In orthopedic surgery, bone cutting is an indispensable procedure followed by the surgeons to treat the fractured and fragmented bones. Because of the unsuitable parameter values used in the cutting processes, micro crack, fragmentation, and thermal osteonecrosis of bone are observed. Therefore prediction of suitable cutting force is essential to subtract the bone without any adverse effect. In this study, the Cowper-Symonds model for bovine bone was developed for the first time. Then the developed model was coupled with the finite element analysis to predict the cutting force. To determine the model constants, tensile tests with different strain rates (10-5/s, 10-4/s, 10-3/s, and 1/s) were conducted on the cortical bone specimens. The developed C-S model reasonably predicted the bone behavior. Then the model was implemented in the orthogonal cutting finite element simulation, and the cutting force was predicted for different depth of cuts (0.1, 0.2 and 0.3 mm). The simulated cutting force was in agreement with the experimental force value. For the analysis, the isotropic assumption was considered and only a 2D simulation was performed. In future, more realistic three-dimensional bone machining processes need to be performed to identify the appropriate parameters suited for the surgical procedures.

Prediction of Cutting Force in Bone Cutting Using Finite Element Analysis

Paper Proceedings: https://asmedigitalcollection.asme.org/MSEC/MSEC2021/volume/85062

2021 International Manufacturing Science and Engineering Conference (MSEC2021)

Supporting the need among researchers worldwide for additional online and multimedia content, ASME now offers the ASME Conference Video Collection. This platform will collect and provide long-term access to conference presentation videos, encompassing all technology areas within ASME's technical conference and events program. About 30,000-40,000 engineers across all mechanical engineering and related disciplines participate in ASME conferences each year. This includes authors of approximately 6,000 to 8,000 technical papers published by ASME, the majority of whom also submit video presentations for our virtual conferences. The video collection will be available as an add-on to existing product packages or as a separate subscription.