Namespace Oasys.AdSec.Materials.StressStrainCurves

Interfaces

IBilinearStressStrainCurve

A type of IStressStrainCurve in which the stress is directly proportional to the strain until the yield point. The curve has a constant gradient between the yield and the failure points.

Stress Strain Yield point Failure strain Stress Strain Yield point Failure point

IExplicitStressStrainCurve

A type of IStressStrainCurve defined by a list of IStressStrainPoints.

See Glossary

Stress Strain (x1, y1) (x2, y2) (x3, y3) (x4, y4) (x, y)

IFibModelCodeStressStrainCurve

Schematic IStressStrainCurve from FIB model code. Refer AdSec Theory Manual for further details.

Stress Strain Peak point Failure strain Initial modulus

ILinearStressStrainCurve

A type of IStressStrainCurve in which the stress is directly proportional to the strain. The material provides no strength beyond the failure point.

Stress Strain Failure point

IManderConfinedStressStrainCurve

A type of IStressStrainCurve for a confined concrete IMaterial. Refer 'Mander J.B., Priestley M.J.N., and Park R. (1988). "Theoretical Stress-Strain Model for Confined Concrete", ASCE Journal of Structural Engineering, V. 114, No. 8, pp. 1804-1826' for further details.

Stress Strain Confined strength Failure strain Initial modulus Peak strain

IManderStressStrainCurve

A type of IStressStrainCurve for an unconfined concrete IMaterial. Refer 'Mander J.B., Priestley M.J.N., and Park R. (1988). "Theoretical Stress-Strain Model for Confined Concrete", ASCE Journal of Structural Engineering, V. 114, No. 8, pp. 1804-1826' for further details.

Stress Strain Peak point Failure strain Initial modulus 2 x Peak strain

IParabolaRectangleStressStrainCurve

A type of IStressStrainCurve which is initially parabolic. The stress is constant beyond the yield point. The material provides no strength beyond the failure point.

Stress Strain Yield point Failure strain

IParkStressStrainCurve

A type of IStressStrainCurve with a linear stress-strain relationship up to the yield point. The gradient of the curve is zero up to some point beyond the yield, and then the curve rises to reach the peak point. The point up to which the gradient of the curve is zero is calculated as:

stress = yield stress,
strain = yield strain * factor,
factor = 1, for yield stress > 120ksi,
= [-4 * (yield stress in ksi - 60) / 60 + 5], for yield stress between 60ksi and 120ksi,
= [-9 * (yield stress in ksi - 40) / 20 + 14], for yield stress between 40ksi and 60ksi,
= 14, for yield stress less than 40ksi.

Refer AdSec Theory Manual for further details.
Stress Strain Yield point Failure point

IPopovicsStressStrainCurve

A type of IStressStrainCurve based on the work of Popovics. It is defined by a series of curves adjusted on the basis of Thorenfeldt base curve. Refer AdSec Theory Manual for further details.

Stress Strain Peak point Failure strain

IRectangularStressStrainCurve

A type of IStressStrainCurve in which the stress is zero until the yield point. The stress is constant betweeen the yield point and the failure point.

Stress Strain Yield point Failure strain

IStressStrainCurve

A stress-strain curve. The stress-strain inputs must have positive and finite values. It can be used to define the tension or the compression part of an ITensionCompressionCurve.

See Glossary

IStressStrainPoint

A stress-strain point. It can be used as an input type to define a IStressStrainCurve.

ITensionCompressionCurve

A stress-strain relationship for a IMaterial.

See Glossary