Development of Knowledge-Based Engineering System for Structural Size Optimization of External Fixation Device

The development process of the knowledge-based engineering (KBE) system for structural size optimization external fixation device is presented in this paper. based on algorithms generative modeling, finite element model (FEM) analysis, and optimization. All these are integrated into CAD/CAM/CAE CATIA. initial CAD/FEM verified using experimental verification real design. Experimental testing done axial pressure. Axial stress displacements measured tensometric analysis equipment. proximal bone segment were monitored by a displacement transducer, while loading was controlled force transducer. Iterative hybrid algorithm developed integration global algorithm, simulated annealing (SA) method local conjugate gradient (CG) method. cost function minimization design volume. Constrains given form clinical interfragmentary constrains, at point fracture maximum allowed stresses material device. Optimization variables chosen as parameters optimized has smaller mass, better distribution, displacement, correlation with model.