Effect of Crack Angle on Stress Shielding in Bone and Orthopedic Fixing Plate Implant: Design and Simulation

In the present study, laminated composites of polymethyl methacrylate AQ1 1
2 (PMMA)—titanium (Ti) with different ply orientation are designed and three dif�3 ferent crack angles (20°, 40° and 50°) were considered in femur bone to investigate
the effect of crack angle on the stress distribution in the bone. PMMA was selected AQ2 4
5 as matrix and titanium was selected as fiber from 0.2 to 0.5 volume fraction (Vf).
6 3D model of bone implant assembly was designed by using computer-aided drafting
(CAD) and simulation was carried out with the help of ANSYS Workbench® 7 soft�8 ware. Laminated composites with different ply orientations with different volume
fractions of fiber were analyzed, and optimum combination was abstracted with an AQ3 9
10 objective to attain higher and uniform stress distribution throughout the bone. From
11 the results, it is observed that the crack angle effects the stress distribution in the
12 bone even though the same laminated composite is used as implant.
13 Keywords Stress shielding · Titanium · Laminated composite · PMMA