Why to use finite element instead of experimental test in biomechanics?
Best insight from top research papers
Finite element method (FEM) is used in biomechanics to solve real-life problems that cannot be solved with analytical methods. The complexity of biological systems, such as geometry, material properties, and functioning, makes analytical methods limited in this area . FEM allows for the design of customized medical devices, such as orthopaedic and dental implants, based on clinical conditions . Numerical approximation using finite element analysis has proven to be beneficial in musculoskeletal biomechanics as it allows for the evaluation of the dynamic, three-dimensional kinematics of joints and the determination of forces acting locally on each joint . FEM is the preferred method for stress and strain analysis of bone, joints, and load-bearing implants in orthopaedic biomechanics . Meshless methods, such as the natural element method, have also emerged as an attractive choice in biomechanics due to their ability to handle complex geometry and large displacements .
Answers from top 4 papers
More filters
| Papers (4) | Insight |
|---|---|
69 Citations | Finite element methods are commonly used in biomechanics simulations due to their ability to handle complex geometries and large displacements, as well as their relatively less sensitivity to point distributions. |
23 Citations | Finite element modeling in biomechanics allows for cost-effective and efficient analysis, providing valuable insights and reducing the need for extensive experimental testing. |
| Finite element analysis allows for the prediction of stress and strain states in bone and implants, as well as the evaluation of micromotion, which may not be feasible through experimental tests. | |
| Finite element method is used in biomechanics because it can solve complex problems that cannot be solved analytically and allows for customized design based on clinical conditions. |
Related Questions
What is finite element in mechnical engineering?4 answersThe finite element method (FEM) is a numerical technique extensively utilized in mechanical engineering for analyzing structures, continua, and various physical phenomena. FEM involves dividing complex problems into smaller, more manageable elements to create simultaneous algebraic equations that are solved using digital computers. This method is crucial for stress analysis, heat conduction, fluid flow, and other engineering applications, providing accurate results at reasonable costs. FEM plays a vital role in disciplines like civil engineering, structural engineering, and biomechanics, enabling engineers to simulate real-world environments and optimize designs without the need for numerous physical prototypes. The method is supported by various software packages like Ansys, COMSOL, and MATLAB, offering a close estimation of simulation models for practical engineering applications.
What are the benefits of biomechanics?5 answersBiomechanics offers several benefits in the field of sports and physical education. It helps in refining sports activities and promoting scientific training for athletes, leading to a competitive edge. Coaches who understand biomechanics can effectively teach correct mechanical techniques to athletes, enhancing their performance. Physical educators can use biomechanics to evaluate technique and prescribe interventions for young people to improve their physical development. Biomechanics also plays a crucial role in understanding the form, function, and motion of the human body, which is essential for studying disease etiology, making treatment decisions, and evaluating treatment effects. Additionally, biomechanics provides a rationale for teaching key points and diagnosing technique in motor skills, benefiting fitness instructors, physical educators, and coaches. Overall, biomechanics contributes to enhancing athletic performance, improving physical development, preventing injuries, and aiding in the diagnosis and treatment of movement-related issues.
How can finite element analysis be used to model soil behavior?5 answersFinite element analysis (FEA) can be used to model soil behavior by employing different approaches. One approach is to use deep learning (DL) models to depict the constitutive behaviors of soils, which can be trained with stress-strain data and integrated into the FEA solver for analyzing various geotechnical engineering problems. Another approach involves choosing a suitable soil model within the FEA framework, such as the Mohr-Coulomb model or the Hardening Soil model, to describe the behavior of the simulated soil massif. FEA can also be used to investigate the behavior of soil around pile groups, where the mechanism of subgrade reaction can be analyzed based on dynamic effective stress analyses. Additionally, FEA can be applied to analyze the behavior of soil nail walls in different freezing and thawing conditions, providing valuable insight into their performance in cold regions.
What is the purpose of biomechanical modelling?5 answersBiomechanical modelling is used for various purposes. It can be used to predict the behavior of structures, providing a physics-based extrapolation, not just geometric, in areas where there is limited or no intraoperative data available. Biomechanical models can also be used to assist in the development of methods, algorithms, and systems in biosignal processing. In the context of foot ulcers in persons with diabetes, a biomechanical foot model coupled with a pressure sensor can be used to estimate tissue strains and determine if they can cause ulcer formation. In the field of nanomedicine, biomechanical modelling plays a key role in enabling the translation of patient-specific treatments and effective therapies to clinical practice. Biomechanical models are also important in the improvement and understanding of submodels in the global food production system, such as food animal production.
What is the most common application of finite element analysis in knee biomechanics?5 answersFinite element analysis (FEA) is commonly used in knee biomechanics research. It has various applications in the field, including artificial knee replacement surgery guidance and recommendations. FEA can help determine the contact stress and wear of components in total knee arthroplasty (TKA), with mobile-bearing prostheses reducing contact surface stress and wear compared to fixed-bearing prostheses. Kinematic alignment in TKA can reduce stress and strain on the femoral component and polyethylene insert, leading to reduced wear and prolonged prosthesis life. In unicompartmental knee arthroplasty (UKA), mobile-bearing prostheses with better conformity can reduce component wear, while excessive overconformity of fixed-bearing prostheses should be avoided to prevent accelerated wear. FEA is also used in revision total knee arthroplasty (RTKA) to design stem implants that balance bone preservation and stress reduction. Additionally, FEA can be used to analyze knee joint mechanics and biomechanical mechanisms leading to osteoarthritis (OA).
Are there any interesting plane stress problems in biomechanics?3 answersThere are several interesting plane stress problems in biomechanics. One example is the analysis of plates under in-plane loading, such as thin plates loaded over their lateral boundary by uniform tractions across the thickness of the plate. Another example is the analysis of thick pipes under internal pressure, where the plane stress assumption can be applied. Additionally, the study of the stress distribution in deforming zones of rigid/plastic bodies can be relevant in biomechanics, particularly in cases where the body is loaded beyond the range of contained plastic deformation. These problems involve the distribution of stress in the deforming zone of the assumed rigid/plastic body, which approximates the stress distribution in an elastic/plastic body. Therefore, the plane stress assumption can be useful in analyzing various biomechanical scenarios.