Potential and benefit of green roof energy renovation of existing residential buildings with a flat roof in Belgrade
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This paper considers the phenomenon of the instability of steel plane frame structures in the elastic-plastic domain. The numerical analysis uses FEM, where the corresponding stiffness matrices are based upon the trigonometric and hyperbolic interpolation functions of normal forces. The tangent modulus concept is applied when buckling occurs in the plastic range. Thus, the stiffness matrices for nonlinear material behavior are also derived. The procedure for determining effective length factors of compressed columns, which implies a global stability analysis of entire frames, is established too. It means that the proposed approach is based on the assumption that the collapse of the structure occurs when the most loaded columns reach their stability limit. So, the presented procedure enables the calculation of the real critical load of plane frame structures in the elastic-plastic domain and determines the corresponding effective length factors.
Кључне речи:
green roof / life cycle cost / energy renovation / sensitivity analysisИзвор:
Applied Sciences, MDPI, 2023, 13, 7348-Финансирање / пројекти:
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200092 (Универзитет у Београду, Грађевински факултет) (RS-MESTD-inst-2020-200092)
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GraFarTY - JOUR AU - Perović, Zoran AU - Ćorić, Stanko AU - Isaković, Snežana AU - Šumarac, Dragoslav PY - 2023 UR - https://grafar.grf.bg.ac.rs/handle/123456789/3151 AB - This paper considers the phenomenon of the instability of steel plane frame structures in the elastic-plastic domain. The numerical analysis uses FEM, where the corresponding stiffness matrices are based upon the trigonometric and hyperbolic interpolation functions of normal forces. The tangent modulus concept is applied when buckling occurs in the plastic range. Thus, the stiffness matrices for nonlinear material behavior are also derived. The procedure for determining effective length factors of compressed columns, which implies a global stability analysis of entire frames, is established too. It means that the proposed approach is based on the assumption that the collapse of the structure occurs when the most loaded columns reach their stability limit. So, the presented procedure enables the calculation of the real critical load of plane frame structures in the elastic-plastic domain and determines the corresponding effective length factors. T2 - Applied Sciences, MDPI T1 - Potential and benefit of green roof energy renovation of existing residential buildings with a flat roof in Belgrade IS - 13 IS - 13 SP - 7348 DO - 10.3390/app13137348 ER -
@article{ author = "Perović, Zoran and Ćorić, Stanko and Isaković, Snežana and Šumarac, Dragoslav", year = "2023", abstract = "This paper considers the phenomenon of the instability of steel plane frame structures in the elastic-plastic domain. The numerical analysis uses FEM, where the corresponding stiffness matrices are based upon the trigonometric and hyperbolic interpolation functions of normal forces. The tangent modulus concept is applied when buckling occurs in the plastic range. Thus, the stiffness matrices for nonlinear material behavior are also derived. The procedure for determining effective length factors of compressed columns, which implies a global stability analysis of entire frames, is established too. It means that the proposed approach is based on the assumption that the collapse of the structure occurs when the most loaded columns reach their stability limit. So, the presented procedure enables the calculation of the real critical load of plane frame structures in the elastic-plastic domain and determines the corresponding effective length factors.", journal = "Applied Sciences, MDPI", title = "Potential and benefit of green roof energy renovation of existing residential buildings with a flat roof in Belgrade", number = "13, 13", pages = "7348", doi = "10.3390/app13137348" }
Perović, Z., Ćorić, S., Isaković, S.,& Šumarac, D.. (2023). Potential and benefit of green roof energy renovation of existing residential buildings with a flat roof in Belgrade. in Applied Sciences, MDPI(13), 7348. https://doi.org/10.3390/app13137348
Perović Z, Ćorić S, Isaković S, Šumarac D. Potential and benefit of green roof energy renovation of existing residential buildings with a flat roof in Belgrade. in Applied Sciences, MDPI. 2023;(13):7348. doi:10.3390/app13137348 .
Perović, Zoran, Ćorić, Stanko, Isaković, Snežana, Šumarac, Dragoslav, "Potential and benefit of green roof energy renovation of existing residential buildings with a flat roof in Belgrade" in Applied Sciences, MDPI, no. 13 (2023):7348, https://doi.org/10.3390/app13137348 . .