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Versions 19.0 and newer of ETABS allow the Exporting of ETABS models into Perform3D models.
When performing an export from ETABS, you have the following choices:
Information about export of Perform3D model from ETABS can be broken into the following main sections:
Perform3D Model Units
Program select units based on ETABS current database Force and Length Units. Value of gravitation acceleration is calculated based on these two units.
ETABS | Perform3D | ETABS | Perform3D |
in | in | kgf | kgf |
ft | ft | kip | kip |
micron | NOT SUPPORTED | kN | kN |
mm | mm | lbs | lbs |
cm | cm | N | N |
m | m | Mgf | Mgf |
An example of how the export report file documents the units translation is shown below:
1 - Perform3D Model Units Force Unit = kN Length Unit = mm g = 9814.6 mm/s^2 |
Reading ETABS Model
The export routine reads the ETABS model to convert the it into an equivalent Perform3D Data as described in the.
An example of how the export report file documents the translation of the Materials, Frame Sections, Shell Properties, Joints, Constraints, and Frame Releases (sections 2a through 2g) are shown below:
2 - Reading ETABS Model Total Concrete Materials = 12 Total Steel Materials = 2 Total Rebar Materials = 2 Total Materials = 8 b) Frame Sections Total Frame Sections = 5 c) Shell Properties Total Shell Properties = 19 d) Joints Total Nodes = 127 Nodes are sorted w.r.t Z, Y and X coordinates. e) Constraints Total Constraints = 51 f) Frames Total Frames = 3495 g) Frame Releases Total Frames haves Releases = 1089 Total Frames Releases = 2030 |
h) Shells
The export routine reads the Area Objects and checks to see if they cam be exported to Perform3D.
Perform3D only allows quadrilateral area objects and has strict checks for element shape and connectivity. All triangular area objects are meshed into three equivalent quads. The program documents the warnings and errors about export of shells as shown in the following example of the export report file:
SHAPE WARNING - Area creation warning for nodes 273C,273-12,2051and 273-31. SHAPE ERROR - Area creation Error for nodes 273C,273-23,3459and 273-12. h) Shells Total 4-Noded Shells Object = 3679 Total 4-Noded Shells Object = 64 ** Triangle Shell Objects (64) are present in model. ** |
When the report file issues a "SHAPE WARNING" message (as shown above) it means that the area object was exported. However, when the report file issues a "SHAPE ERROR" it means that area object was not not Exported into Perform3D.
An example of how the export report file documents the translation of the Load Patterns, Joint Loads, Frame Distributed Loads, Frame Point Loads, Check Frame Points, Shell Loads, Shell Point Loads, Frame Sections, Shell Sections, Sections in Frames, Section in Shells, Frame Type, Shell Orientation, and Mass Source (Sections 2i through 2v) is shown below:
i) Load Patterns Total Load Patterns = 6 j) Joint Loads Total Nodal Loads = 277 k) Frame Distributed Loads Total Frame Distributed Loads = 0 l) Frame Point Loads Total Frame Point Loads = 0 m) Check Frame Points n) Shell Loads Total Shell Loads = 0 o) Shell Point Loads Total Shell Point Loads = 0 p) Frame Sections q) Shell Sections r) Section in Frames s) Section in Shells t) Frame Type Total Concrete Frames (Beams) = 2751 Total Concrete Frames (Columns) = 616 Total Steel Frames = 0 Total Other Frames = 0 u) Shell Orientation v) Mass Source Total Mass-X = 74.674898969553 kN/mm-s^2 Total Mass-Y = 74.674898969553 kN/mm-s^2 Total Mass-Z = 74.6748989695533 kN/mm-s^2 w) Time History Total Time History Functions = 8 x) Load Patterns Checks Total Load Patterns Empty = 5 y) Merging Diaphragms z) Drift Nodes aa) Frame Hinges Total Frame Hinges = 0 ab) Embeded Beams Total Areas Connected to Embedded Beams = 878 |
Perform3D Model Initialize
3 - Perform3D Model Intialize Control variables ... OK Frame data ... OK Node data ... OK Element data ... OK Nodel Load patterns ... OK Element Load patterns ... OK Self-Weight Load patterns ... OK Structure sections ... OK Drifts and Deflections ... OK Limit states and Limit state groups ... OK inelastic components ... OK Elastic components ... OK Materials ... OK Cross sections ... OK Strength sections ... OK Compound components ... OK Load cases and analysis series ... OK Load case combinations ... OK Set up default end zone ... OK |
Perform3D Nodes
4 - Perform3D Nodes Total Nodes Exported = 7100 ETABS and PERFORM 3D models have same Joints/Nodes names. Node Export ... OK |
Perform3D Constraints
5 - Perform3D Constraints Total Constraints Exported = 51 Constraints Export ... OK |
Perform3D Materials
For material concrete f’c is taken from its property and maximum Fu is checked from stress strain curve. If maximum Fu is greater than f’c then maximum Fu will be used for f’c.
For steel and rebar materials fy, fu and effective fy and fu are taken from their properties.
