midas GTS Advanced Webinar Date: June 5, 2012 Topic: General Use of midas GTS (Part II) Presenter: Vipul Kumar Bridging Your Innovations to Realities GTS MIDAS Information Technology Co., Ltd. [1/30]
Contents: 1. Recap 2. Boundary Conditions 3. Load Conditions 4. Analysis 5. Post-processing Results 6. Application Areas Bridging Your Innovations to Realities GTS MIDAS Information Technology Co., Ltd. [2/30]
Recap Project details Fill material in the top layer, sand in the middle and loam at the bottom. Sheet pile embedded in the soil.(since 2-D analysis, modelled as a beam element). Non-linear material model(mc) to define the soil properties. Modeling anchors using truss element. Prestressed anchors embedded in the soil. MIDAS Information Technology Co., Ltd. [3/30]
Recap Size control Meshing Low order triangular elements are generated through loop mesher with an element size of 1. MIDAS Information Technology Co., Ltd. [4/30]
Interface elements How to create the interaction between the sheet pile and the neighboring soil Rigid links need to be created for nodes that have been splitted above. MIDAS Information Technology Co., Ltd. [5/30]
Boundary conditions How to apply the different boundary conditions required for the project? MIDAS Information Technology Co., Ltd. [6/30]
Boundary Conditions Boundary Conditions Support Ground supports Nodal Head/Flux Seepage Face/Flux Nodal Flux, Surface Flux Seepage Boundary Function Draining condition Slip surface Change element attribute Unsaturated Property Function All boundary conditions can be applied both to FE and geometry. MIDAS Information Technology Co., Ltd. [7/30]
Supports Supports Model > Boundary > Supports MIDAS Information Technology Co., Ltd. [8/30]
Ground Supports Ground Supports Model > Boundary > Ground Supports MIDAS Information Technology Co., Ltd. [9/30]
Nodal head/ flux Head & Flux Model > Boundary > Nodal Head Model > Boundary > Nodal Flux MIDAS Information Technology Co., Ltd. [10/30]
Seepage Face/Flux Seepage Face& Flux Model > Boundary > Seepage Face Model > Boundary >Seepage Flux MIDAS Information Technology Co., Ltd. [11/30]
Seepage Boundary function Seepage Boundary function Model > Boundary > Seepage boundary function Assigns Boundary conditions in terms of time. Change of boundary conditions w.r.t time can be assigned in transient state analysis. Example: Variation of water level of reservoir. Seasonal inflow and outflow of rain. Change of pumping rate of pump. MIDAS Information Technology Co., Ltd. [12/30]
Drainage condition & Non-consolidation condition Draining condition Model > Boundary > Draining condition Non consolidation condition Model > Boundary > Non-consolidation condition Applied in areas where excess pore pressure is zero. Mainly applied to consolidation analysis and groundwater seepage analysis. MIDAS Information Technology Co., Ltd. [13/30]
Slip surfaces Slip surface Model > Boundary > Slip surface(circular/polygon) MIDAS Information Technology Co., Ltd. [14/30]
Change element attribute/for cs Hardening of soil or other change in attributes can be accounted MIDAS Information Technology Co., Ltd. [15/30]
How to apply the Loads? MIDAS Information Technology Co., Ltd. [16/30]
Load conditions Load Self Weight Transfer to FE Force, Moment Prescribed Displacement Pressure Line / Element Beam Load Pressure on Surface Pressure on Element-Face Nodal / Element Temperature, Temperature Gradient Prestress Nodal Mass Response Spectrum Analysis Data (including Various Design Spectrum Data) Time History Analysis Data - Time Forcing Function (including 54 Earthquake Acceleration Records) - Ground Acceleration - Time Varying Static Load - Dynamic Nodal Load, Dynamic Surface Load - Time History Result Function All loads can be applied both to FE and geometry. MIDAS Information Technology Co., Ltd. [17/30]
Self weight Independent load condition based on the body force. MIDAS Information Technology Co., Ltd. [18/30]
Nodal /moment loads Nodal Force Moment Model > Loads > Nodal force Model > Loads > Moment MIDAS Information Technology Co., Ltd. [19/30]
Prescribed displacements Prescribed Displacements Model > Loads > Prescribed displacements Examine the structural behaviors under the conditions where displacements for the restrained DOF are known. A rigid body motion is expected. Detailed safety diagnosis is needed in terms of ground deformation. When the displacements of specific part are used as the boundary conditions after the analysis of global model is performed. MIDAS Information Technology Co., Ltd. [20/30]
Pressure load Pressure load Model > Loads > Pressure load MIDAS Information Technology Co., Ltd. [21/30]
