Line Load
Glossary Term
In RFEM, forces and moments can be introduced into the model as line loads. They are usually entered as a force per unit length (for example, kip/ft), and it is also possible to define a concentrated line load of the line at any location. Furthermore, there is also the possibility to apply line loads varying over the length.
The line load can only be considered if the line is a part of a surface. Thus, the line load cannot be applied to a member lying outside a surface. For this, it is necessary to use a member load.
The line load in its effect can be related to the local or the global axis system. When using the local axis system, rotation of the line load is possible.
Entering in RFEM
Line loads can be entered and defined in RFEM and RSTAB graphically by clicking "Insert" → "Loads" → "Line Loads" → "Graphically" or the corresponding toolbar button, or by using tables.
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New
In RFEM 5 and RSTAB 8, it is possible to assign nonlinearities to member end releases. In addition to the nonlinearities ‘Fixed if’ and ‘Partial activity’, you can also select ‘Diagram’. If you select the ‘Diagram’ option, you have to specify the according settings for the activity of the member end release. For the individual definition points, it is necessary to specify the abscissa and ordinate values (deformations or rotations and the according internal forces) that define the release.
New
Increased Calculation Performance by Reducing the Nodal Degrees of Freedom
The number of degrees of freedom in a node is no longer a global calculation parameter in RFEM (6 degrees of freedom for each mesh node in 3D models, 7 degrees of freedom for the warping torsion analysis). Thus, each node is generally considered with a different number of degrees of freedom, which leads to a variable number of equations in the calculation.
This modification speeds up the calculation, especially for models where a significant reduction of the system could be achieved (e.g. trusses and membrane structures).
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Associated Products
Main Program
Structural engineering software for finite element analysis (FEA) of planar and spatial structural systems consisting of plates, walls, shells, members (beams), solids and contact elements
3,540.00 USD
