2019
DOI: 10.5937/grmk1902015j
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Flexural buckling of hot-finished and cold-formed elliptical hollow section columns: Numerical comparative analysis

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(1 citation statement)
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“…These wall systems consist of two elements of cold-formed steel (CFS), namely stud and track sections characterized by very thin sections which may restrict the use of the LSF for a non-load-bearing wall. These slender sections have better durability and a higher strength-toweight ratio compared to hot rolled steel [1], due to the different fabrication processes that have a significant influence on mechanical material properties [2], In a fire situation, steel material having a high thermal conductivity is vulnerable due to the loss of its mechanical properties [3,4], Therefore, a fire safety must be ensured as one of the important requirements that a building has to include according to contemporary technical rules on structural engineering [5], To study the collapse of structures under elevated temperatures, most research has been done on unprotected hot-rolled structural elements [6][7][8][9][10] or protected structural elements [11][12][13], The structural behaviour of CFS structures under fire is complex and requires substantial, dedicated research on isolated element frames as well as on complete walls and panels. Some studies have proposed various parameters that have a significant influence on the behavior of LSF walls in terms of improving fire resistance by incorporating some protective materials [14], Different single or double layers of wallboard can be used on both sides of the LSF wall, such as plasterboard, magnesium oxide board (MGO) and Cork [15][16][17][18][19], Furthermore, using rockwool and glass fiber to form a new composite innovative panel, cavity insulation, or external insulation sandwiched between two layers of protection wallboards, could be achieved [20,21], Previous research has been conducted to investigate the thermal performance of LSF walls when subjected to fire, including experimental studies and numerical simulation.…”
Section: Introductionmentioning
confidence: 99%
“…These wall systems consist of two elements of cold-formed steel (CFS), namely stud and track sections characterized by very thin sections which may restrict the use of the LSF for a non-load-bearing wall. These slender sections have better durability and a higher strength-toweight ratio compared to hot rolled steel [1], due to the different fabrication processes that have a significant influence on mechanical material properties [2], In a fire situation, steel material having a high thermal conductivity is vulnerable due to the loss of its mechanical properties [3,4], Therefore, a fire safety must be ensured as one of the important requirements that a building has to include according to contemporary technical rules on structural engineering [5], To study the collapse of structures under elevated temperatures, most research has been done on unprotected hot-rolled structural elements [6][7][8][9][10] or protected structural elements [11][12][13], The structural behaviour of CFS structures under fire is complex and requires substantial, dedicated research on isolated element frames as well as on complete walls and panels. Some studies have proposed various parameters that have a significant influence on the behavior of LSF walls in terms of improving fire resistance by incorporating some protective materials [14], Different single or double layers of wallboard can be used on both sides of the LSF wall, such as plasterboard, magnesium oxide board (MGO) and Cork [15][16][17][18][19], Furthermore, using rockwool and glass fiber to form a new composite innovative panel, cavity insulation, or external insulation sandwiched between two layers of protection wallboards, could be achieved [20,21], Previous research has been conducted to investigate the thermal performance of LSF walls when subjected to fire, including experimental studies and numerical simulation.…”
Section: Introductionmentioning
confidence: 99%