Shear walls and deep beams of a building model are available as independent objects in the design add-ons. This allows for faster filtering of the objects in results, as well as better documentation in the printout report.
The time history analysis is performed with the modal analysis or the linear implicit Newmark analysis. The time history analysis in this add-on is limited to linear structural systems. Although the modal analysis represents a fast algorithm, it is necessary to use a certain number of eigenvalues to ensure the required accuracy of results.
The implicit Newmark analysis is a very precise method, independent of the number of eigenvalues used, but requires sufficient small time steps for the calculation.
You can find the serviceability limit state design checks in the result tables of the Aluminum Design add-on. They are already fully integrated there. You have the option to display the design results with all the details at each location of the designed members. You can also use graphics with the result diagrams of the design ratios.
You can integrate all result tables and graphics into the global printout report of RFEM/RSTAB as a part of the aluminum design results. RFEM/RSTAB also allows you to display and document the deformations of the entire structure independently of the add-on.
When calculating the deflection limit, you have to consider certain reference lengths. You can define these reference lengths and the segments to be checked independently of each other, depending on the direction. For this, define design supports at the intermediate nodes of a member and assign them to the respective direction for the deformation analysis. Thus, the segments are created where you can define a precamber for each direction and segment.
The soil solids that you want to analyze are summarized in soil massifs.
Use the soil samples as a basis for a definition of the respective soil massif. This way, the program allows for user-friendly generation of the massif, including the automatic determination of the layer interfaces from the sample data, as well as the groundwater level and the boundary surface supports.
Soil massifs provide you with the option to specify a target FE mesh size independently of the global setting for the rest of the structure. You can thus consider the various requirements of the building and soil in the entire model.
Various design parameters of the cross-sections can be adjusted in the serviceability limit state configuration. The applied cross-section condition for the deformation and crack width analysis can be controlled there.
For this, the following settings can be activated:
Crack state calculated from associated load
Crack state determined as an envelope from all SLS design situations
Cracked state of cross-section - independent of load
You find the serviceability limit state design fully integrated in the result tables of the Timber Design add-on. If yuo want to check the design results, you can open the program and display the results with all the details at each location of the designed members. Furthermore, graphics are available for you with the result diagrams of the design ratios.
A special thing is that All result tables and graphics can be integrated into the global printout report of RFEM/RSTAB as a part of the timber design results. You can also display and document the deformations of the entire structure as a part of the RFEM/RSTAB functionality. This function is independent of the add-on.
You can find the serviceability limit state design checks in the result tables of the Steel Design add-on. You can display the design results with all the details at each location of the designed members. Furthermore, graphics are available for you with the result diagrams of the design ratios. This gives you a good overview.
You can also integrate all result tables and graphics into the global printout report of RFEM/RSTAB as a part of the steel design results. Thus, you can display and document the deformations of the entire structure as a part of the RFEM/RSTAB functionality independent of the add-on.
One thing is absolutely undisputed: WebService and API covers universal aspects in the construction industry. However, there is an issue. For the calculation and design, you need different features for each region, country, company, and civil engineer. Everyone has their own requirements. We have solved this problem. Since with WebService and API, you can easily create your very own calculation and design system. Always at your side: The performance and reliability of RFEM, RSTAB, and RSECTION.
The need for adapted and automated structural analysis and design is constantly increasing. WebService technology allows you to create special functionalities quickly and precisely. Our customers can develop such solutions independently or in cooperation with us. See for yourself and give it a try!
Communication is the key to success. This also applies to a client-server relation. WebService and API provides you with an XML based information exchange system for direct client-server communication. Programs, objects, messages, or documents can be integrated into these systems. For example, a web service protocol of the HTTP type runs for the client-server communication when you are looking for something in the Internet using a search engine.
Now back to Dlubal Software. In our case, the client is your programming environment (.NET, Python, JavaScript) and the service provider is RFEM 6. Client-server communication allows you to send requests to and receive feedback from RFEM, RSTAB, or RSECTION.
What is the difference between WebService and an API?
WebService is a collection of open source protocols and standards used to exchange data between systems and applications. In contrast, an application programming interface (API), is a software interface through which two applications can interact without a user being involved.
Thus, all web services are APIs, but not all APIs are web services.
What are the advantages of the WebService technology? You can communicate more quickly within and between organizations.A service can be independent of other services.Webservice allows you to use your application to make your message or feature available to the rest of the world.Webservice helps you to exchange data between different applications and platforms Several applications can communicate, exchange data, and share services with each other. SOAP ensures that programs created on different platforms and based on different programming languages can exchange data securely.
Communication between the web service client and server is optionally encrypted via the https protocol. To do this, you can install an SSL certificate with the corresponding private key in the settings.
The following new features are available for your work with surfaces: When creating surface intersections, independent surface components are now created for you instead of surface components.
Do you want to perform the bending failure design? To do this, analyze the governing locations of the column for axial forces and moments. For the shear resistance design, you can also consider the locations with extreme values of shear forces. During the calculation, you determine whether a standard design is sufficient or whether the column with the moments has to be designed according to the second-order theory. You can then determine these moments using the previously entered specifications. The calculation is divided into three parts:
Load-independent calculation steps
Iterative determination of governing loading taking into account a varying required reinforcement
Safety determination of all acting internal forces, including the designed reinforcement
After a successful calculation, the results are displayed in clearly arranged tables. Each intermediate value is absolutely traceable, making the design checks transparent.
