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\\ The [Section Designer|kb:Section Designer] automatically generates *concrete stress-strain curves*. By default, these curves do not provide tensile strength. Stress-strain curves may be reviewed within the Section Designer by using the concrete-model View controls. To model the tensile strength of concrete, a material stress-strain curve may be converted into a user-defined constitutive model by selecting Define > Materials. A separate material must be created for each Mander confinement state. Then the Section Designer will apply this user-defined curve. For parametric Mander material, an option which is not user-defined, stress-strain curves are automatically computed, though tensile strength is not recognized. h2. How can I adjust the shear stress-strain curve? *Extended Question:* I have defined the [nonlinear|kb:Nonlinear] constitutive relationships for an isotropic concrete material. How do I set a specific maximum shear-stress capacity? *Answer:* For response, please refer to the {new-tab-link:http://www.csiberkeley.com/}CSI{new-tab-link} [_Analysis Reference Manual_|doc:CSI Analysis Reference Manual] (Nonlinear Material Behavior > Shear, page 82). Further, a [layered shell|kb:Layered shellshells] object may be created in which individual layers represent pure shear and pure axial behaviors. Different material properties may be assigned to each layer and its local mechanical behavior. {hidden-content} *Related Incident:* * {incident:no=46485|comment=Inquiry on shear stress-strain curve for concrete} {hidden-content} |
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