1. No category

Release Note
Release Date : Nov. 2014
Product Ver. : Gen 2015 (v1.1)
DESIGN OF General Structures
Integrated
Design
System
for
Building
and
General
Structures
Enhancements
 Analysis & Design
(1)
Supporting 64bit Solver, Pre/Post-Processing & GPU solver
(2)
7 DOF Beam Elements considering Warping Constant
(3)
Stiffness Scale Factor for Plate Element
(4)
Performing Pushover Analysis only for Selected Pushover Load Cases
(5)
Assigning a Single Pushover Hinge to Walls with Identical Wall ID
(6)
Assigning Inelastic Hinge Properties to Wall Elements
(7)
Star-Battened Section Checking as per EC3 (Available in Dec., 2014)
(8)
Addition of RC Design Module as per ACI318-11 in Design+
 Pre & Post-Processing
3
13
(1)
Ribbon Menu
(2)
Revit 2015 Interface
(3)
Tekla Structure v20 Interface
(4)
Changing Plate Local Axis
(5)
Auto-generation of Linear Constraint at Wall and Plate Element Connection
(6)
Assigning Floor Loads to the Area including Shear Walls generated with Plate Elements
(7)
Considering Openings in Wall Elements
(8)
Multi-towers Module for Story and Static Wind Load Definition
midas
Gen
Analysis & Design
Gen 2015 (v1.1) Release Note
1. Supporting 64bit Solver, Pre/Post-processing & GPU solver
• 64-bit solver is capable of accessing memory above the 4GB limit of the Windows 32-bit platform. In a 32-bit operating system there is a
limitation of 4GB of memory that can be addressed. Windows reserves 2GB for the operating system leaving only 2GB for external programs.
Now huge models can be analyzed and solution time is much faster.
• GPU-accelerated computing offers faster solution time by offloading compute-intensive portions of the solver to the GPU, while the
remainder of the codes still runs on the CPU.
 Analysis > Perform Analysis
Ca s e study 1
Elements
56,634
Analysis Type
Static Analysis
System
Solution Time
Gen 32-bit
2641.57 sec.
Gen 64-bit
1590.49 sec.
1.7 times faster
3 / 20
midas
Gen
Analysis & Design
Gen 2015 (v1.1) Release Note
Ca s e study 2
Elements
116,586
System
Solution Time
Nodes
158,256
Gen 32-bit
Out of Memory
Analysis Type
Material Nonlinear Analysis
Gen 64-bit
13663.80 sec.
Elements
335,124
System
Solution Time
Nodes
224,950
Gen 32-bit
12335.85 sec
Analysis Type
Response Spectrum Analysis
Linear Time History Analysis
Gen 64-bit
5952.57 sec.
Now able to
solve
Ca s e study 3
2.1 times
faster
4 / 20
midas
Gen
Analysis & Design
Gen 2015 (v1.1) Release Note
2. 7 DOF Beam Elements considering Warping Constant
• In case of non-uniform torsion which occurs when warping deformation is constrained, torque is resisted by St.Venant torsional shear stress
& warping torsion. In Gen2015, the effects of warping torsion can be simulated in 1D beam elements for more accurate results in case of the
curved member, eccentric loading, and difference in centroid and shear center.
• Bi-moment method which is approximate method of torsion analysis for practical purpose is also provided.
• When “Consider Warping Effect(7th DOF)” is considered, warping constant (Iw), warping function (w1, w2, w3, w4), and shear strain due to
twisting moment (γxy1, γxy2, γxy3, γxy4, γxz1, γxz2, γxz3, γxz4) can be checked in Section Properties dialog box.
 Properties > Section Properties
Non uniform Torsion
Wa rpi ng normal s tresses, fw
Bi -moment, df*Mfy
Wa rpi ng shear stresses, τw
Fl a nge shears, Vf
Secti on Data
Section Properties
Bi -moment and Warping Stress
5 / 20
midas
Gen
Analysis & Design
Gen 2015 (v1.1) Release Note
• Applicable element type: General beam/Tapered beam
• Applicable boundary condition:Supports, Beam End Release
• Applicable analysis type : Linear Static , Eigenvalue , Response Spectrum, Construction Stage Analysis
• Related post-processing: Reactions, Displacements, Beam Forces/Moments, Beam Stresses
 Boundaries > Define Supports, Beam End Release
 Results > Reactions, Deformations, Forces, Stresses, Beam Detail Analysis
Mx (Torsional moment, Mx = Mt + Mw)
Mt (Twisting moment)
Mw (Warping moment)
Mb (Bi-moment)
Bea m Stress Diagram
Bea m Stress (7th DOF) Table
6 / 20
midas
Gen
Analysis & Design
Gen 2015 (v1.1) Release Note
3. Stiffness Scale Factor for Plate Element
• Apply scale factors to the cross-sectional properties of plate elements. In-plane shear and bending stiffness of specific plate elements may be
reduced to reflect cracked sections of concrete walls and slabs. For unstructured meshes, scale factors can be applied to the user-defined
direction.