User-defined time diagrams as a function of time, in tabular form, or as harmonic loads
Combination of the time diagrams with RFEM/RSTAB load cases or combinations (enables definition of nodal, member, and surface loads, as well as free and generated loads varying over time)
Combination of several independent excitation functions
Nonlinear time history analysis with the implicit Newmark analysis (RFEM only) or the explicit analysis
Structural damping using Rayleigh damping coefficients or Lehr's damping
Direct import of initial deformations from a load case or combination (RFEM only)
Stiffness modifications as initial conditions; for example, axial force effect, deactivated members (RSTAB only)
Graphical display of results in a time history diagram
Export of results in user-defined time steps or as an envelope
For the bending failure design, the governing locations of the column are analyzed for axial force and moments. In addition, locations with extreme values of shear forces are considered for the shear resistance design. During the calculation, it is determined whether a standard design is sufficient or whether the column with the moments has to be designed according to the second-order theory. These moments are then determined based on the previously entered specifications. The calculation has four parts:
Load-independent calculation steps
Iterative determination of governing loading taking into account a varying required reinforcement
Determination of the designed reinforcement for governing internal forces
Safety determination of all acting internal forces, including the designed reinforcement
In this way, RF-/CONCRETE Columns provides a complete solution of an optimized reinforcement concept and the resulting load actions.
It is possible to calculate independent substructures. The development of the deformation is displayed in a diagram during the calculation. This way, you can easily evaluate the convergence behavior.
The global calculation assigns the stiffness determined by means of the selected composition and the glass geometry to each surface. Then, the calculation proceeds using the plate theory. It is possible to select whether the shear coupling of layers should be considered.
In the case of the local calculation, you can further specify 2D or 3D calculation. Two-dimensional calculation means that the single-layer or laminated glass is modeled as a surface, whose thickness is calculated on the basis of the selected structure and glass geometry (using the plate theory). Similarly to the global calculation, you can optionally consider shear coupling of layers.
The 3D calculation uses solids in the model to substitute each composition layer. This way, the results are more accurate, but the calculation may take more time.
It is possible to model insulating glass only if local calculation is selected. The gas layer is always modeled as a solid element, so it is necessary to design individual insulating glass parts independently of the surrounding structure. The ideal gas law (thermal equation of state of ideal gases) is considered for the calculation and the third-order analysis.
The time history analysis is performed with the modal analysis or the linear implicit Newmark analysis. The time history analysis in this add‑on module is restricted to linear systems. Although the modal analysis represents a fast algorithm, it is necessary to use a certain number of eigenvalues to ensure the required accuracy of results.
The implicit Newmark analysis is a very precise method, independent of the number of eigenvalues used, but requires sufficient small time steps for calculation. For the response spectra analysis, equivalent static loads are calculated internally. A linear static analysis is performed subsequently.
Combination of user-defined time diagrams with load cases or load combinations (nodal, member, and surface loads, as well as free and generated loads, can be combined with time-variable functions)
Combination of several independent excitation functions
Extensive library of seismic events (accelerograms)
Linear implicit Newmark analysis or modal analysis in time history
Structural damping using Rayleigh damping coefficients or Lehr's damping
Direct import of initial deformations from a load case or combination
Graphical display of results in a time history diagram
Export of results in user-defined time steps or as an envelope
There are various options available for beam modeling. Graphical representations facilitate the geometry input. Modifications are updated automatically. Deflection of cantilevers can be set in the serviceability limit state design, independently of the deflection in the span.
In order to enter permanent loads (for example, roof structure), you can use a comprehensive and extensible material library. Generators integrated in RX-TIMBER Purlin allow for convenient generation of various wind and snow load cases.
Load cases are displayed graphically and superimposed in automatically generated load combinations according to EC 5. This way, the required input data are reduced to a minimum. However, you can enter load specifications manually as well.
There are various options available for beam modeling. Graphical representations facilitate the geometry input. Modifications are updated automatically. Deflection of cantilevers can be set in the serviceability limit state design, independently of the deflection in the span.
The relevant timber grade of the material can be selected from the material library. All material grades specified in EN 1995-1-1: 2004 (EC 5) or DIN 1052:2008-12 and the selected National Annex are available for glulam, hardwood, and softwood timber. Furthermore, it is possible to generate a strength class with user-defined material properties in order to extend the library. Permanent loads (for example, roof structure) can also be entered using the comprehensive and extensible material library.
Generators integrated in RX-TIMBER Purlin allow for convenient generation of various wind and snow load cases. Load cases are displayed graphically and superimposed in automatically generated load combinations according to EN 1990, DIN 1055-100, or DIN 1052. This way, the required input data are reduced to a minimum. However, you can enter load specifications manually as well.
The Initial Graphics Exchange Specification (IGES) defines a neutral, highly independent data format, which is used to exchange digital information among Computer Aided Design (CAD) programs.