Análisis de pandeo en laminados sometidos a cargas biaxiales utilizando probetas cruciformes
This study presents the compression-compression test with cruciform specimens (test CC) as a viable methodology to assess the geometric instability of a ±45° symmetric laminate. The central region of the specimen, subjected to biaxial loading, exhibits a geometry similar to that of a square plate fi...
| Autores: | , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2026 |
| País: | España |
| Institución: | Universidad de Castilla-La Mancha |
| Repositorio: | RUIdeRA. Repositorio Institucional de la UCLM |
| OAI Identifier: | oai:ruidera.uclm.es:10578/46807 |
| Acceso en línea: | https://www.scipedia.com/public/Serna_Moreno_Horta_Munoz_2025a# https://hdl.handle.net/10578/46807 |
| Access Level: | acceso abierto |
| Palabra clave: | CFRP Ensayos biaxales Mecánica de laminados Pandeo Probetas cruciformes |
| Sumario: | This study presents the compression-compression test with cruciform specimens (test CC) as a viable methodology to assess the geometric instability of a ±45° symmetric laminate. The central region of the specimen, subjected to biaxial loading, exhibits a geometry similar to that of a square plate fixed along its entire perimeter.The bifurcation of the strains recorded at the top and bottom surfaces of the laminate is considered to be the threshold between the in-plane biaxial response and the response dominated by bending and torsional moments.The nonlinearities observed in the evolution of the stress-strain relationship in the region subjected to biaxial loading are confirmed to be independent of the response of the specimen arms.The bending-torsion coupling effects at the beginning of the bifurcation are observed experimentally in the deflection surface recorded by Digital Image Correlation.The results obtained suggest that the test CC is potentially suitable for the observation and measurement of buckling modes under various boundary conditions. However, more work is needed to reduce the quantitative dispersion.Specifically, the research should focus on minimizing geometric imperfections and load misalignments. |
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