In the human knee joint, a degenerative wear of the joint can be formed, the common treatment of this disease is the total knee prosthesis geometry replacement and prosthesis implanting, the aim of our research is the study of the human knee joint with applications in prosthesis, we will develop a method by creating a virtual knee prosthesis geometries, we will generate the geometries using the ADAMS program and examined on a special knee prosthesis qualification equipment.
The human knee joint usually suffers progressive deterioration with time. The conventional cure of this issue is to replace it with an alternate knee by applying the prosthesis implant. The reason is that the process causes the abrasion of the different materials rather than just sliding or rolling. This study aims to develop the numerical measurement of the knee prosthesis’s geometry, which fulfils the mechanical requirements of the human knee. The MSC.ADAMS programme was applied to demonstrate the movement of the human knee joint in terms of rotation and flexion. The changes between the condyles of the developed multibody of the prosthesis related to the flexion angle ranging from 20–120° were investigated and presented. The boundary conditions were determined, and simulations performed using the ADAM’s programme. An average value of 0.7 was reached for the slip ration, with the maximum getting up to 0.79. An angle between 110–120° for the flexion angle was obtained. It can be said that the application of the multibody model saves time as there is no involvement of the tibia and the femur as required for the knee prosthesis. More importantly, as the application of the test machine is omitted in our process, our model’s approximations to a human knee are carried out directly. Without cost, several measurements for the knee prosthesis could be made and repaired. The study results provide the necessary insight for future tests regarding the movement of the knee joint.
CONTENTS NOMENCLATURE AND ABBREVIATIONS……………………………….…………... 3.10. Block diagram showing the applied steps of the multibody virtual model created in the ADAMS software………………………..………………………… 4. RESULTS AND DISCUSSION………………………………………………...... 4.1. The virtual multibody model M1………………………………………………… 4.1.1. Simulation of the multibody model M1 in different range of rotation………………………………………………………………………………. 4.1.1.1 Simulation of the multibody model M1 at the position of 25°…………………………………………………………………………………… 4.1.1.2 Simulation of the multibody model M1 at the position of 50°………………….. 4.1.1.3 Simulation of the multibody model M1 at the position of 100°……………….. 4.1.2. Experimental measurement result for test machine of the hungarian university of agriculture engineering and Life Science…………………………. 4.1.3. Comparing the results of the current study of the numerical measurement method and the experimental measurement result for the Hungarian University of Agriculture Engineering and Life Science test machine………….. 4.2. The virtual multibody model M2…………………………………………………... 4.3. Developing the kinematic motion of multibody model for the knee prosthesis geometry…………………………………………………………………………… 4.4. Developing the new prosthesis geometry………………………………………...... 4.4.1. Boundary conditions for the simulation ……………..…………………………. 4.4.2. Simulation of the multibody model in different positions……………………. 4.4.2.1 Simulation of the multibody model at the position of 25°……………………… 4.4.2.2 Simulation of the multibody model at the position of 50°………………………. 4.4.2.3 Simulation of the multibody model at the position of 100°…………………….. 4.4.3. Comparing the current study results of the new multibody numerical measurement with a previous results from my previous multibody model……...
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