Design and development of a cost-efficient indigenous wearable chair
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Date
2025-09-19
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Publisher
UMT Lahore
Abstract
This project focuses on the Design and Development of a Cost-Efficient Indigenous Wearable Chair to reduce muscle fatigue. The need for exoskeletons arises due to an increase in muscle strain, musculoskeletal disorders (MSDs), and reduced activity, especially faced by the majority of assembly line workers, medical sector individuals, etc. These static positions can lead to muscle fatigue, lower back pain, and reduced efficiency. Existing seating solutions are costly, massive, or heavy; there is no cost-efficient exoskeleton readily available in the market. Studies have revealed benefits including improved efficiency, focus, reduced strain on muscles and joints, better posture, and enhanced comfort. The design has straightforward mechanics, with no wiring and little weight, and locks into position to rigidly support the user. It consists of a metal channel under the thigh constructed out of a square tube, which has bearings inside it connected to the mid-link to provide smooth oscillatory motion. The model was built out of stainless steel and analyzed in ANSYS 2015, which showed that the model had a total deformation of 0.101 mm and a maximum Von Mises stress of 58.015 MPa, very low within the yielding stresses of the material. The computational factor of safety was over 3.5, which indicates that the design was structurally reliable, and the protective margin was more than adequate.