09.2021.418.427

Stress and Strain Analysis for the Prosthetic Hand Design Actuated By Links

Author(s):

Samara Munaem Naeem*, Prof. Dr. Majid H. Faidh-Allah

Affiliation(s):

Department of Mechanical Engineering, University of Baghdad, Baghdad, Iraq.

Corresponding Author Email: samaranaeem@gmail.com

This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Prosthetic hands are compensatory devices for the hand amputees as a result of injury, various accidents or birth deformities, types of prosthetic hand vary depending on the mechanism they operate and how they perform. There are common types in use that are characterized by their complex mechanisms, which are difficult for the amputee to use or exclude use because of their high cost, therefore the aim of this research is to design an artificial hand that is suitable in terms of simplicity of use and low cost and similar to a natural hand with regard to dimensions and shape that operated in the mechanism of links. This research involves Stress and strain analysis of the prosthetic hand and its fingers that modelled from (Petg CR) material. All design and analysis are done in the program Solidwork 2018 to find the effect of different load conditions on the designed hand by adding (normal load, ball grasping, cylinder rising). The von- Mises stresses deducted for a fingertip and assembled finger as well as the assembled hand to identify the maximum stress accrues before failure in daily life functions.