Useful Tools for Fast Generation of Structures
Cross-Section and Material Libraries Including Favorites
Discover the extensive cross-section and material libraries. They facilitate you the modeling of plate and beam structures. You can filter these databases and expand them with user-defined entries. You can also easily import and analyze special cross-sections from RSECTION.
Easy Creation of Views and Visibilities
A clear display is a prerequisite for your efficient and fast work with the program. Select user-defined views from different angles to facilitate the result evaluation. Using "visibilities", you can also divide the model into user-defined and generated partial views that fulfill certain criteria. It is thus possible, for example, to activate only the surfaces of a specific material or members with a particular cross-section for the display.
Easy Model Input
There are many options available for simple input and modeling. Your model is entered as a 1D, 2D, or 3D model. Member types such as beams, trusses, or tension members make it easier for you to define member properties. In order to model surfaces, RFEM provides you with various types, such as Standard, Without Thickness, Rigid, Membrane, and Load Distribution.
Furthermore, RFEM covers various material models, such as Isotropic | Linear Elastic, Orthotropic | Linear Elastic (Surfaces, Solids), or Isotropic | Timber | Linear Elastic (Members).
Member and Support Nonlinearities
If you are working with nonlinearities, this feature is suited very well to support you. For example, you can specify nonlinearities of member end releases (yielding, tearing, slippage, and so on) and supports (including friction). Furthermore, you can use special dialog boxes to determine the spring stiffnesses of columns and walls based on the geometry specifications.
Variable Member and Surface Properties
Planning with members is also facilitated in the programs due to specific features. You can arrange members eccentrically, support them by elastic foundations, or define them as rigid links. Member sets allow you to easily apply the load on several members.
In RFEM, you can also define eccentricities of surfaces. Here, you can transform nodal and linear loads into surface loads. If necessary, divide surfaces into surface components and members into surfaces.
Generation of Wind and Snow Loads According to Eurocode
Do you want your structures to remain upright even in wind and snow? Then rely on the load wizards for plate and frame structures. You can now generate wind loads according to EN 1991‑1‑4 and snow loads according to EN 1991‑1‑3 (as well as other international standards). The load cases are generated depending on the roof shape.
Optional Automatic Renumbering of Objects
This feature helps you stay flexible in your planning. You can subsequently adjust the numbering of structural objects, such as nodes and members. In this case, it is possible to renumber the objects automatically in accordance with the selected priorities (axis directions).
Simple Model Check
Always keep track of your model. The model check quickly detects for you the input errors, such as overlapping members or identical nodes. You can automatically connect intersecting members during your input. Members can also be extended or divided graphically. The measure function allows you to determine lengths and angles of members and surfaces (only RFEM).
Various Load Types
If you work with loads, find a selection of useful features here. Various load types are available to you for member and surface loads (force, moment, temperature, precamber, and so on). You can assign mmber loads to members, member sets, and member lists. In the case of imperfections, inclination and precamber can be determined precisely according to the Eurocode, the American standard ANSI/AISC 360, the Canadian standard CSA S16, and so on.
Node, Line, and Surface Releases
You probably already know that node, line, and surface releases are used to define transfer conditions between objects. For example, you can release members, surfaces, and solids from a line. It is also easily possible for the releases to have nonlinear properties, such as "Fixed if positive n", "Fixed if negative n", and so on.
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The coefficient θ is calculated as follows:$$\mathrm\theta\;=\;\frac{\displaystyle{\mathrm P}_\mathrm{tot}\;\cdot\;{\mathrm d}_\mathrm r}{{\mathrm V}_\mathrm{tot}\;\cdot\;\mathrm h}\;$$
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You can use the "Dashpot" member type to define a damping coefficient, a spring constant, and a mass. This type of member expands the possibilities within the time history analysis.
With regard to viscoelasticity, the member type "Dashpot" is similar to the Kelvin-Voigt model, which consists of the damping element and an elastic spring (both connected in parallel).
For calculation diagrams, the "2D | Hinge" is available. These hinge diagrams show the hinge response of load situations for nonlinear hinges.
For calculations with several load situations, such as is the case with pushover analyzes and time history analysis, you can evaluate the state of the hinge in each load step.
For line support results, you can optionally display certain additional information in info bubbles, such as description, sum, mean value, and so on.
If necessary, you can activate the info bubbles in the Navigator – Results.