Line/element beam load Line Load Model > Loads > Line load Element beam Load Model > Loads > Element beam load When a series of beams are connected continuously, just selecting both ends of the row of beam elements. MIDAS Information Technology Co., Ltd. [22/30]
Temperature load Temperature Load Model > Loads > Nodal Temperature/Element Temperature/Temperature Gradient Applying an element beam load is similar to applying a nodal temperature load at the nodes connecting the elements selected. Temperature gradient load is only considered for beam and plate elements. MIDAS Information Technology Co., Ltd. [23/30]
Prestress Prestress Model > Loads > Prestress MIDAS Information Technology Co., Ltd. [24/30]
Time history Load Time history Load Model > Loads > Time history Data MIDAS Information Technology Co., Ltd. [25/30]
Response Spectrum Load Response spectrum Load Model > Loads > Response Spectrum Load MIDAS Information Technology Co., Ltd. [26/30]
Load Combination Load Set Model > Load > Load Set MIDAS Information Technology Co., Ltd. [27/30]
INDEX Analysis Control GTS Analysis Case Analysis Case Construction Stage MIDAS Information Technology Co., Ltd. [28/30]
Analysis Capabilities MIDAS Information Technology Co., Ltd. [29/30]
Analysis Case Analysis Case Analysis > Analysis Case Drag & Drop Tree Structure Excavation Initial & Embanking Analysis Type MIDAS Information Technology Co., Ltd. [30/30]
Parametric Study & Batch study MIDAS Information Technology Co., Ltd. [31/30]
Post processing results MIDAS Information Technology Co., Ltd. [32/30]
Post-processing Contour Plot Result Graph Works Tree MS-Excel Result Table MIDAS Information Technology Co., Ltd. [33/30]
Contour Plot Types Contour with Mesh Contour with Iso-line Contour with Mesh & Iso-line Contour without Mesh Gradient Contour Gray Contour MIDAS Information Technology Co., Ltd. [34/30]
Contour with Deformation Undeformed Model Front View Side View Displacement Contour (Gradient Plot) with Deformed Shape MIDAS Information Technology Co., Ltd. [35/30]
Iso-surface Plots Multiple Iso-surfaces with Feature-Edge Multiple Iso-surfaces with Mesh MIDAS Information Technology Co., Ltd. [36/30]
Iso-surface Plots (Capped) Capped Plot (Lower Part) Original Iso-surface Plot (Multiple Plots) Base Iso-surface Capped Plot (Upper Part) MIDAS Information Technology Co., Ltd. [37/30]
Slice Plots Multiple Slice Planes (Solid) MIDAS Information Technology Co., Ltd. [38/30]
Clipping Plots Original Plot Curved Tunnel (Slice Plot) Clipped Plot (Upper Part) Clipped Plot (Lower Part) Clipping Plane Definition by Mouse Dragging MIDAS Information Technology Co., Ltd. [39/30]
Clipping Plots Original Plot Multiple Clipping Planes MIDAS Information Technology Co., Ltd. [40/30]
Partition Plots Model (6 Mesh Sets) Mesh Set based Partition Detach mesh sets by mouse dragging Front View Side View Original Plot Partitioned Plot MIDAS Information Technology Co., Ltd. [41/30]
Hybrid Plots Front View Clipping Plane Vector Plot Original Plot Contour Plot Top View Clipped Contour Plot + Vector Plot MIDAS Information Technology Co., Ltd. [42/30]
Diagram Plots Axial Force of 2D Embedded Trusses (R/B) Axial Force of 3D Embedded Trusses (R/B) Beam Force Diagram (2D Shotcrete) Beam Moment Diagram (2D Shotcrete) MIDAS Information Technology Co., Ltd. [43/30]
Vector Plots Vector Plot without Mesh Vector Plot on Contour (Principal Strain) MIDAS Information Technology Co., Ltd. [44/30]
Animations Click Animation to Start 2D Construction Stage Analysis 3D Construction Stage Analysis (Clipped Plot) MIDAS Information Technology Co., Ltd. [45/30]
Result Extraction 3D Step Graph 3D Step Graph Result Location Stage MIDAS Information Technology Co., Ltd. [46/30]
Settlement Profiles Mesh & Displacement Contour Define Settlement Grids Settlement (MS-Excel Compatible Table) Settlement Profile (3D Plane, 2D Line) MIDAS Information Technology Co., Ltd. [47/30]
On-Curve Diagrams 3D On-Curve Graphs on Contour Plot Result Data at User-Specified Sampling Points Fault Zone 2D On-Curve Graphs on Contour Plot Front View MIDAS Information Technology Co., Ltd. [48/30]
Probe & Result Tag Side View MIDAS Information Technology Co., Ltd. [49/30]
Probe & Result Tag Flying View Flying View Flying View MIDAS Information Technology Co., Ltd. [50/30]
Application Areas MIDAS Information Technology Co., Ltd. [51/30]
Application Areas MIDAS Information Technology Co., Ltd. [52/30]
Thank You! For more information, please visit us at http://en.midasuser.com Bridging Your Innovations to Realities GTS MIDAS Information Technology Co., Ltd. [53/30]