Increasing requirements on resistance and durability in conjunction with weight reduction have advanced the development of composite materials very strongly within the last decades. Composites are no longer used for special applications or subordinate components, but increasingly for components in volume production. Hence concepts are on demand to capture the complex mechanisms of load transfer and failure within numerical simulations.
Very important subgroups of “Composites” are long fiber reinforced composite materials. They typically consist of high-strength carbon or glass fibers which are unidirectionally embedded in thin layers of an epoxy resin matrix. This seminar gives an overview on potential modeling technics of this subgroup. The strong anisotropy of these composite structures leads to complex mechanical behavior which has to be captured in the simulation. Therefore, the available material models in LS-DYNA are introduced and discussed in-depth. Some of these models are implemented and co-developed with the support from DYNAmore employees. Furthermore, different possibilities to model the phenomena of delamination are shown. The applicability and limits are demonstrated by means of small numerical examples.
Content:
- Introduction in composite materials
- Laminate theory
- Material modeling
- Discussion of existing material models in LS-DYNA
- Failure criteria of Chang-Chang, Tsai-Wu- and Hashin
- Modeling of delamination
- Cohesive-elements and tiebreak contact
- General effects by means of examples
- Visualization of simulation results with LS-PrePost
| Dates |
Registration |
Calendar |
Duration/days |
Location |
Lecturer |
Fee |
Language |
| 23.04.2012 |
|
|
2 |
Stuttgart |
Dr. S. Hartmann
|
900,- EUR
|
german
|
| 06.11.2012 |
Register
|
|
2 |
Stuttgart |
Dr. S. Hartmann
|
900,- EUR
|
german
|
