Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Constituent based analysis of composite materials subjected to fire conditions
MCT (multicontinuum theory) is based on the two-constituent decomposition developed by Hill (Hill R. Elastic properties of reinforced solids: some theoretical principles. J Mech Phys Sol 1963;11:357-72) to calculate the constituent level stress/strain fields of a composite material from the smeared composite stress/strain fields. The work expands previous isothermal MCT to include thermal effects related to large temperature gradients caused by fires. Analytical fire conditions are simulated using a 1-D heat diffusion equation, which provides time-dependent temperature gradients through the thickness of the composite. When the composite materials are subjected to extreme thermal conditions, the thermal residual stresses resulting from the fiber and matrix coefficient of thermal expansion mismatch are significant. Progressive failure simulations are performed using the thermal-mechanical MCT algorithm, in which an increased rate of failure is observed for a composite material when it is subjected to large external temperature gradients similar to those experienced in fire environments.
Constituent based analysis of composite materials subjected to fire conditions
MCT (multicontinuum theory) is based on the two-constituent decomposition developed by Hill (Hill R. Elastic properties of reinforced solids: some theoretical principles. J Mech Phys Sol 1963;11:357-72) to calculate the constituent level stress/strain fields of a composite material from the smeared composite stress/strain fields. The work expands previous isothermal MCT to include thermal effects related to large temperature gradients caused by fires. Analytical fire conditions are simulated using a 1-D heat diffusion equation, which provides time-dependent temperature gradients through the thickness of the composite. When the composite materials are subjected to extreme thermal conditions, the thermal residual stresses resulting from the fiber and matrix coefficient of thermal expansion mismatch are significant. Progressive failure simulations are performed using the thermal-mechanical MCT algorithm, in which an increased rate of failure is observed for a composite material when it is subjected to large external temperature gradients similar to those experienced in fire environments.
Constituent based analysis of composite materials subjected to fire conditions
Auf die Bestandteile bezogene Analyse von Verbundwerkstoffen im Brandfall
Key, Christopher T. (Autor:in) / Lua, James (Autor:in)
Composites, Part A: Applied Science and Manufacturing ; 37 ; 1005-1014
2006
10 Seiten, 8 Bilder, 4 Tabellen, 25 Quellen
Aufsatz (Zeitschrift)
Englisch
Constituent based analysis of composite materials subjected to fire conditions
| British Library Online Contents | 2006
Composite Materials Subjected to Extreme Conditions
| British Library Online Contents | 2016
| Springer Verlag | 2019