• Applicable analysis types are as follows: Static, Linear Time History, Response Spectrum, Construction Stage and Geometric Nonlinear Analysis
 Properties > Scale Factor > Plate Stiffness Scale Factor
Section Stiffness Scale Factor Table
Pl a te Stiffness Scale Factor
Boundary Cha nge Assignment
7 / 20
midas
Gen
Analysis & Design
Gen 2015 (v1.1) Release Note
4. Performing Pushover Analysis only for Selected Pushover Load Cases
• Pushover analysis can now be performed for the selected pushover load cases only. Result Output file will be generated by pushover load
cases, so that the pre-performed pushover load case results will not be deleted when the user performs pushover analysis for the other
pushover load cases.
 Pushover > Perform Pushover Analysis (Select)
Sel ect Pushover Load Ca se
Hi nge Status Results
Pus hover Curve
8 / 20
midas
Gen
Analysis & Design
Gen 2015 (v1.1) Release Note
5. Assigning a Single Pushover Hinge to Walls with Identical Wall ID
• In the previous version, pushover hinges were assigned to each wall element regardless of wall ID. In the new version, when identical wall ID is
assigned to the straight walls composed of multiple wall elements in one story, one pushover hinge will be assigned to the entire connected
wall elements.
 Pushover > Define Pushover Hinge Properties
Gen 2014 (v2.1)
Gen 2015 (v1.1)
Pus hover Hinge Result Ta ble
9 / 20
midas
Gen
Analysis & Design
Gen 2015 (v1.1) Release Note
6. Assigning Inelastic Hinge Properties to Wall Elements
• In the previous version, inelastic hinge properties were assigned by Section Properties. Also the program was not able to consider different
yield strength between i-end and j-end. In the new version, inelastic hinge properties are assigned by elements and different yield strength of
both ends can be considered. Inelastic hinge properties can now be assigned by Drag & Drop from Works Tree.
• Inelastic hinges were able to be assigned to beam, truss, and springs. In the new version, it can also be assigned to wall elements (Membrane
& Plate type).
 Properties > Inelastic Hinge Properties
Inelastic Hinge Properties
10 / 20
midas
Gen
Analysis & Design
Gen 2015 (v1.1) Release Note
7. Star-Battened Section Checking as per EC3 (Available in Dec., 2014)
•
New section database for star-battened section is implemented. Same DB sections as angle type are used.
•
Steel code checking and steel optimal design as per EN1993-1-1:2005 are implemented for compression verification. Recommended, Sweden and
Singapore national annex can be selected. Compression yielding checks and buckling checks are provided.
 Design > Steel Code Checking
 Design > Steel Optimal Design
2-Angel Section Data
Steel Code Checking
11 / 20
midas
Gen
Analysis & Design
Gen 2015 (v1.1) Release Note
8. Addition of RC Design Module as per ACI318-11 in Design+
•
Combined Wall, Retaining Wall, Combined Footing and Wall Footing modules are now available as per ACI318-11.
•
Footing reinforcement drawings are provided. The drawings can be exported in *.dwg format file.
•
Quantities for reinforcement, concrete, and form can be viewed in atable format. Itcan also be exported in MS excel format file.
 Tools > midas Design+
Model ing and analysis i n midas Gen
Des ign/Check in mi das Design +
12 / 20
midas
Gen
Pre & Post-processing
Gen 2015 (v1.1) Release Note
1. Ribbon Menu
•
Enhance modeling efficiency by arranging menu tabs according to the modeling and design process.
•
Reducing the number of mouse clicking by placing frequently used functions atthe top level of each tab menu.
•
Grouping load types to enter desired load data more intuitively
•
Specifying design code from the tab menu without opening related dialog box
•
Dual Tree Menu to see works tree and group tree simultaneously in construction stage model
Grouping Load Types
Intuitive Icon Menus
Selecting
Design Code
Gen 2014 (v2.1)
Gen 2015 (v1.1)
Better Accessibility in Pushover Analysis Menu
13 / 20
midas
Gen
Pre & Post-processing
Gen 2015 (v1.1) Release Note
2. Revit 2015 Interface
•
Using Midas Link for Revit Structure, direct data transfer between midas Gen and Revit 2015 is available for Building Information Modeling (BIM)
workflow. Midas Link for Revit Structure enables us to directly transfer a Revit model data to midas Gen, and delivery back to the Revit model file. It is
provided as an Add-In module in Revit Structure and midas Gen text file (*.mgt) is used for the roundtrip.
