MECHANICAL FINDER has following major functions.
- CT-based 3D Modeling
- Implant Installation
- Automatic Mesh Generation
- Inhomogeneous Material Properties
- Evaluation of Stress or Fracture
- Contact Analysis
- Friction Analysis
- Geometrical Nonlinear Analysis
- Dynamic Analysis
- High-performance Solver
CT-based 3D Modeling
|3D bone model can be constructed by extracting ROI(Region of Interest) on imported DICOM data or a series of image file(BMP, JPEG, or TIFF).||
Extracted 3D model
|Geometry (STL file format) such as an implant can be imported.
Position of an implant can be modified while displaying CT image.
*The function of geometry import is equipped only in Extended Edition.
Positioning of stem in femur
Display with CT image(left) imported(right)
Automatic Mesh Generation
|Mesh generation can be performed with only setting of mesh size with accuracy even for complicated models such as implant-installed model.|
Inhomogeneous Material Properties
|Bone has been modeled as homogeneous or 2-layered material in analysis.
MECHANICAL FINDER can build it as an inhomogeneous material reflecting CT value.
Then element on cortical bone(high density) has hard material property, on the one hand element on cancellous bone(low density) has soft one.
To convert CT value to density strictly bone density calibration phantom can be used.
Evaluation of Stress or Fracture
|Stress of strain can be evaluated by elastic analysis.
Additionally plasticity, crush and clack of element can be treated by material nonlinear analysis to evaluate fracture line and load.
Results or material properties of designated area can be extracted in numerical data. Extracted data can be output in CSV file format.
Fracture map（femural neck）
|Contact condition can be applied at the interface between two materials such as bone and implant.
Depending on analysis model, contact condition enables realistic stress distribution.
*Contact conditon can be set only in Extended Edition.
|In contact analysis friction coefficient can be set at contact suface.
*friction coefficient can be set only in Extended Edition.
Geometrical nonlinear analysis
|Adding to analysis based on infinitesimal deformation theory, geometrical nonlinear analysis na be performed.
Soft tissue capable of large deformation can be modeled as hyperelastic material.
*Geometrical nonlinear analysis is equipped only in Extended Edition.
|Shock analysis or analysis with inertial force can be performed by dynamic analysis.
*Dyanamic analysis is equipped only in Extended Edition.
|PARDISO for direct method and GPGPU for iterative method is used for matrix solver to analyze faster.
*Graphic card available for double-precision operation manufactured by NVIDIA is neccesary for GPGPU solver.