Solutions for Stress Analysis
Recommended Products for Stress Analysis
Construction Stages
The Construction Stages Analysis (CSA) add-on allows for considering the construction process of structures (member, surface, and solid structures) in RFEM.
Time-Dependent Analysis (TDA)
The Time-Dependent Analysis (TDA) add-on allows you to consider the time-dependent material behavior of members. The long-term effects, such as creep, shrinkage, and aging, can influence the distribution of internal forces, depending on the structure.
Lateral-torsional buckling with warping torsion
The Torsional Warping (7 DOF) add-on allows you to consider cross-section warping as an additional degree of freedom.
Geotechnical Analysis
In RFEM, the Geotechnical Analysis add-on uses properties from soil samples to determine the soil body to be analyzed. The accurate determination of soil conditions significantly affects the quality of the structural analysis of buildings.
Response Spectrum Analysis
The Response Spectrum Analysis add-on performs seismic analysis using multi-modal response spectrum analysis. The spectra required for this can be created in compliance with the standards or can be user-defined. The equivalent static forces are generated from them. The add-on includes an extensive library of accelerograms from seismic zones that can be used to generate the response spectra.
Optimization of Model Parameters
The add-on uses particle swarm optimization (PSO) to determine optimal parameters for parameterized models based on weight, cost, or CO2 emissions.
Definition of Multilayer Surfaces, such as Laminate Surfaces or Cross-Laminated Timber (CLT)
The Multilayer Surfaces add-on allows you to define multilayer surface structures. The calculation can be carried out with or without the shear coupling.
Support and Learning
We provide professional support and many services in order to help you with finding a quick and efficient solution for your projects.
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- Response spectra in accordance with different standards
- The following standards are implemented:
- EN 1998-1:2010 + A1:2013 (European Union)
- DIN 4149:1981-04 (Germany)
- DIN 4149:2005-04 (Germany)
- IBC 2000 (USA)
- IBC 2009-ASCE/SEI 7-05 (USA)
- IBC 2012/15 - ASCE/SEI 7-10 (USA)
- IBC 2018 - ASCE/SEI 7-16 (USA)
- ÖNORM B 4015:2007-02 (Austria)
- NTC 2018 (Italy)
- NCSE-02 (Spain)
- SIA 261/1:2003 (Switzerland)
- SIA 261/1:2014 (Switzerland)
- SIA 261/1: 2020 (Switzerland)
- O.G. 23089 + OG 23390 (Turkey)
- SANS 10160-4 2010 (South Africa)
- SBC 301:2007 (Saudi Arabia)
- GB 50011 - 2001 (China)
- GB 50011 - 2010 (China)
- NBC 2015 (Canada)
- DTR BC 2-48 (Algeria)
- DTR RPA99 (Algeria)
- CFE Sismo 08 (Mexico)
- CIRSOC 103 (Argentina)
- NSR - 10 (Colombia)
- IS 1893:2002 (India)
- AS1170.4 (Australia)
- NCh 433 1996 (Chile)
- The following National Annexes according to EN 1998‑1 are available:
- DIN EN 1998-1/NA:2011-01 (Germany)
- ÖNORM EN 1991-1-1:2011-09 (Austria)
- NBN - ENV 1998-1-1: 2002 NAD-E/N/F (Belgium)
- ČSN EN 1998-1/NA:2007 (Czech Republic)
- NF EN 1998-1-1/NA:2014-09 (France)
- UNI-EN 1991-1-1/NA:2007 (Italy)
- NP EN 1998-1/NA:2009 (Portugal)
- SR EN 1998-1/NA:2004 (Romania)
- STN EN 1998-1/NA:2008 (Slovakia)
- SIST EN 1998-1:2005/A101:2006 (Slovenia)
- CYS EN 1998-1/NA:2004 (Cyprus)
- NA to BS EN 1998-1:2004:2008 (United Kingdom)
- NS-EN 1998-1:2004 + A1:2013/NA:2014 (Norway)
- User-defined response spectra
- Direction-relative response spectrum approach
- Relevant mode shapes for the response spectrum can be selected manually or automatically (5% rule from EC 8 can be applied)
- Generated equivalent static loads are exported to load cases, separately for each modal contribution and separately for each direction
- Result combinations by modal superposition (SRSS and CQC rule) and direction superposition (SRSS or 100% / 30% rule)
- Signed results based on the dominant eigenmode can be displayed
Equivalent static loads are generated separately for each relevant eigenvalue and excitation direction. They are exported to static load cases to perform the linear static analysis in RFEM/RSTAB.
The equivalent load analysis calculation generates load cases and result combinations. The load cases include the generated equivalent loads, which are subsequently superimposed in result combinations. First, the modal contributions are superimposed with the SRSS or CQC rule. Signed results based on the dominant mode shape are possible.
Afterwards, the directional components of earthquake actions are combined with the SRSS or the 100% / 30% rule.
The input parameters relevant for the selected standards are suggested by the program in accordance with the rules. Furthermore, it is possible to enter response spectra manually. Dynamic load cases define a direction of response spectra effects and the structure eigenvalues that are relevant for the analysis.