CSI SAP2000 version 21.0.2 | 658.9 mb
Computers and Structures, Inc. (CSI) is pleased to announce the availability of SAP2000 version 21.0.2. Exciting new enhancements have been implemented in SAP2000 v21 related to Loading, Analysis and Design.

   
        Loading
Enhancements Implemented
228776     An enhancement was implemented to improve the speed of tendon load generation during creation of the analysis model
Analysis
Enhancements Implemented
229428     Convergence behavior of the tension-compression friction-pendulum isolatorlink element has been improved, particularly to deal with large variations in the axial force, which can cause alternating slip-stick behavior during lateral loading. Models that exhibited slow convergence behavior in previous versions should be re-run in the new version to verify the results. The new results will be more accurate in cases where a significant difference is observed between the old and new results. Furthermore, the friction model has been changed from the previous Wen formulation that exhibited a gradual transition between sticking and slipping to a bilinear model that exhibits a sudden transition. Some difference in results can be expected due to the new formulation, particularly for models where the initial stiffness specified for the isolator was small. Similar changes were made to the formulations of the friction-pendulum and triple-pendulum isolator link elements in previous releases of the software. Finally, the new formulation supports event stepping, which can be used as part of the iteration and stepping strategy specified for nonlinear static, staged-construction, and nonlinear direct-integration time-history load cases.
229433     Nonlinear static analysis, including staged-construction, has been enhanced to allow the useof line search and event-stepping at the same time. Previously only one of these two options could be used for a given load case, and event-stepping took precedence. Now, when both options are selected, event stepping will be used for the first iteration, and line search will be used for subsequent iterations. By default, events and iteration without line search will be enabled for newly created load cases, which is equivalent to the previous behavior. When opening existing models from a previous version, load cases that had both options enabled will have the line search turned off to reproduce the previous behavior. Note that line search is never used for load cases that use event-stepping only, i.e., that have iteration turned off. Note also that line search is never used for nonlinear static load cases under displacement control, only for load cases under force control. Staged construction load cases always use force control.
Installation and Licensing
Enhancements Implemented
229291     Theversion number has been changed to v21.0.2for a new minorversion release.
Frame Design
Incidents Resolved
225176 228049 228867 229047 229113      An incident was resolved where steel sections that are not from a steel sections database, but are created by providing dimensions in the new sections form or modified there may have their shape identified incorrectly for steel frame design. This may result in unconservative demand capacity ratios. This only affects frame sections that were added or modified in v20.2.0, v21.0.0, or v21.0.1. Analysis results are not affected. Older models that did not add any new sections or modified existing ones are not affected.
228884     An incident was resolved in which auto-select section assignments to frames were being replaced by the last analysis section when the model was opened. This affected v21.0.0 and v21.0.1. This had the effect of not further optimizing steel sections, no other results were affected.
Database Tables
Incidents Resolved
229352     An incident was resolved where certain edits to hinge definition tables were not being accepted. Specifically, (1) In table "Hinge Def 08", any changes made to RCRatio were not reflected in the tables or hinge definition forms. The values would revert back to the original values. (2) In table "Hinge Def 11" the IntType value was unable to be set to "Steel: ASCE 41-13".
Results Display and Output
Incidents Resolved
22917 222918     6An incident was resolved where an abnormal termination error sometimes occurred after analysis was completed but before the results were fully saved. When this occurred, the model became unlocked and results were lost. This error was intermittent on machines that were affected   
About SAP2000.    The SAP name has been synonymous with state-of-the-art analytical methods since its introduction over 30 years ago. SAP2000 follows in the same tradition featuring a very sophisticated, intuitive and versatile user interface powered by an unmatched analysis engine and design tools for engineers working on transportation, industrial, public works, sports, and other facilities.
From its 3D object based graphical modeling environment to the wide variety of analysis and design options completely integrated across one powerful user interface, SAP2000 has proven to be the most integrated, productive and practical general purpose structural program on the market today. This intuitive interface allows you to create structural models rapidly and intuitively without long learning curve delays. Now you can harness the power of SAP2000 for all of your analysis and design tasks, including small day-to-day problems.
Complex Models can be generated and meshed with powerful built in templates. Integrated design code features can automatically generate wind, wave, bridge, and seismic loads with comprehensive automatic steel and concrete design code checks per US, Canadian and international design standards.
Advanced analytical techniques allow for step-by-step large deformation analysis, Eigen and Ritz analyses based on stiffness of nonlinear cases, catenary cable analysis, material nonlinear analysis with fiber hinges, multi-layered nonlinear shell element, buckling analysis, progressive collapse analysis, energy methods for drift control, velocity-dependent dampers, base isolators, support plasticity and nonlinear segmental construction analysis. Nonlinear analyses can be static and/or time history, with options for FNA nonlinear time history dynamic analysis and direct integration.
From a simple small 2D static frame analysis to a large complex 3D nonlinear dynamic analysis,  SAP2000 is the easiest, most productive solution for your structural analysis and design needs.
   
       
       
                   
   
   
About Computers and Structures, Inc    Founded in 1975, Computers and Structures, Inc. (CSI) is recognized globally as the pioneering leader in software tools for structural and earthquake engineering. Software from CSI is used by thousands of engineering firms in over 160 countries for the design of major projects, including the Taipei 101 Tower in Taiwan, One World Trade Center in New York, the 2008 Olympics Birds Nest Stadium in Beijing and the cable-stayed Centenario Bridge over the Panama Canal. CSI's software is backed by more than three decades of research and development, making it the trusted choice of sophisticated design professionals everywhere.
Product: CSI SAP2000
Version: 21.0.2
Supported Architectures: x64
Website Home Page :

www.csiamerica.com

Language: english
System Requirements: PC
Supported Operating Systems: Windows 7even or newer
Size: 658.9 mb

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