Functions
 File > Import > midas Gen MGT File
 File > Export > midas Gen MGT File
Linear
Elements
<>
Beam
<>
Brace
<>
Curved Beam
>
Beam System
>
Truss
Planar
Elements
Boundary
Send Model to midas Gen
Load
Revi t 2015
Gen2015
>
Foundation Slab
<>
Structural Floor
<>
Structural Wall
<>
Wall Opening & Window
>
Door
>
Vertical or Shaft Opening
>
Offset
>
Rigid Link
>
Cross-Section Rotation
>
End Release
>
Isolated Foundation Support
>
Point Boundary Condition
>
Line Boundary Condition
>
Wall Foundation
>
Area Boundary Condition
>
Load Nature
>
Load Case
>
Load Combination
>
Hosted Point Load
>
Hosted Line Load
>
Hosted Area Load
Other
Parameters
Revit <> Gen
Structural Column
Material
Level
>
<>
>
14 / 20
midas
Gen
Pre & Post-processing
Gen 2015 (v1.1) Release Note
3. Tekla Structure v20 Interface
•
Tekla Structures interface is a tool provided to speed up the entire modeling, analysis, and design procedure of a structure by direct data transfer with
midas Gen. Data transfer is limited to structural elements. Tekla Structure interface enables us to directly transfer aTekla model datato midas Gen, and
delivery back to the Tekla model file. midas Gen text file (*.mgt) is used for the roundtrip.
 File > Import > midas Gen MGT File
Category
 File > Export > midas Gen MGT File
MATERIAL
ELEMENT TYPE/
ROTATIONS
Tekl a Structure v20
2D ELEMENTS
BOUNDARY CONDITIONS
STATIC LOAD
MERGE OPTION
Gen2015
Features
Tekla <> Gen
concrete
<>
steel
<>
pre cast - wood and other typ
es
<>
Material user defined
<>
vertical column
<>
inclined column
<>
straight beam
<>
curved beam
>
Slab
<>
vertical panel
>
Concrete panels and slab
<>
support
>
beam end release
<>
section offset
>
self weigth
>
linear load
(uniform or trapezoidal)
<>
new element
<>
new element that
divide other elements
<>
topology changes
<>
15 / 20
midas
Gen
Pre & Post-processing
Gen 2015 (v1.1) Release Note
4. Changing Plate Local Axis
•
Plate local axis for checking results can be aligned along with global axis or cylindrical axis (±X, ±Y, ±Z, ±R, ±TH). The user can directly specify the
reference vector for the local axis direction of plate elements.
•
Inthe previous version, plate stresses/forces were notable to be plotted according to the cylindrical axis. Also plate localaxis could not be freelyaligned
tothe desired direction due to the limitation that element local x-axis must be parallel to the element edge line. In the new version, the user can define
the local axis for posit processing regardless of plate edge line.
 Results > Local Axis
Related result functions
 Plate Forces/Moments
 Plane-Stress/Plate Stresses
 Plane Strain Stresses
 Axisymmetric Stresses
Loca l Axis for Post-processing
16 / 20
midas
Gen
Pre & Post-processing
Gen 2015 (v1.1) Release Note
5. Auto-generation of Linear Constraint at Wall and Plate Element Connection
•
Connectivity between wall element and meshed plate elements can be automatically considered by checking on “Auto Constraint for Wall Elements
Connectivity” option in Main Control Datadialog box.
•
The program internally generates Linear Constraints to the related nodes for the connectivity.
 Analysis > Main Control Data
Li near Constraint
Ma i n Control Data
17 / 20
midas
Gen
Pre & Post-processing
Gen 2015 (v1.1) Release Note
6. Assigning Floor Loads to the Area including Shear Walls generated with Plate Elements
•
Floor Load can be applied when the area is composed of plate elements. In the previous version, floor load was applicable to the area composed of
beam/wall elements only.
 Load > Static Load > Assign Floor Loads
As s ign Floor Loads
18 / 20
midas
Gen
Pre & Post-processing
Gen 2015 (v1.1) Release Note
7. Considering Openings in Wall Elements
•
Opening in wall elements can be easily generated and deleted without dividing awalls into multiple elements.
•
Connectivity can be considered by automatically generating Linear Constraint for the nodes in the divided edges.
 Node/Elements > Wall Opening
Add
Delete
Wa l l Opening
Ma i n Control Data
Auto generation of Li near Constraint
19 / 20
midas
Gen
Pre & Post-processing
Gen 2015 (v1.1) Release Note
8. Multi-towers Module for Story and Static Wind Load Definition
•
Multi towers can be defined using Define Module dialog box. Floor diaphragm can be generated for each tower and wind/seismic load can also be
assigned by towers.
•
Inthe previous version, Assign Module function was available only in the post-processing. In the pre-processing, the user had to create eachtower with
slight different height in order to consider the story diaphragm by towers. In this case, static wind and seismic load needed to be manually assigned. In
the new version, all the problems are not resolved by defining module in pre-processing.
 Structure > Control Data > Story
20 / 20