Computational Technology Resources - CCP

G. Milani¹ and M. Bruggi²

¹Department of Architecture, Built Environment and Construction Engineering, Politecnico di Milano, Milan, Italy
²Department of Civil and Environment Engineering, Politecnico di Milano, Milan, Italy

doi:10.4203/ccp.108.165

purchase the full-text of this paper

G. Milani, M. Bruggi, "A Strut-and-Tie Topology Optimization Model for the Pushover Analysis of In-Plane Loaded Masonry Walls", in J. Kruis, Y. Tsompanakis, B.H.V. Topping, (Editors), "Proceedings of the Fifteenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 165, 2015. doi:10.4203/ccp.108.165

Keywords: masonry, in-plane loads, pushover analyses, topology optimization, finite element.

Summary

This paper presents a rigid triangular finite element macro-model for the pushover analysis of in plane loaded masonry walls. The shape and position of rigid triangular elements are paramount parameters for a correct evaluation of the failure modes of piers and spandrels. Such parameters are here evaluated by means of a topology optimization approach where masonry is treated by means of a quasi no-tension material. In order to tackle elastic and inelastic deformations, interfaces between adjoining triangles are assumed to behave as elasto-plastically with softening in both tension and compression, with peak tensile strength almost vanishing. The two-step procedure competes favorably with classic equivalent frame approaches because it does not require a-priori assumptions on the position of the triangular elements and on the length of the rigid offsets. Furthermore, excellent stability of the algorithm and numerical efficiency are experienced. An example of technical relevance is discussed, exhibiting promising comparisons with results obtained with different equivalent frame procedures.

purchase the full-text of this paper (price £20)

go to the previous paper
go to the next paper
return to the table of contents
return to the book description
purchase this book (price £75 +P&P)

	Computational & Technology Resources an online resource for computational, engineering & technology publications
	not logged in - login
Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 108 PROCEEDINGS OF THE FIFTEENTH INTERNATIONAL CONFERENCE ON CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING COMPUTING Edited by: J. Kruis, Y. Tsompanakis and B.H.V. Topping Paper 165 A Strut-and-Tie Topology Optimization Model for the Pushover Analysis of In-Plane Loaded Masonry Walls G. Milani¹ and M. Bruggi² ¹Department of Architecture, Built Environment and Construction Engineering, Politecnico di Milano, Milan, Italy ²Department of Civil and Environment Engineering, Politecnico di Milano, Milan, Italy doi:10.4203/ccp.108.165 purchase the full-text of this paper Full Bibliographic Reference for this paper G. Milani, M. Bruggi, "A Strut-and-Tie Topology Optimization Model for the Pushover Analysis of In-Plane Loaded Masonry Walls", in J. Kruis, Y. Tsompanakis, B.H.V. Topping, (Editors), "Proceedings of the Fifteenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 165, 2015. doi:10.4203/ccp.108.165 Keywords: masonry, in-plane loads, pushover analyses, topology optimization, finite element. Summary This paper presents a rigid triangular finite element macro-model for the pushover analysis of in plane loaded masonry walls. The shape and position of rigid triangular elements are paramount parameters for a correct evaluation of the failure modes of piers and spandrels. Such parameters are here evaluated by means of a topology optimization approach where masonry is treated by means of a quasi no-tension material. In order to tackle elastic and inelastic deformations, interfaces between adjoining triangles are assumed to behave as elasto-plastically with softening in both tension and compression, with peak tensile strength almost vanishing. The two-step procedure competes favorably with classic equivalent frame approaches because it does not require a-priori assumptions on the position of the triangular elements and on the length of the rigid offsets. Furthermore, excellent stability of the algorithm and numerical efficiency are experienced. An example of technical relevance is discussed, exhibiting promising comparisons with results obtained with different equivalent frame procedures. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £75 +P&P)
Back to top	©Civil-Comp Limited 2023 - terms & conditions