Spot Welds
This seminar will provide you with insights into the options to model and simulate component connections in LS-DYNA. In numerical simulations, the most frequently used connections, such as adhesive bonding, bolt fastening, welding, spot-weld adhesive bonding or riveting, each require a specific structural and material model. For this reason, we will thoroughly deal with the degree of support and structural stability provided by the individual connections and demonstrate possible modelling approaches (in conjunction with flange models).
Currently used models will be discussed, and the reliability of the results obtained critically reviewed with particular emphasis on scenarios that include connection failure. Also, for welded and bolted connections in particular, the most recent LS-DYNA releases included a large number of new features and improvements. For example, the contact treatment of flanges has been expanded to enable a better assessment of the spot-weld forces at solid and beam elements. Further failure options have also been introduced. In addition, a new keyword is available to model bolted connections, which allows for a simplified prestressing definition.
Content:
- Spot-welds/rivets
- Options to model spot welds
- Discussion of element types and formulations
- Tied contacts, flange-flange contact
- Material modeling of spot-welds
- Definition of damage and failure
- Analysis of spot-weld forces
- Prestressed and non-prestressed bolted connections
- Options to model spot welds
- Options to model bolted connections
- Contact formulations for bolts
- Analysis of bolt forces
- KEYWORD: INITIAL_STRESS_SECTION for automated bolt prestressing
- Adhesive bonds
- Types of adhesive bonds: assembly adhesives, structural adhesives
- Modelling the adhesive joint
- Element formulation for continuum elements
- Special hourglass control
- Application and use of cohesive elements
- Connection by tied contacts
- Established and new material models
- Spot-weld adhesive bonding
- Verification and validation of connection technology models
The seminar is designed for engineers with practical simulation experience who wish to broaden their knowledge in the field of connection simulations using LS-DYNA.
| Dates | Registration | Calendar | Duration/days | Location | Lecturer | Fee | Language |
| 27.09.2012 | Register |
|
2 | Stuttgart |
Dr. Markus Feucht, Dr. Andre Haufe, Dr. T. Graf
(DYNAmore, Daimler AG)
|
900,- EUR | german |
