AdSec API Glossary
Profile
Profile Coordinate System
A profile has a coordinate system. The position of the origin depends on the shape of the profile. Profile rotation rotates its local coordinate system about its origin.
Catalogue Profile
Catalogue profile can be created by a unique string description. Valid strings can be found using the section profile helper dialog within the AdSec application. e.g. "CAT ISMB ISMB350"
Perimeter Profile
Perimeter profile can be used to create any polygonal shaped profile. Its geometry is defined by a solid polygon. It can also have voids within its solid geometry which are defined by void polygons.
Section
A section is comprised of a material and a profile. A section with concrete as its material can also have reinforcement. Reinforcement is defined in the Profile Coordinate System.
Section Coordinate System
A section has a coordinate system. The origin for a section's coordinate system is located at its elastic centroid. The elastic centroid for a section is the centroid of all the components combined. It assumes all the components are made of the same homogeneous material for the centroid calculation. Reinforcement is not accounted for the centroid calculation.
Sub-Component
A section can also contain several other sections, also called sub-components. A sub-component is a section with an offset. A sub-component offset translates its profile in its containing section's Profile Coordinate System. Sub-component sections' profile rotates with its containing section's profile rotation.
- In a compound section sub-components are added in the order that they are defined.
- When components overlap, the material from any underlying components is removed to avoid double counting the material's contribution. Reinforcement is never removed.
Reinforcement
A section reinforcement can be defined by different types of reinforcement groups e.g. Line group, Circle group, SingleBars etc.. Reinforcement is defined only for concrete sections.
Cover
The cover determines the zone near the faces of the section profile that should not contain any reinforcement.
Bar
The term 'bar' is used as a general term to represent a reinforcement bar, tendon or other reinforcing material.
Bar Bundle
A bar bundle is defined by bar diameter, material and number of bars in the bundle. It can have one to four reinforcement bars.
Layer
A layer of reinforcement is a collection of Bar Bundles. It is defined by specifying either the Bar Bundle count or the spacing between the Bar Bundle centres.
Group
A group defines layout of the reinforcement. e.g. a Circle reinforcement group places the Bar Bundles within its Layer along a circle defined by a centre and a radius, a single bars group places Bar Bundles at specified positions.
Preload
A preload can be applied for a Group of reinforcement. Types of preload are:
Material
Stress-Strain Curve
A stress-strain relationship. It defines a part of a Tension-Compression curve. The stress-strain points in a Stress-Strain Curve are always positive.
Tension-Compression Curve
A tension-compression curve is defined by two Stress-Strain Curves, one for defining the compression part and other for the tension part.
User Defined Material
A user-defined material is created with a Strength and a Serviceability Tension-Compression Curve.
Strength curve: Material's stress-strain relationship for Strength limit state.
Serviceability curve: Material's stress-strain relationship for Serviceability limit state.
Explicit Stress-Strain Curve
A type of stress-strain curve created from a list of stress-strain points. For creating a valid explicit curve,
- The first point in the list must be a zero stress and zero strain point
- The list must contain points in the ascending order of the strains
- The list must atleast have two stress-strain points
Load
A Load consists of three components: axial force (X), bending moment about the Y axis (YY) and bending moment about the Z axis (ZZ). Loads are defined in the Section Coordinate System.
Deformation
Deformation consists of three components: axial strain (X), curvature about the Y axis (YY) and curvature about the Z axis (ZZ). Deformations are defined in the Section Coordinate System. Curvature about Y axis is caused by a bending moment applied about Y axis.
Results
Solution
It is the analysis result of a section for a given design code. Strength and Serviceability results for an applied Load / Deformation can be extracted from the solution.
Coordinate System for Results
The analysis results follow the Section Coordinate System.
Strength Result
Load Utilisation
The ratio of the applied load to the load in the same direction that would cause the section to reach its capacity.
Deformation Utilisation
The ratio of the applied deformation to the deformation in the same direction that would cause the section to reach its capacity.
Triangle Face
A face formed by three vertex indices. A list of vertices that the indices refer to are typically provided along with the faces e.g. a triangle face of a Load Surface has indices that refer to three different points, each point being a Load.
Load Surface
A load surface represents a 3D chart. It is formed by a collection of Traingle Faces.
Load Curve
A load curve represents a 2D chart. Force-Moment interaction chart for a given moment angle and Moment-Moment interaction chart for a given axial load can be extracted from a Load Surface.
Serviceability Result
Crack
A Crack object contains details of a theoritical crack at a position on a section.
Cracking Utilisation
The ratio of the applied load (or deformation) to the cracking load (or deformation) in the same direction. Cracking load is a load that causes the section to crack.
Stiffness
Stiffness consists of three components i.e. axial stiffness along X axis, bending stiffness about YY axis and ZZ axis in Section Coordinate System.
Moment Ranges
Moment ranges represent ranges of moments (in the direction of the applied moment and constant axial force) within which a given criteria is satisfied. For example, a Strength Result object has moment ranges which represent the range of moments that are within the section's strength capacity. The moment ranges in this case can be used to calculate a constant-axial utilisation (or 'M/Mu' ratio).
Section Analysis Theory
The theory behind section analysis using AdSec is described in Oasys AdSec Theory.
It describes serviceability (SLS) and strength (ULS) analysis, crack width calculation and the various material models for concrete, reinforcement, FRP and steel.
AdSec Documentation
The AdSec manual, training videos etc are available on the AdSec Support page.