TOPOLOGY OPTIMIZATION OF PRETENSIONED CONCRETE BEAMS CONSIDERING MATERIAL NONLINEARITY

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Shobeiri v.; AHMADI NEDUSHAN B.

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Journal Paper

Paper Information

Journal: International Journal of Optimization in Civil Engineering Year:2019 | Volume:9 | Issue:4 Page(s): 629-650

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Information Journal Paper

Title

TOPOLOGY OPTIMIZATION OF PRETENSIONED CONCRETE BEAMS CONSIDERING MATERIAL NONLINEARITY

Author(s)

Shobeiri v. | AHMADI NEDUSHAN B. | Issue Writer Certificate

Keywords

topology optimization

strut-and-tie models

3D pretensioned concrete

material nonlinearity

Abstract

In this paper, the bi-directional evolutionary structural optimization (BESO) method is used to find optimal layouts of 3D prestressed concrete beams. Considering the element sensitivity number as the design variable, the mathematical formulation of topology optimization is developed based on the ABAQUS finite element software package. The surface-to-surface contact with a small sliding between concrete and prestressing steels is assumed to accurately model the prestressing effects. The concrete constitutive model used is the concrete damaged plasticity (CDP) model in ABAQUS. The integration of the optimization algorithm and finite element analysis (FEA) tools is done by using the ABAQUS scripting interface. A pretensioned prestressed simply supported beam is modeled to show capabilities of the proposed method in finding optimal topologies of prestressed concrete beams. Many issues relating to topology optimization of prestressed concrete beams such as the effects of prestressing stress, geometrical discontinuities and height constraints on optimal designs and strut-and-tie models (STMs) are studied in the example. The results show that the proposed method can efficiently be used for layout optimization of prestressed concrete beams.

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APA: Copy

Shobeiri, v., & AHMADI NEDUSHAN, B.. (2019). TOPOLOGY OPTIMIZATION OF PRETENSIONED CONCRETE BEAMS CONSIDERING MATERIAL NONLINEARITY. INTERNATIONAL JOURNAL OF OPTIMIZATION IN CIVIL ENGINEERING, 9(4), 629-650. SID. https://sid.ir/paper/329520/en

Vancouver: Copy

Shobeiri v., AHMADI NEDUSHAN B.. TOPOLOGY OPTIMIZATION OF PRETENSIONED CONCRETE BEAMS CONSIDERING MATERIAL NONLINEARITY. INTERNATIONAL JOURNAL OF OPTIMIZATION IN CIVIL ENGINEERING[Internet]. 2019;9(4):629-650. Available from: https://sid.ir/paper/329520/en

IEEE: Copy

v. Shobeiri, and B. AHMADI NEDUSHAN, “TOPOLOGY OPTIMIZATION OF PRETENSIONED CONCRETE BEAMS CONSIDERING MATERIAL NONLINEARITY,” INTERNATIONAL JOURNAL OF OPTIMIZATION IN CIVIL ENGINEERING, vol. 9, no. 4, pp. 629–650, 2019, [Online]. Available: https://sid.ir/paper/329520/en

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