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N. Pingaro, G. Milani, "An eight-dof truss finite element for FRCM reinforced rigid substrates subjected to shear tests", in P. Ivanyi, J. Kruis, B.H.V. Topping, (Editors), "Proceedings of the Seventeenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 6, Paper 6.4, 2023, doi:10.4203/ccc.6.6.4

Keywords: eight-dof, 1D-finite element, rigid support, FRCM, single lap shear tests.

Abstract

An 8-dof 1D finite element suited to study an FRCM reinforcing system is presented. The element is constituted by three trusses in parallel representing external matrix, central fiber and internal matrix layers, mutually exchanging tangential stresses by means of shear springs applied at the extremes of the element. Non-linearity is possible exclusively in upper/lower matrix layers and at the interface. A linear softening with residual tangential strength is assumed as constitutive law for the interface. Matrix is assumed elastic with linear softening in tension and infinite resistant in compression. The internal matrix layer is connected to the support by means of two elastic springs applied at the element nodes. The 8-dofs are represented by the nodal longitudinal displacements of the three layers plus those of the support. The present paper discusses the derivation of the element stiffness and how to deal with material non-linearities. An application of technical relevance is finally presented, relying into a masonry pillar reinforced with an FRCM package and subjected to a single lap shear experimental test.

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Front Page Browse CCC CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Conferences ISSN 2753-3239 CCC: 6 PROCEEDINGS OF THE SEVENTEENTH INTERNATIONAL CONFERENCE ON CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING COMPUTING Edited by: P. Ivanyi, J. Kruis and B.H.V. Topping Paper 6.4 An eight-dof truss finite element for FRCM reinforced rigid substrates subjected to shear tests N. Pingaro and G. Milani Department of Architecture, Built Environment and Construction Engineering, Technical University of Milan, Milan, Italy doi:10.4203/ccc.6.6.4 Full Bibliographic Reference for this paper N. Pingaro, G. Milani, "An eight-dof truss finite element for FRCM reinforced rigid substrates subjected to shear tests", in P. Ivanyi, J. Kruis, B.H.V. Topping, (Editors), "Proceedings of the Seventeenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 6, Paper 6.4, 2023, doi:10.4203/ccc.6.6.4 Keywords: eight-dof, 1D-finite element, rigid support, FRCM, single lap shear tests. Abstract An 8-dof 1D finite element suited to study an FRCM reinforcing system is presented. The element is constituted by three trusses in parallel representing external matrix, central fiber and internal matrix layers, mutually exchanging tangential stresses by means of shear springs applied at the extremes of the element. Non-linearity is possible exclusively in upper/lower matrix layers and at the interface. A linear softening with residual tangential strength is assumed as constitutive law for the interface. Matrix is assumed elastic with linear softening in tension and infinite resistant in compression. The internal matrix layer is connected to the support by means of two elastic springs applied at the element nodes. The 8-dofs are represented by the nodal longitudinal displacements of the three layers plus those of the support. The present paper discusses the derivation of the element stiffness and how to deal with material non-linearities. An application of technical relevance is finally presented, relying into a masonry pillar reinforced with an FRCM package and subjected to a single lap shear experimental test. download the full-text of this paper (PDF, 11 pages, 554 Kb) go to the previous paper go to the next paper return to the table of contents return to the volume description
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