Details
| Original language | English |
|---|---|
| Title of host publication | ECCOMAS Congress 2016 - Proceedings of the 7th European Congress on Computational Methods in Applied Sciences and Engineering |
| Editors | M. Papadrakakis, V. Plevris, G. Stefanou, V. Papadopoulos |
| Pages | 8103-8114 |
| Number of pages | 12 |
| ISBN (Electronic) | 9786188284401 |
| Publication status | Published - 2016 |
| Event | 7th European Congress on Computational Methods in Applied Sciences and Engineering, ECCOMAS Congress 2016 - Crete, Greece Duration: 5 Jun 2016 → 10 Jun 2016 |
Publication series
| Name | ECCOMAS Congress 2016 - Proceedings of the 7th European Congress on Computational Methods in Applied Sciences and Engineering |
|---|---|
| Volume | 4 |
Abstract
Based on a first-order shear-deformation theory a four-noded shell element is formulated for composite laminates with and without a delamination. Interlaminar stresses are calculated to evaluate a delamination criterion. The presentation will show how and how accurate. Once the danger of delamination is detected the displacement field is enriched in the sense of the eXtended FEM to account for a discontinuity at an arbitrary position. The remaining strength after starting delamination is simulated by a mixed-mode cohesive zone model based on energy release. Contact when reclosing a discontinuity is included. Large rotations are covered by Green's strain. The developed formulation is tested for shell problems by comparing its results with available benchmark tests for in- and out-of-plane load cases. The feasibility and practicality of the presented model and its advantage over the approach using two shell elements at the predefined plane of the discontinuity, connected by a third one, a cohesive zone element, is demonstrated. Then, linear and non-linear buckling analyses for composite laminates containing a delamination are performed. It is shown how imperfections of the delamination type, i.e. concerning the discontinuity, used for nonlinear analysis are based on the modes from linear buckling. The full process from starting with one layer of elements over detecting a delamination to simulating its growth and its interaction with buckling is outlined.
Keywords
- Buckling, Delamination, Shells, XFEM
ASJC Scopus subject areas
- Computer Science(all)
- Artificial Intelligence
- Mathematics(all)
- Applied Mathematics
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ECCOMAS Congress 2016 - Proceedings of the 7th European Congress on Computational Methods in Applied Sciences and Engineering. ed. / M. Papadrakakis; V. Plevris; G. Stefanou; V. Papadopoulos. 2016. p. 8103-8114 (ECCOMAS Congress 2016 - Proceedings of the 7th European Congress on Computational Methods in Applied Sciences and Engineering; Vol. 4).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Xfem analysis - including buckling - of composite shells containing delamination
AU - Rust, Wilhelm J.H.
AU - Yazdani, Saleh
AU - Wriggers, Peter
PY - 2016
Y1 - 2016
N2 - Based on a first-order shear-deformation theory a four-noded shell element is formulated for composite laminates with and without a delamination. Interlaminar stresses are calculated to evaluate a delamination criterion. The presentation will show how and how accurate. Once the danger of delamination is detected the displacement field is enriched in the sense of the eXtended FEM to account for a discontinuity at an arbitrary position. The remaining strength after starting delamination is simulated by a mixed-mode cohesive zone model based on energy release. Contact when reclosing a discontinuity is included. Large rotations are covered by Green's strain. The developed formulation is tested for shell problems by comparing its results with available benchmark tests for in- and out-of-plane load cases. The feasibility and practicality of the presented model and its advantage over the approach using two shell elements at the predefined plane of the discontinuity, connected by a third one, a cohesive zone element, is demonstrated. Then, linear and non-linear buckling analyses for composite laminates containing a delamination are performed. It is shown how imperfections of the delamination type, i.e. concerning the discontinuity, used for nonlinear analysis are based on the modes from linear buckling. The full process from starting with one layer of elements over detecting a delamination to simulating its growth and its interaction with buckling is outlined.
AB - Based on a first-order shear-deformation theory a four-noded shell element is formulated for composite laminates with and without a delamination. Interlaminar stresses are calculated to evaluate a delamination criterion. The presentation will show how and how accurate. Once the danger of delamination is detected the displacement field is enriched in the sense of the eXtended FEM to account for a discontinuity at an arbitrary position. The remaining strength after starting delamination is simulated by a mixed-mode cohesive zone model based on energy release. Contact when reclosing a discontinuity is included. Large rotations are covered by Green's strain. The developed formulation is tested for shell problems by comparing its results with available benchmark tests for in- and out-of-plane load cases. The feasibility and practicality of the presented model and its advantage over the approach using two shell elements at the predefined plane of the discontinuity, connected by a third one, a cohesive zone element, is demonstrated. Then, linear and non-linear buckling analyses for composite laminates containing a delamination are performed. It is shown how imperfections of the delamination type, i.e. concerning the discontinuity, used for nonlinear analysis are based on the modes from linear buckling. The full process from starting with one layer of elements over detecting a delamination to simulating its growth and its interaction with buckling is outlined.
KW - Buckling
KW - Delamination
KW - Shells
KW - XFEM
UR - http://www.scopus.com/inward/record.url?scp=84995487825&partnerID=8YFLogxK
U2 - 10.7712/100016.2398.10132
DO - 10.7712/100016.2398.10132
M3 - Conference contribution
AN - SCOPUS:84995487825
T3 - ECCOMAS Congress 2016 - Proceedings of the 7th European Congress on Computational Methods in Applied Sciences and Engineering
SP - 8103
EP - 8114
BT - ECCOMAS Congress 2016 - Proceedings of the 7th European Congress on Computational Methods in Applied Sciences and Engineering
A2 - Papadrakakis, M.
A2 - Plevris, V.
A2 - Stefanou, G.
A2 - Papadopoulos, V.
T2 - 7th European Congress on Computational Methods in Applied Sciences and Engineering, ECCOMAS Congress 2016
Y2 - 5 June 2016 through 10 June 2016
ER -