Details
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the 18th 2008 International Offshore and Polar Engineering Conference, ISOPE 2008 |
| Pages | I |
| Publication status | Published - 2008 |
| Event | 18th 2008 International Offshore and Polar Engineering Conference, ISOPE 2008 - Vancouver, BC, Canada Duration: 6 Jul 2008 → 11 Jul 2008 |
Publication series
| Name | Proceedings of the International Offshore and Polar Engineering Conference |
|---|---|
| ISSN (Print) | 1098-6189 |
| ISSN (electronic) | 1555-1792 |
Abstract
A new kind of tower construction, calling hybrid tower, was developed for offshore wind energy converters. The tower sections consisted of two steel shells that were bonded together with a core material. The core between the inner an outer steel face increased the stability of the shells. Compared with linear buckling analyses, the validity of a laminate composite shell theory was proven. With model scale tests, the stability of sandwich shells was analyzed against shell buckling due to axial compression and compared to tests with steel shells. The test series showed a significant increase in bearing capacity for sandwich cylinders, which depended on the compressive strength of the core materials. The sandwich shells with a grout as core material showed a catastrophic post buckling like steel shells. In contrast to this, the elastomer core supported a ductile post buckling. The failure criteria for all variants of tested sandwich shells was more a local failure due to the steel faces called face wrinkling and not a global shell buckling. The consideration of additional bearing capacities due to the core materials was valid, and in combination with high-strength steels, it could offer a new alternative solution for tower sections of offshore wind energy converters. This is an abstract of a paper presented at the Eighteenth International Offshore and Polar Engineering Conference (Vancouver, Canada 7/6-11/2008).
Keywords
- Axial loading, Buckling, Core material, Hybrid tower, Sandwich cylinder, Shell stability, Wind energy
ASJC Scopus subject areas
- Energy(all)
- Energy Engineering and Power Technology
- Engineering(all)
- Ocean Engineering
- Engineering(all)
- Mechanical Engineering
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Proceedings of the 18th 2008 International Offshore and Polar Engineering Conference, ISOPE 2008. 2008. p. I (Proceedings of the International Offshore and Polar Engineering Conference).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Hybrid towers for offshore wind energy converters
AU - Schaumann, Peter
AU - Keindorf, Christian
PY - 2008
Y1 - 2008
N2 - A new kind of tower construction, calling hybrid tower, was developed for offshore wind energy converters. The tower sections consisted of two steel shells that were bonded together with a core material. The core between the inner an outer steel face increased the stability of the shells. Compared with linear buckling analyses, the validity of a laminate composite shell theory was proven. With model scale tests, the stability of sandwich shells was analyzed against shell buckling due to axial compression and compared to tests with steel shells. The test series showed a significant increase in bearing capacity for sandwich cylinders, which depended on the compressive strength of the core materials. The sandwich shells with a grout as core material showed a catastrophic post buckling like steel shells. In contrast to this, the elastomer core supported a ductile post buckling. The failure criteria for all variants of tested sandwich shells was more a local failure due to the steel faces called face wrinkling and not a global shell buckling. The consideration of additional bearing capacities due to the core materials was valid, and in combination with high-strength steels, it could offer a new alternative solution for tower sections of offshore wind energy converters. This is an abstract of a paper presented at the Eighteenth International Offshore and Polar Engineering Conference (Vancouver, Canada 7/6-11/2008).
AB - A new kind of tower construction, calling hybrid tower, was developed for offshore wind energy converters. The tower sections consisted of two steel shells that were bonded together with a core material. The core between the inner an outer steel face increased the stability of the shells. Compared with linear buckling analyses, the validity of a laminate composite shell theory was proven. With model scale tests, the stability of sandwich shells was analyzed against shell buckling due to axial compression and compared to tests with steel shells. The test series showed a significant increase in bearing capacity for sandwich cylinders, which depended on the compressive strength of the core materials. The sandwich shells with a grout as core material showed a catastrophic post buckling like steel shells. In contrast to this, the elastomer core supported a ductile post buckling. The failure criteria for all variants of tested sandwich shells was more a local failure due to the steel faces called face wrinkling and not a global shell buckling. The consideration of additional bearing capacities due to the core materials was valid, and in combination with high-strength steels, it could offer a new alternative solution for tower sections of offshore wind energy converters. This is an abstract of a paper presented at the Eighteenth International Offshore and Polar Engineering Conference (Vancouver, Canada 7/6-11/2008).
KW - Axial loading
KW - Buckling
KW - Core material
KW - Hybrid tower
KW - Sandwich cylinder
KW - Shell stability
KW - Wind energy
UR - http://www.scopus.com/inward/record.url?scp=58649085498&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:58649085498
SN - 9781880653708
T3 - Proceedings of the International Offshore and Polar Engineering Conference
SP - I
BT - Proceedings of the 18th 2008 International Offshore and Polar Engineering Conference, ISOPE 2008
T2 - 18th 2008 International Offshore and Polar Engineering Conference, ISOPE 2008
Y2 - 6 July 2008 through 11 July 2008
ER -