Finite Element Analysis Of Flat Top Nabla™ Handle
— Wang Chen PhD
Model Info
- Nonlinear static analysis
- Half of geometry – symm at xz plane
- Distance between pivot and loading tip is about 110 mm
- Distance between fixed end and pivot is about 440 mm
- The same Orthotropic material properties of carbon-fiber composites applied to both shapes
- New design: thickness x* mm
- Old design (circular): thickness y* mm for bottom part and x* mm for the rest
* Confidential (Withheld)
Results
- Results indicate performance under given load case with given material properties.
| New design (irregular) | Old design (circular) |
|
|---|---|---|
| Mass | x* g | y* g |
| Stiffness index | 498.4 | 217.3 |
| Max stress in tension | 764 MPa | 1624 MPa |
| Max stress in compression | 710 MPa | 1201 MPa |
| Max deflection | 13.9 mm | 33.6 mm |
| Reserve factor | 1.7 | 1.0 |
* Confidential (Withheld)
Subject has minimal deflection under load
- As a result of little deflection, new design has much lesser stress, while circular design failed in compression.
- Reserve factor of new design is around 1.7 (RF=1 means to fail)
