Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Material Behavior Characteristics for Reinforced Concrete Shells Stressed Beyond the Elastic Range
General forms of constitutive relations of elastic-plastic shells have been developed although only isotropic relations were used in numerical calculations. However, all these procedures are inapplicable to reinforced concrete structures which exhibit different strength characteristics in tension and compression as well as the unstable cracking phenomenon. In this study equations are developed to simulate the actual behavior of reinforced concrete and, in particular, to take into account effects due to cracking and plastic deformations. Biaxial state of stress is considered for a material composed of concrete and steel bars. Steel is assumed to have elastic perfectly plastic properties. For the concrete a cracking criterion based on the octahedral shearing stress theory is employed and in biaxial compression a similar yield criterion is chosen. The composite concrete-steel material has anisotropic properties due to the presence of the steel bars, especially, after the formation of cracks. The stress-strain relations will subsequently be used in finite element or lumped parameter analyses of reinforced concrete plates and shells. (Author)
Material Behavior Characteristics for Reinforced Concrete Shells Stressed Beyond the Elastic Range
General forms of constitutive relations of elastic-plastic shells have been developed although only isotropic relations were used in numerical calculations. However, all these procedures are inapplicable to reinforced concrete structures which exhibit different strength characteristics in tension and compression as well as the unstable cracking phenomenon. In this study equations are developed to simulate the actual behavior of reinforced concrete and, in particular, to take into account effects due to cracking and plastic deformations. Biaxial state of stress is considered for a material composed of concrete and steel bars. Steel is assumed to have elastic perfectly plastic properties. For the concrete a cracking criterion based on the octahedral shearing stress theory is employed and in biaxial compression a similar yield criterion is chosen. The composite concrete-steel material has anisotropic properties due to the presence of the steel bars, especially, after the formation of cracks. The stress-strain relations will subsequently be used in finite element or lumped parameter analyses of reinforced concrete plates and shells. (Author)
Material Behavior Characteristics for Reinforced Concrete Shells Stressed Beyond the Elastic Range
M. J. Mikkola (Autor:in) / W. C. Schnobrich (Autor:in)
1970
46 pages
Report
Keine Angabe
Englisch
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