Homogenization and Equivalent Beam Model for Fiber-Reinforced Tubular Profiles

Gnoli, Daniel; Babamohammadi, Sajjad; Fantuzzi, Nicholas

doi:10.3390/ma13092069

Cited by 7 publications

(3 citation statements)

References 61 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although material testing is usually the most reliable approach to obtain credible data for design, it is costly, time-consuming, and thus impractical and very limited in its applicability for structural design purposes. For these reasons, the micromechanics approach, the technique used to obtain values of composite materials, is often adopted, whereby relatively accurate homogenization models are used to predict the equivalent properties of laminated composites [ 17 , 18 , 19 , 20 ].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Material Properties of Multilayered Laminates Determined by Testing and Micromechanics

2021

View full text Add to dashboard Cite

This paper presents an experimental material campaign focusing on fiber-reinforced polymers (FRP) to be applied in a novel bridge deck panel. Laminas based on most commonly used fibers, i.e., glass, carbon, basalt and aramid, were prepared and studied in tension, shear and compression. In the subsequent test stages, different fabric reinforcements (uni- and bi-directional fabrics, woven fabrics, CSM layers) were considered for glass laminas only, and finally, a resultant laminate was designed and tested. Such an approach gives a great opportunity to create “tailor-made” laminates, as required in FRP bridge deck panels. Simultaneously with the laboratory tests, analytical calculations were performed using a few micromechanical models that aimed to determine engineering constants and strength parameters. Then, the results obtained from material testing and analytical calculations were compared, and conclusions on the compliance were drawn. Based on this validation, further analytical calculations may replace time-consuming laboratory tests and facilitate FRP deck design.

show abstract

Section: Introductionmentioning

confidence: 99%

Comparison of Material Properties of Multilayered Laminates Determined by Testing and Micromechanics

2021

View full text Add to dashboard Cite

show abstract

“…Homogenization techniques allow to investigate the macroscopic behavior of a heterogeneous, porous or composite material, considering that the original material is replaced by an equivalent homogeneous material with comparable properties. Gnoli et al [23] presented a simple approach to study a hollow cylinder composite beam as it behaves like an isotropic one. The stiffness matrix of the equivalent 3D Euler-Bernoulli beam model was obtained using the proposed analytical method.…”

Section: Introductionmentioning

confidence: 99%

Stiffness Estimation and Equivalence of Boundary Conditions in FEM Models

et al. 2021

View full text Add to dashboard Cite

The paper deals with methods of equivalence of boundary conditions in finite element models that are based on finite element model updating technique. The proposed methods are based on the determination of the stiffness parameters in the section plate or region, where the boundary condition or the removed part of the model is replaced by the bushing connector. Two methods for determining its elastic properties are described. In the first case, the stiffness coefficients are determined by a series of static finite element analyses that are used to obtain the response of the removed part to the six basic types of loads. The second method is a combination of experimental and numerical approaches. The natural frequencies obtained by the measurement are used in finite element (FE) optimization, in which the response of the model is tuned by changing the stiffness coefficients of the bushing. Both methods provide a good estimate of the stiffness at the region where the model is replaced by an equivalent boundary condition. This increases the accuracy of the numerical model and also saves computational time and capacity due to element reduction.

show abstract

“…Gnoli et al [ 7 ] discussed the validity of commercial finite element codes that implement the classical isotropic beam model for studying some equivalent composite configurations. A simple approach to deal with composite beams as isotropic configurations was developed by removing those complexities related to the modelling of composite materials when 2D and 3D finite element approaches were used.…”

mentioning

confidence: 99%