26.5. Beam Assembly
Coordinate system of Beam Assembly
The beam segment has nodes and segment lines.
The segment line connects nodes with the graphic line.
The center marker of node is located at the point of node and its orientation is dependent on the direction used when the beam segment is created as shown in Figure 26.26.
If you apply the plus values in the initial velocity of beam segment, the beam segment moves into the plus direction of the x-axis of the center marker of each node.
Definition for direction of z-axis, as following:
The plus direction of the z-axis of an assembly is the plus direction of the z-axis of working plane.
All the z-axis of node is same in an assembly.
From the direction of z-axis and x-axis, the direction of y-axis is determined.
Moments of Area of Beam Assembly
Moments of Inertia
Flat Shape
\(I_{xx}=I_{yy}+I_{zz}\)\(I_{yy}=TD^3/12\)\(I_{zz}=/DT^3/12\)- where,
- \(I_{xx}\), \(I_{yy}\), and \(I_{zz}\) are the area moment of beam assembly.\(D\) is the depth of beam assembly. (In the default value, \(D\) is fixed with 100, independent of the units).\(T\) is the thickness of beam assembly.