6 - Perform3D Materials Total Inelastic Fiber Rebar Material = 1 Total Inelastic Fiber Concrete Material = 6 Total Inelastic Shear Concrete Material = 6 Total Elastic Fiber Concrete Material = 6 Total Elastic Fiber Steel Material = 1 Total Elastic Shear Concrete Material = 6 Total Elastic Shear Steel Material = 1 Total Elastic Slab Concrete Material = 6 Total Elastic Slab Steel Material = 1 Material Export ... OK |
Perform3D Cross Sections
7 - Perform3D Cross Sections Total Steel Beam Sections Exported = 0 Total Concrete Beam Sections Exported = 53 Total Embedded Beam Sections Exported = 67 Total Steel Column Sections Exported = 0 Total Concrete Column Sections Exported = 53 Total Elastic Concrete Shear Wall Sections Exported = 13 Total Elastic Concrete Shear Wall Sections Exported = 0 Total General Shear Wall Sections Exported = 0 Total Inelastic Concrete Shear Wall Sections Exported = 13 Total Elastic Concrete Slab Sections Exported = 19 Total Elastic Steel Slab Sections Exported = 0 Cross-Sections Export ... OK |
Perform3D Elastic Properties
8 - Perform3D Elastic Properties Total Releases Exported = 2 Elastic-Properties Export ... OK |
Perform3D Inelastic Properties
9 - Perform3D Inelastic Properties Total Inelastic FEMA Concrete Beams = 0 Total Inelastic FEMA Steel Beams = 0 Total Inelastic FEMA Concrete Columns = 0 Total Inelastic FEMA Steel Columns = 53 Inelastic-Properties Export ... OK |
Perform3D Inelastic Hinge Properties
10 - Perform3D Inelastic Hinge Properties Total Frame Hinges = 582 Inelastic Frame Hinges Export ... OK Total Wall Hinges = 427 Inelastic Wall Hinges Export ... OK |
Perform3D Compound Properties
11 - Perform3D Compound Properties Total Elastic Steel Beam Sections = 0 Total FEMA Steel Beam Sections = 0 Total Elastic Steel Column Sections = 0 Total FEMA Steel Column Sections = 0 Total Elastic Concrete Beam Sections = 0 Total FEMA Concrete Beam Sections = 0 Total Elastic Concrete Column Sections = 53 Total FEMA Concrete Column Sections = 53 Total Concrete Beam Hinges = 292 Total Concrete Frame End Releases = 2030 Total Embedded Beams = 67 Total Compound Walls = 13 Total Concrete Wall Hinges = 427 Total Compound General Walls = 0 Compound Properties Export ... OK |
Perform3D Elastic Property Support Spring
12 - Perform3D Elastic Property Support Spring Total Elastic Property Support Springs = 0 Elastic Property Support Springs Export ... OK |
Perform3D Elements
13 - Perform3D Elements Total Concrete Columns = 1184 Total Concrete Beams = 2302 Total Concrete Braces = 9 Total Steel Columns = 0 Total Steel Beams = 0 Total Steel Braces = 0 Total Concrete EWalls = 1618 Total Concrete Walls = 0 Total Concrete GWalls = 0 Total Steel Walls = 0 Total Steel Slabs = 0 Total Concrete Slabs = 2253 Total Embedded Beams - 1 = 829 Total Embedded Beams - 2 = 896 Total Support Springs = 0 Elements Export ... OK |
Perform3D Mass
14 - Perform3D Mass Total Mass X = 73.9947835654403kN/mm-s^2 Total Mass Y = 73.9947835654403kN/mm-s^2 Total Mass Z = 73.9947835654407kN/mm-s^2 Total Mass RX = 74.674898969553kN/mm-s^2 Total Mass RY = 74.674898969553kN/mm-s^2 Total Mass RZ = 74.6748989695533kN/mm-s^2 Mass Source Export ... OK |
In Perform 3D model mass is not applied to supports.
Perform3D Self-Weight Load Patterns
15 - Perform3D Self-Weight Load Patterns Selfweight Pattern 'SelfWeight-DEAD' Total weight = 729021.79491532 kN Self-Weight Load Patterns Export ... OK |
Perform3D Nodal Loads
16 - Perform3D Nodal Loads Load Pattern 'LLR' total loads Force 1 = 0 kN Force 2 = 0 kN Force 3 = -3065.82339173456 kN Moment 1 = 0 kN -N Moment 2 = 0 kN -N Moment 3 = 0 kN -N Load Pattern 'SDL' total loads Force 1 = 0 kN Force 2 = 0 kN Force 3 = -2844.40956961833 kN Moment 1 = 0 kN -N Moment 2 = 0 kN -N Moment 3 = 0 kN -N Load Pattern 'LLNR' total loads Force 1 = 0 kN Force 2 = 0 kN Force 3 = -1471.96535014929 kN Moment 1 = 0 kN -N Moment 2 = 0 kN -N Moment 3 = 0 kN -N Nodal Loads Export ... OK |
Perform3D Element Loads
17 - Perform3D Element Loads Element Loads Export ... OK |
Perform3D Frame
18 - Perform3D Frame Views Total Frame Views = 56 Frame Views Export ... OK |
Total Frame Views = 56
Frame Views Export ... OK
Perform3D Sections
19 - Perform3D Section Cuts Total Section Cuts = 52 Section-Cuts Export ... OK |
Perform3D Drifts
20 - Perform3D Drifts Total Drifts = 98 Drifts Export ... OK |
Perform3D Load Cases
21 - Perform3D Load Cases Total Gravity Load Cases = 12 Total Earthquake Load Cases = 11 Load Cases Export ... OK |
Perform3D Model Saving
22 - Perform3D Model Saving Model Saved ... OK |