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Product Overview:
This tutorial explores the simulation of the bone drilling process using the explicit method in Abaqus. Bone drilling is a common procedure across various surgical fields, including orthopedics, neurosurgery, plastic and reconstructive surgery, as well as craniomaxillofacial and ENT surgeries. A cylindrical tunnel is typically created in the bone using a surgical drill bit, which is essential for accommodating screws or other threaded devices meant for rigid fixation. This fixation is achieved through the integration of bone (both cancellous and cortical) with the screw threads. In this context, bone screws effectively resist axial and shear forces, as well as bending moments, making them suitable for load-bearing roles in the skeleton during locomotion. Additionally, drill bits are utilized in preparing bony tunnels, such as those required in anterior cruciate ligament reconstruction.
For this analysis, the dynamic explicit procedure is ideal. The contact settings are defined with consideration for internal damage and erosion, and these parameters are incorporated into the input file. The simulation applies rotational velocity along with axial displacement to the drill, enabling the drill to penetrate the bone and create a hole.
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