Predicting compression failure of composite laminates in fire

Summers, P.T.; Lattimer, Brian Y.; Case, Scott W.; Feih, S.

doi:10.1016/j.compositesa.2012.02.003

Cited by 20 publications

(17 citation statements)

References 20 publications

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“…One test was selected to demonstrate the predictive capabilities of the thermo-structural model, additional comparisons for all intermediate-scale tests performed are available in Summers [24]. The test selected was performed on a laminate with a 12 mm thickness, a 38 kW/m 2 heat flux, and an applied load of 25 % of the Euler buckling load.…”

Section: Comparison Of Model Predictions To Test Resultsmentioning

confidence: 99%

“…The structural model uses an analytical beam model to predict the out-of-plane deflection and failure of compressively loaded laminates exposed to a one-sided heating condition. Intermediate-scale tests performed on E-glass vinyl ester laminates by Summers et al [24] were used to validate the thermo-structural model.…”

Section: Discussionmentioning

confidence: 99%

“…Refer to Summers [24] for details. The thermo-structural modeling of the intermediate-scale tests used the thermal and mechanical properties of E-glass Derakane 411-350 vinyl ester laminates [24]. The model was first validated using the intermediate-scale tests.…”

Section: Thermo-structural Model Validation and Sensitivitymentioning

confidence: 99%

See 2 more Smart Citations

Sensitivity Analysis of a Thermo-Structural Model for Materials in Fire

Summers¹,

Lattimer²,

Case³

et al. 2011

Fire Safety Science - Proceedings of the 10th International Sym

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A new thermo-structural model was developed and validated to predict the failure of compressively loaded fiber-reinforced polymer (FRP) laminates during one-sided heating from a fire. The model consists of the best thermal and structural models in the literature integrated into a single predictive model. This includes a one-dimensional pyrolysis model to predict the thermal response of a decomposing material. Using the thermal response to calculate the mechanical properties, an integral structural model was developed considering thermally-induced bending caused by one-sided heating. The thermo-structural model predicts out-of-plane deflections and compressive failure of laminates in fire conditions. This paper also provides an improved failure model for FRP laminates exposed to fire, a first validation study on the modeling approach using intermediate-scale compression load failure tests with a one-side heat flux exposure, and a first sensitivity study of the input parameter effects on the structural response of FRP laminates. Through the sensitivity study, the out-of-plane deflection predictions exhibited little sensitivity to the thermal inputs. However, the time-to-failure predictions were significantly affected by the virgin conductivity and specific heat capacity. The structural inputs exhibited a significant impact on the out-of-plane deflection predictions. The in-plane thermal expansion, residual elastic modulus above the glass transition temperature, and vertical temperature profile significantly affected the magnitude of the out-of-plane deflection; however, only the in-plane thermal expansion and residual elastic modulus affected the failure direction. The time-to-failure prediction was only significantly affected by the residual elastic modulus. A better agreement between the predicted and observed times-to-failure was achieved by reducing the residual elastic modulus.KEYWORDS: sensitivity, thermo-structural, modeling, composites, FRP laminate. NOMENCLATURE LISTING

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Section: Comparison Of Model Predictions To Test Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Sensitivity Analysis of a Thermo-Structural Model for Materials in Fire

Summers¹,

Lattimer²,

Case³

et al. 2011

Fire Safety Science - Proceedings of the 10th International Sym

Self Cite

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“…Existing models for describing the thermal response of decomposing composite materials have been proposed by Henderson et al [1][2][3], Dimitrienko [4][5][6][7][8][9], Feih [10][11][12], Summers [13], Zhang and Scott [14,15], and Luo and DesJardin [16,17]. A one-dimensional transient thermal model for a glass-phenolic system was developed by Henderson and Florio et al [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

“…The time-to-failure is determined by comparing the average compressive strength of the laminate with the compressive force. Summers [13] studied the compression failure of polymer composite laminate, using a one-dimensional heat and mass transfer model implemented within a Matlab-based toolkit. Zhang and Scott [14,15] developed a three-dimensional thermal and mechanical model by extending Henderson's 1-D thermal model and including the viscoelastic effects of composite materials in fire and implemented it in Abaqus via its user-defined material models.…”

Section: Introductionmentioning

confidence: 99%

Thermo-Mechanical Damage Modeling of Polymer Matrix Composite Structures in Fire

Luo¹,

Lua²

2011

Fire Safety Science - Proceedings of the 10th International Sym

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The overall objective of this research is to develop a modeling and simulation approach to predict the thermo-mechanical damage of composite materials subjected to fire environments. A three-dimensional thermal damage model is developed for glass-reinforced polymer composite materials subject to high temperature and radiative environments. Homogenization methods are used to determine the properties of damaged material in terms of the volume fractions associated with composite fiber, resin, and char and their individual phase properties. The thermal damage model is implemented in Abaqus via an overlaid element approach and extended to a thermo-mechanical damage model. The solution of the mechanical response is determined based on the existing capabilities in Abaqus with material and geometry nonlinearities. The thermal response of the laminated composite material is studied first. Consistent agreement in temperature is obtained between the numerical predictions and experimental data. The extended thermo-mechanical damage model is then applied to the sandwich structure of composite laminates subject to radiative heating and compressive loading. The predictions of temperature field match very well with experimental data. In addition, the predicted delamination pattern and time-to-failure are in reasonable agreement with the experimental data

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Failure analysis of fiberglass‐vinyl ester composite cylinders subjected to fire and asymmetric transient pressure

2021

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A hybrid numerical method is developed for failure prediction of glass fiber reinforced vinyl ester (GRV) composite cylinders subjected to fire and asymmetric transient pressure. The method is composed of layerwise theory, differential quadrature method, Fourier series expansion, and Newmark's time integration method. To achieve high-accuracy solution, the char formation, resin decomposition, volatile convection, and temperature-dependent material properties are considered. By comparing the developed results with the experimental and numerical results presented in the available literatures, the precision of this method is confirmed. The results reveal that although the polymeric composites are flammable, they are also strong thermal insulators compared to conventional metals, which reduces the flame spread rate from one section to another.

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Predicting compression failure of composite laminates in fire

Cited by 20 publications

References 20 publications

Sensitivity Analysis of a Thermo-Structural Model for Materials in Fire

Sensitivity Analysis of a Thermo-Structural Model for Materials in Fire

Thermo-Mechanical Damage Modeling of Polymer Matrix Composite Structures in Fire

Failure analysis of fiberglass‐vinyl ester composite cylinders subjected to fire and asymmetric transient pressure

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