Mechanical characterization of lightweight foam-based sandwich panels

Vălean, Cristina; Şoşdean, Corina; Marșavina, Liviu; Linul, Emanoil

doi:10.1016/j.matpr.2020.12.035

Cited by 7 publications

(3 citation statements)

References 28 publications

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“…Some of these had different dimensions as well as face and core materials. In some cases, the deviation of the linear deformation curve is attributed to the yielding of the face sheets [28,29]. This was not the case in the tests presented here.…”

Section: Shear Testsmentioning

confidence: 71%

“…They established failure-mode maps based on their analytical and experimental investigations. Vălean et al [29] considered sandwich panels with a rigid PUR foam core (40 kg/m 3 ) and steel facings. They carried out bending, tensile, and compression tests in accordance with EN 14509: 2013 [16] and characterized the material in the thickness direction.…”

Section: Introductionmentioning

confidence: 99%

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Material Behavior of PIR Rigid Foam in Sandwich Panels: Studies beyond Construction Industry Standard

Steineck,

Lange

2024

Materials

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A deep understanding of the material parameters and the behavior of sandwich panels, which are used in the construction industry as roof and façade cladding, is important for the design of these construction components. Due to the constant changes in the polyurethane (PU) foams used as a core material, the experimental database for the current foams is small. Nowadays, there is an increasing number of failures of façade and roof panels after installation. This article presents a variety of experimental investigations on sandwich panels from two manufacturers with a core of polyisocyanurate (PIR) rigid foam (density: 40 kg/m3). As part of this study, compression, tension, shear, and bending tests were performed in several spatial directions and over the range required by the standard. The results of the tests showed the orthotropy of the core material and the dependence of the material on the direction and type of load. The stress-strain curves showed linear and non-linear areas. Using the data from this experimental study, a numerical model was implemented which utilized the Hill yield criterion to represent the orthotropy of the core material. The present investigation suggests that the classical von Mises failure criterion, used in many studies, is not suitable for the foam system applied in these sandwich panels. Instead, the Tsai–Wu criterion is more appropriate for defining the failure stresses.

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Section: Shear Testsmentioning

confidence: 71%

Section: Introductionmentioning

confidence: 99%

Material Behavior of PIR Rigid Foam in Sandwich Panels: Studies beyond Construction Industry Standard

Steineck,

Lange

2024

Materials

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show abstract

“…Prevention of the relative slipping of facings requires a core with a sufficiently high shear modulus, as well as adequate shear strength [10]. Valean et al investigated the mechanical behavior of a polyurethane-foam-based sandwich panel under tensile and bending tests [11]. They found that in the transverse tensile test, the foam-based composite structure showed a brittle behavior until its final failure, the fracture taking place in the core and not at the core-face interface.…”

Section: Introductionmentioning

confidence: 99%

Numerical and Experimental Study on Loading Behavior of Facade Sandwich Panels

Stanisavljević,

Golubović Matić,

Komnenović

et al. 2023

Buildings

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This paper focuses on the study of the strength of facade sandwich panels used in building construction. The paper describes the results of experimental and numerical research on the behavior of sandwich panels made of polyisocyanurate core (PIR) and their structural connections when exposed to tensile and compressive loads. In the initial phase of this study, laboratory tests were performed to determine the physical and mechanical characteristics of the material from which the sandwich panels are made. Laboratory tensile and compression tests were performed on small samples of sandwich facade panels. In order to verify the obtained results, they were compared with the numerical analysis performed in the ANSYS software. The numerical model was found to accurately predict the results of the laboratory tests, suggesting that the model can be used to predict the behavior of these panels under different loads in service. The study showed that the foam core sandwich panel exhibits excellent mechanical properties. The results indicate the suitability of foam-based composite structures in the construction industry for various applications, such as roof and wall structures. The findings of this study may help in the development of lightweight and durable construction materials for the industry.

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Review of bumper materials for spacecraft shield against orbital debris hypervelocity impact

Ren,

Zhang,

et al. 2024

Defence Technology

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Mechanical characterization of lightweight foam-based sandwich panels

Cited by 7 publications

References 28 publications

Material Behavior of PIR Rigid Foam in Sandwich Panels: Studies beyond Construction Industry Standard

Material Behavior of PIR Rigid Foam in Sandwich Panels: Studies beyond Construction Industry Standard

Numerical and Experimental Study on Loading Behavior of Facade Sandwich Panels

Review of bumper materials for spacecraft shield against orbital debris hypervelocity impact

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