Release Date : Nov. 2014 Product Ver. : Gen 2015 (v1.1)admin.midasuser.com/UploadFiles2/74/Release Note Gen 2015 (v1.1).pdf · Gen Analysis & Design Gen 2015 (v1.1) Release Note 10

DESIGN OF General Structures

I n t e g r a t e d D e s i g n S y s t e m f o r B u i l d i n g a n d G e n e r a l S t r u c t u r e s

Release NoteRelease Date : Nov. 2014

Product Ver. : Gen 2015 (v1.1)

Enhancements

(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+

Analysis & Design 3

Pre & Post-Processing

(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

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midas Gen Analysis & Design Gen 2015 (v1.1) Release Note

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1. Supporting 64bit Solver, Pre/Post-processing & GPU solver

Analysis > Perform Analysis

Case study 1

• 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.

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


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Case study 2

Elements 116,586

Nodes 158,256

Analysis Type Material Nonlinear Analysis


Gen 32-bit 12335.85 sec

Gen 64-bit 5952.57 sec.

Case study 3

Elements 335,124

Nodes 224,950

Analysis TypeResponse Spectrum AnalysisLinear Time History Analysis

2.1 times

faster

Now able to

solve


Gen 32-bit Out of Memory

Gen 64-bit 13663.80 sec.


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Warping normal s tresses, fw

Bi -moment, df*Mfy

Warping shear stresses, τw

Flange shears, Vf

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

Section Data Section Properties Bi-moment and Warping Stress

Non uniform Torsion


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• 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

Mx (Torsional moment, Mx = Mt + Mw)

Mt (Twisting moment)

Mw (Warping moment)

Mb (Bi-moment)

Beam Stress Diagram

Beam Stress (7th DOF) Table

Boundaries > Define Supports, Beam End Release

Results > Reactions, Deformations, Forces, Stresses, Beam Detail Analysis


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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

Plate Stiffness Scale Factor

Properties > Scale Factor > Plate Stiffness Scale Factor

Section Stiffness Scale Factor Table

Boundary Change Assignment


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4. Performing Pushover Analysis only for Selected Pushover Load Cases

Pushover > Perform Pushover Analysis (Select)

• 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.

Select Pushover Load Case Hinge Status Results Pushover Curve


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5. Assigning a Single Pushover Hinge to Walls with Identical Wall ID

Pushover > Define Pushover Hinge Properties

• 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.

Gen 2014 (v2.1) Gen 2015 (v1.1)

Pushover Hinge Result Table


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Properties > Inelastic Hinge Properties

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).

Inelastic Hinge Properties


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• 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.

7. Star-Battened Section Checking as per EC3 (Available in Dec., 2014)

Design > Steel Code Checking

Design > Steel Optimal Design

2-Angel Section Data Steel Code Checking


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• 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.

8. Addition of RC Design Module as per ACI318-11 in Design+

Tools > midas Design+

Model ing and analysis in midas Gen Des ign/Check in midas Design +

midas Gen Pre & Post-processing Gen 2015 (v1.1) Release Note

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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 2015 (v1.1)

Better Accessibility in Pushover Analysis Menu

Gen 2014 (v2.1)


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2. Revit 2015 Interface

Functions Revit <> Gen

Linear

Elements

Structural Column <>

Beam <>

Brace <>

Curved Beam >

Beam System >

Truss >

Planar

Elements

Foundation Slab <>

Structural Floor <>

Structural Wall <>

Wall Opening & Window >

Door >

Vertical or Shaft Opening >

Boundary

Offset >

Rigid Link >

Cross-Section Rotation >

End Release >

Isolated Foundation Support >

Point Boundary Condition >

Line Boundary Condition >

Wall Foundation >

Area Boundary Condition >

Load

Load Nature >

Load Case >

Load Combination >

Hosted Point Load >

Hosted Line Load >

Hosted Area Load >

Other

Parameters

Material <>

Level >

Send Model to midas Gen

Revit 2015 Gen2015

• Using Midas Link for Revit Structure, direct data transfer between midas Gen and Revit 2015 is available for Building Information Modeling (BIM)workflow. MidasLink for Revit Structure enables usto directly transfer a Revit model data to midasGen, and delivery back to the Revit model file. It isprovided asan Add-In module in Revit Structure and midas Gen text file (*.mgt) is used for the roundtrip.

File > Import > midas Gen MGT File

File > Export > midas Gen MGT File


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3. Tekla Structure v20 Interface

Tekla Structure v20

Gen2015

• Tekla Structures interface isa tool provided to speed up the entire modeling, analysis, and design procedure of a structure by direct data transfer withmidasGen. Data transfer is limited to structural elements. Tekla Structure interface enablesusto directly transfer aTekla model datato midasGen, anddelivery back to the Tekla model file. midas Gen text file (*.mgt) is used for the roundtrip.

File > Import > midas Gen MGT File

File > Export > midas Gen MGT File

Category Features Tekla <> Gen

MATERIAL

concrete <>

steel <>

pre cast - wood and other typ

es<>

Material user defined <>

ELEMENT TYPE/

ROTATIONS

vertical column <>

inclined column <>

straight beam <>

curved beam >

Slab <>

vertical panel >

2D ELEMENTS Concrete panels and slab <>

BOUNDARY CONDITIONS

support >

beam end release <>

section offset >

STATIC LOAD

self weigth >

linear load

(uniform or trapezoidal)<>

MERGE OPTION

new element <>

new element that

divide other elements<>

topology changes <>


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4. Changing Plate Local Axis

Results > 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 thereference vector for the local axis direction of plate elements.

• Inthe previous version, plate stresses/forces were notable to be plotted accordingto the cylindrical axis. Also plate localaxiscould not be freelyalignedtothe 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 definethe local axis for posit processing regardless of plate edge line.

Local Axis for Post-processing

Related result functions

Plate Forces/Moments

Plane-Stress/Plate Stresses

Plane Strain Stresses

Axisymmetric Stresses


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5. Auto-generation of Linear Constraint at Wall and Plate Element Connection

Linear Constraint Main Control Data

Analysis > Main Control Data

• Connectivity between wall element and meshed plate elements can be automatically considered by checking on “Auto Constraint for Wall ElementsConnectivity” option in Main Control Datadialog box.

• The program internally generates Linear Constraints to the related nodes for the connectivity.


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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 ofbeam/wall elements only.

Load > Static Load > Assign Floor Loads

Ass ign Floor Loads


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Add

Delete

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

Wal l Opening Main Control Data Auto generation of Linear Constraint


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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 beassigned by towers.

• Inthe previous version, Assign Module functionwasavailable only in the post-processing. In the pre-processing, the user had to create eachtower withslight different height in order to consider the story diaphragm by towers. In this case, static wind and seismic load needed to be manually assigned. Inthe new version, all the problems are now resolved by defining module in pre-processing.

Structure > Control Data > Story

Documents

Release Date : Nov. 2014 Product Ver. : Gen 2015 (v1.1)admin.midasuser.com/UploadFiles2/74/Release Note Gen 2015 (v1.1).pdf · Gen Analysis & Design Gen 2015 (v1.1) Release Note 10