Structural Integrity using Finite Element Analysis
| The mesh of a sub-model of a ships hull |
|
| Stress contour plot sub-model showing hot spot stresses and consequently areas of reduced fatigue life |
|
Fracture and defect assessment
- Development of assessment procedures (BS7910)
- Engineering critical assessments (ECAs)
- Calculation of K, J, CTOD
- Calculation of collapse loads
- Dynamic fracture
- Non-continuum model of creep cracking
- V-factor
- Crack growth modelling
- Inputs to ECAs
- Effect of residual stresses
- Reheat cracking
- Local approach
- Fatigue assessments
Benefits of modelling for structural integrity
- More accurate ECAs
- Evaluate life extension opportunities
- Assessment of complex shapes and geometries
- Prediction of fatigue life of welded structures
Prediction of damage in a composite joint - subroutines used with ABAQUS finite element software have been used to define more accurately the behaviour of engineering materials. The figure below shows a map of a damage parameter
related to fibre buckling in a composite joint subjected to bending
|
To find out more about how TWI could benefit your company, please contact us at fea@twi.co.uk
Copyright ©2005 TWI Ltd
Information and advice from TWI and its partners are provided in good faith and based, where appropriate, on the best engineering knowledge available at the time and incorporated into TWI's website in accordance with TWI's ISO 9001:2000 accredited status. No warranty expressed or implied is given regarding the results or effects of applying information or advice obtained from the website, nor is any responsibility accepted for any consequential loss or damage.
