotary hydraulic damper prototype was designed using high-viscosity silicone oil and a concentric meshing of fins for shearing the oil. The prototype was validated experimentally to provide the desired damping torque profile. For preliminary, user-centric validation of the prototype, a gait study on one above-knee amputee in India was conducted with four different damping magnitudes. Feedback from the subject validated the optimal damping torque magnitude predicted for minimizing gait deviations and for enabling able-bodied knee kinematics. The new rotary hydraulic damper design is novel, passive, and compatible with low-cost, single-axis knee prostheses. Topics: Shear (Mechanics) , Dampers , Design , Artificial limbs , Knee |
| first_indexed | 2024-09-23T10:50:22Z |
| format | Article |
| id | mit-1721.1/120009 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T10:50:22Z |
| publishDate | 2019 |
| publisher | American Society of Mechanical Engineers |
| record_format | dspace |
| spelling | mit-1721.1/1200092022-09-30T23:24:43Z Design of a Passive, Shear-Based Rotary Hydraulic Damper for Single-Axis Prosthetic Knees Major, Matthew J. Arelekatti, Murthy Petelina, Nina T. Johnson, William Brett Winter, Amos G. Massachusetts Institute of Technology. Department of Mechanical Engineering Arelekatti, Murthy Petelina, Nina T. Johnson, William Brett Winter, Amos G. With over 30 million people worldwide in need of assistive devices, there is a great need for low-cost, high performance prosthetic technologies in the developing world. A majority of the hydraulic dampers used in prosthetic knee designs are highly specialized, expensive, require regular maintenance, and are incompatible for use with low-cost, single-axis prosthetic knees popular in developing countries. In this study, optimal damping coefficients were computed based on a theoretical analysis of gait, specifically during the transition from the stance to swing phase of human walking when a large damping torque is needed at the knee. A novel rotary hydraulic damper prototype was designed using high-viscosity silicone oil and a concentric meshing of fins for shearing the oil. The prototype was validated experimentally to provide the desired damping torque profile. For preliminary, user-centric validation of the prototype, a gait study on one above-knee amputee in India was conducted with four different damping magnitudes. Feedback from the subject validated the optimal damping torque magnitude predicted for minimizing gait deviations and for enabling able-bodied knee kinematics. The new rotary hydraulic damper design is novel, passive, and compatible with low-cost, single-axis knee prostheses. Topics: Shear (Mechanics) , Dampers , Design , Artificial limbs , Knee 2019-01-11T20:09:32Z 2019-01-11T20:09:32Z 2018-08 2019-01-11T16:23:11Z Article http://purl.org/eprint/type/ConferencePaper 978-0-7918-5180-7 http://hdl.handle.net/1721.1/120009 Arelekatti, V. N. Murthy, Nina T. Petelina, W. Brett Johnson, Amos G. Winter, and Matthew J. Major. “Design of a Passive, Shear-Based Rotary Hydraulic Damper for Single-Axis Prosthetic Knees.” Proceedings of the ASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, 26-29 August, 2018, Quebec City, Quebec, Canada, ASME, 2018. © 2018 by ASME https://orcid.org/0000-0002-8358-7366 https://orcid.org/0000-0002-4151-0889 http://dx.doi.org/10.1115/DETC2018-85962 Proceedings of the ASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Society of Mechanical Engineers ASME |
| spellingShingle | Major, Matthew J. Arelekatti, Murthy Petelina, Nina T. Johnson, William Brett Winter, Amos G. Design of a Passive, Shear-Based Rotary Hydraulic Damper for Single-Axis Prosthetic Knees |
| title | Design of a Passive, Shear-Based Rotary Hydraulic Damper for Single-Axis Prosthetic Knees |
| title_full | Design of a Passive, Shear-Based Rotary Hydraulic Damper for Single-Axis Prosthetic Knees |
| title_fullStr | Design of a Passive, Shear-Based Rotary Hydraulic Damper for Single-Axis Prosthetic Knees |
| title_full_unstemmed | Design of a Passive, Shear-Based Rotary Hydraulic Damper for Single-Axis Prosthetic Knees |
| title_short | Design of a Passive, Shear-Based Rotary Hydraulic Damper for Single-Axis Prosthetic Knees |
| title_sort | design of a passive shear based rotary hydraulic damper for single axis prosthetic knees |
| url | http://hdl.handle.net/1721.1/120009 https://orcid.org/0000-0002-8358-7366 https://orcid.org/0000-0002-4151-0889 |
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