Triangular Section

@SHAPE_BUILDER_ANALYSIS {
@SHAPE_BUILDER_NAME {TrigName} {
@SHAPE_GROUP {SOLID}
@SHAPE_TYPE {TRIANGULAR_SECTION}
@DIMENSIONS {
@DIMENSION_01 {w}
@DIMENSION_02 {θ}
@DIMENSION_03 {h}
}
@MATERIALS {
@MATERIAL_01 {Mat1}
}
@IS_DEFINED_IN_FRAME {FrameName}
@MESH_DENSITY {md}
@COMMENTS {CommentText}
}
}

Notes

  • ShapeBuilder can generate beam cross-sections in the shape of a triangular section, To define a triangular section, use the following parameters.
    1. @SHAPE_GROUP: SOLID, and
    2. @SHAPE_TYPE: TRIANGULAR_SECTION.
  • The base section is a solid triangular section, as illustrated in fig. 1. No options are available for this shape.
  • Sectional shapes are defined in their own local coordinate system, which is assumed to coincide with the global coordinate system. If a fixed frame, FrameName, is specified, the local coordinate system coincides with this fixed frame.
  • The mesh density parameter, md, determines the level of mesh refinement. (Default: md = 4)
  • It is possible to attach comments to the definition of the object; these comments have no effect on its definition.

The triangular section: base configuration

Figure 1. The base configuration for the triangular section.
  • Fig.1 illustrates the base configuration of the triangular section.
  • The geometric configuration of the triangular section if defined by the dimensions listed in table 1, which are also indicated in fig. 1. Dimensions labeled in red are required. Dimensions labeled in blue are optional and are assigned the default value indicated in table 1.
Component Dimension Symbol Default Nb.
section width w required 01
section angle θ required 02
section height h w/2 tan θ 03
Table 1. Dimensions defining the geometry
of the triangular section.
  • Zone 1 of the triangular section is defined as follows.
    • It comprises the following face: Core.
    • It is associated with material Mat1 , which can refer to material properties.