Experimental investigation and pseudoelastic truss model for in-plane behavior of corrugated sandwich panels with polyurethane foam core

Ercan Yüksel*, Ahmet Güllü, Hasan Özkaynak, Cihan Soydan, Arastoo Khajehdehi, Erkan Şenol, Amir Mahdi Saghayesh, Hakan Saruhan

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Sandwich panels are commonly used in façades and the roofs of industrial buildings due to their well-known advantages. However, there is limited data about the in-plane behavior of the panels. Hence, this paper aimed to propose a pseudoelastic truss model to represent the effective in-plane stiffness and strength properties of the corrugated sandwich panels with a polyurethane foam core. Two separate sets of experiments (mock-up and system test) were conducted in the laboratory. The variables were the number of fasteners, sheet thickness, loading direction, and number of ribs. The number of fasteners, sheet thickness, and loading direction are the most effective parameters for the in-plane behavior. A formula was proposed to compute axial stiffness of the truss members by considering the effective parameters. Experimental results showed that the proposed robust truss model could give a good estimate of the pseudoelastic stiffness and maximum load bearing capacity of the sandwich panels.

Original languageEnglish
Pages (from-to)823-842
Number of pages20
JournalStructures
Volume29
DOIs
Publication statusPublished - Feb 2021

Bibliographical note

Publisher Copyright:
© 2020 Institution of Structural Engineers

Funding

This study was conducted in the framework of İTÜNOVA Technology Transfer Office Research Project titled “Determination of In-plane Behavior of Corrugated Sandwich Panel Type Roof Shelters.” The financial support provided by Turkish Precast Concrete Association through this project is greatly appreciated. The study was conducted at the Structural and Earthquake Engineering Laboratory (STEELab) of Istanbul Technical University. Support of the laboratory staff and the contributions of Günkut Barka and Hakan Ataköy are gratefully acknowledged.

FundersFunder number
Turkish Precast Concrete Association
Istanbul Teknik Üniversitesi

    Keywords

    • Analytical modelling
    • Mechanical properties
    • Mechanical testing
    • Sandwich panels

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