Title :
Topology Optimization of a Prosthetic Knee Joint Component
Author :
Lu, Jianan ; Chen, Yonghua
Author_Institution :
Dept. of Mech. Eng., Univ. of Hong Kong, Hong Kong, China
Abstract :
In order to simulate the damping effect of cartilage at human´s knee joint, the component of a prosthetic knee joint is topology optimized as a compliant mechanism. After optimization, the component not only has the desired damping effect, but also has a lightweight structure, which is still capable of withstanding the prescribed loads. The SIMP (Solid Isotropic Material with Penalization) interpolation scheme for topology optimization is used here with OC (Optimality Criteria) method as optimizer. The optimization is implemented by a MATLAB code. A proof test by ANSYS has shown that the optimized component with Polyethylene Terephthalate (PET) as material has a displacement about 1.65 mm within constraints of material volume and strength.
Keywords :
biomechanics; biomedical materials; bone; compliant mechanisms; damping; interpolation; lightweight structures; optimisation; polymers; prosthetics; ANSYS; MATLAB code; SIMP interpolation scheme; cartilage damping effect simulation; compliant mechanism; human knee joint; lightweight structure; optimality criteria method; polyethylene terephthalate; prosthetic knee joint component topology optimization; solid isotropic material with penalization scheme; Joints; Knee; Materials; Optimization; Prosthetics; Stress; Topology; bionic mechanism design; compliant mechanisms; optimization; prosthetic knee joint; topology;
Conference_Titel :
Manufacturing Automation (ICMA), 2010 International Conference on
Conference_Location :
Hong Kong
Print_ISBN :
978-1-4244-9018-9
Electronic_ISBN :
978-0-7695-4293-5
DOI :
10.1109/ICMA.2010.52
