Strength prediction of a joint composed of a pultruded FRP tube bonded to an FRP lamella

Rauscher, R.; Spang, F.; Lehmann, Martin; Vallée, Till (July 2009). Strength prediction of a joint composed of a pultruded FRP tube bonded to an FRP lamella In: 17th International Conference on Composite Materials. Edinburgh, UK. 27-29 Jul 2009.

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Adhesively bonded connections involving pultruded FRP typically fail in a brittle manner, making their analysis a case study for the application of statistical size effects. For brittle materials, in which failure is often caused by a single critical defect, statistically based size effects on strength are adequately explained by probabilistic theories such as the Weibull strength theory. A previously implemented probabilistic dimensioning method for adhesively bonded balanced joints is extended to a complex joint involving a tube and a lamella, both made of pultruded FRP. Instead of the previously used 2d approach the extension requires a 3d formulation. The entire joint is idealized as being constituted by n elements; its survival depends on the simultaneous survival of all elements. By the means of a 3d FEA, failure triggering stress components in all n elements were determined; a probability of failure is associated to each element using the corresponding combination stresses combined into an appropriate failure criterion, hence defining a theoretical joint strength.

Item Type:	Conference or Workshop Item (Paper)
Division/Institute:	School of Architecture, Wood and Civil Engineering School of Architecture, Wood and Civil Engineering > Institute for Materials and Wood Technology BFH Centres and strategic thematic fields > BFH Centre for Wood - Resource and Material
Name:	Rauscher, R.; Spang, F.; Lehmann, Martin0000-0002-0813-7023 and Vallée, Till
Subjects:	Q Science > Q Science (General) Q Science > QA Mathematics T Technology > T Technology (General) T Technology > TA Engineering (General). Civil engineering (General) T Technology > TH Building construction
Language:	English
Submitter:	Martin Lehmann
Date Deposited:	22 Apr 2020 12:26
Last Modified:	09 Nov 2022 11:14
Uncontrolled Keywords:	Adhesive Bonding FEA FRP Joints Probabilistic Strength
ARBOR DOI:	10.24451/arbor.11370
URI:	https://arbor.bfh.ch/id/eprint/11370