Скачать или смотреть 3d CD design and simulation of Natural Knee (femur tibia cartilages meniscui)

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This video presents a comprehensive 3D CAD design and simulation of the natural human knee joint, including anatomically accurate models of the *femur**, **tibia**, **articular cartilages**, and **menisci**, developed for biomedical engineering, biomechanics research, and orthopedic education. Using advanced CAD platforms such as **SolidWorks**, **Fusion 360**, and **Creo**, we reconstruct the knee’s geometry based on anatomical references and medical imaging data, ensuring realistic curvatures, condylar shapes, intercondylar notch, tibial plateau, and soft tissue interfaces. The femoral and tibial bones are modeled to reflect cortical and cancellous bone regions, while the medial and lateral menisci are created with their characteristic wedge-shaped geometry that aids in load distribution and knee stability. Articular cartilage layers are modeled as thin, nearly incompressible regions covering the contacting surfaces of femur and tibia, capturing their role in reducing friction and shock absorption during joint movement. Once the 3D geometry is complete, we export the assembly into simulation environments like **ANSYS* and **Abaqus**, where we apply physiologically relevant loading and boundary conditions such as body weight during gait, flexion-extension cycles, and rotational forces. The video showcases contact analysis between cartilage and meniscus, stress distribution through femoral and tibial bones, and deformation patterns in the menisci under different loading scenarios. We assign accurate **material properties**: cortical bone (Young’s modulus \~17,000 MPa, Poisson’s ratio \~0.30), trabecular bone (\~500 MPa, 0.25), articular cartilage (\~0.5 MPa, 0.48), and menisci (\~150 MPa, 0.35), allowing for a realistic finite element simulation of joint mechanics. Through high-quality mesh generation and non-linear contact modeling, the simulation provides insights into joint congruency, contact pressure zones, and the mechanical function of soft tissues in stabilizing and supporting the joint. This video is an excellent resource for students, researchers, and professionals in orthopedic biomechanics, rehabilitation engineering, or prosthetic design, providing a clear understanding of how anatomical structures interact under dynamic conditions. It can also aid in designing implants, injury prediction models, or validating computational knee joint models. Whether you're designing a biomimetic knee replacement, studying meniscus tear mechanics, or learning joint biomechanics, this detailed 3D modeling and simulation video offers a foundation for advanced study and innovation in musculoskeletal engineering.