Numerical investigation on different penetration angle in bone drilling

Ab Razak, Nur Hasinah (2016) Numerical investigation on different penetration angle in bone drilling. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Bone drilling is a common operation to fix the fracture of human bone. However, the concern comes from a problem arise when performing the drilling which is bone necrosis. Bone necrosis is the irreversible death of bone cells in the drilled hole due to a temperature raised above its critical value of 50 °C. Former research that had been conducted emphasize on bone drilling parameters such as drill design, drilling speed, feed rate, cooling system, and depth. This study is conducted to continue in finding the best condition for bone drilling. In this study, a bone drilling process is modeled to simulate the effect of different angle of penetration towards hole performances by means of temperature generation and force distribution. Speed and feed rate will remain constant for the whole model. The model is created using DEFORM-3D Software. Finite element method is applied to calculate the temperature and force. Validation with the experimental result is done by comparing the hole accuracy. Smaller angle is more desirable compared to reduce heat generation.

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