explicit dynamics chapter 5 results processing

7/15/2019 Explicit Dynamics Chapter 5 Results Processing

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1-1ANSYS, Inc. Proprietary

2009 ANSYS, Inc. All rights reserved.February 27, 2009

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Chapter 5

Explicit Dynamics Results Processing

ANSYS Explicit Dynamics


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Expl ic i t Dynam ics Resul ts Processin g



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Training ManualA. Viewing Results

When selecting a results branch, the Context toolbar displays ways

of viewing results:

In addition, the Timeline also has an animation toolbar which letsthe user set animation controls

Vector Display Controls

Min/Max

Displacement Scaling Display Method Contour Settings Outline Display

Probe

Play Pause

Distribute

Markers Frame Rate Control

Export


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Training ManualDisplacement Scaling

Pull-down menu lets you apply a scale

factor to displacements

Useful for viewing small displacements

True Scale is usually best for Explicit

Dynamics analyses

Can give unrealistic views for the largedisplacements that are common in

such analyses

Small Displacement Analysis

True Scale

5x AutoAuto ScaleTrue Scale

Large Displacement

Analysis


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Training Manual

Right Clicking on the legend in the graphics area lets you modify the

legend controls

Legend Controls

Edit Value

Export/Import/Switch to a saved legend setting

Horizontal/Vertical legend

Display Date/Time

Display Max/Min label on the legendSwitch to Logarithmic Scale

Switch to Scientific NotationNumber of Significant Digits

Increase/Decrease Contour Bands


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Training ManualLegend Controls

Click and drag contour dividers (or

type in) to specify contour ranges

A non-uniform distribution of contours

can be used as well

The legend bounds can be manipulated to

show result distributions more clearly for

contour plots

Max / Min values

are unchanged


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Training ManualLegend Controls

Independent Bands allow neutral colors to represent regions of the model

above or below the specified legend limits.

Legend Contour

Range


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Training ManualDisplay Method

The Geometry button controls the contour display

method. Four choices are available:

Exterioris the default

display option and is

most commonly used.

IsoSurfaces is useful

to display regions with

the same contour

value.

Capped IsoSurfaces

will remove regions of

the model where the

contour values are

above (or below) a

specified value.

Slice Planes allow a

user to cut through

the model visually.

Slice Planes

IsoSurfaces

Exterior

Capped IsoSurfaces


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Training ManualDisplay Method

Capped IsoSurfaces are manipulated by an independent controller:

Icons allow isosurface cap to be top or bottom or both The cap threshold can be controlled via the slider or by typing the value directly

Solid Single Isosurface Top Capped Bottom Capped


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Training ManualContour Settings

The Contours button controls the way in which contours

are shown on the model

Solid Fill

Contour BandsSmooth

Contours

Isolines


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Training Manual Outline Display

The Edges button lets you show the

undeformed geometry or mesh

Show Undeformed

Wireframe

Show Undeformed

Model

Show Elements

No Wireframe


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Training ManualSection Planes

Section Planes can be added and edited in both thepreprocessor as well as the post processor

To add a section plane select the Draw Section Plane icon,then click-drag with the left mouse

Selection planes can be turned on/off using the check box inthe details view

Delete section planes using the delete icon

Edit section planes by highlighting desired plane name andusing the handle in the Graphics window

Orient view for cut, Click and

draw vertical cut with mouse Handle bar appears

and bodies are sliced

Isometric view

shows slice plane

Move slice plane by

dragging handleClick on dashed side of

bar to reverse the slice


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Training ManualProbe Tool

The Probe Tool allows you to scope a result object

to a location and make that result parametric.

The Probe Tool can be scoped to geometry, a local

coordinate system or using a remote point.

The orientation of the result item can be with respect

to global or local coordinate systems.


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Training Manual. . . Probe Tool

Probe Tool example:

Local coordinate system defined as shown

Probe located at local CS

Stress results (all) requested

Local CS

Probe Location


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Training ManualCharts and Tables

Combine results data from multiple steps (static or transient) into

charts and/or tables:

Select New Chart and Table icon.

From the details Apply the desired result(s).

Use the CTRL key to select multiple results.

Select desired display items in details.


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Training ManualAnimation Controls

The animation toolbar allows user to play, pause, and stop animations

Note: animations are accessed via the Timeline at the bottom of thegraphics screen

Note: pause feature available during playback

Start/Stop/Pause

Distributed animation interpolates results

while results sets animates only solution

points.

Export video

(avi) file

Control resolution and speed


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Training ManualAlerts

Alerts are a simple way to check if a scalar result quantity satisfies acriterion:

Can be used on contour results (except vector results)

Highlight the particular result branch, RMB and insert an Alert

In the Details view, specify the criterion

In Outline tree, after Solve:

Green checkmark indicates criterion is satisfied

Red exclamation mark indicates criterion was not satisfied


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Training ManualVector Plots

Vector plots involve any result quantity with direction, such as deformation,

principal stresses/strains, and heat flux

Activate vectors for appropriate quantities using the vector graphics icon

Once the vectors are visible their appearance can be modified using the vectordisplay controls (see next slide for examples)

Proportional Vectors Equal Length Vectors

Vector Length Control

Grid AlignedElement Aligned Line Form Solid Form

Vector Density Control


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Training ManualVector Plots

Solid Form, Equal Length

Proportional LengthSolid Form, Grid Aligned

Equal Length


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Training ManualMultiple Viewports

Multiple viewports can be used to display various images at the same time

(model or post-processing data)


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Training ManualScoping Results

Limiting results displayed can be useful when post-processing:

Scoping automatically scales the legend to results for selected

regions

To scope contour results:

Pre-select geometry then request the result of interest

The non-selected geometry will be displayed as translucent

Results scoped

on a single body

Results scoped

on a single face


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Results can be scoped to a single edge (or vertex):

Select a single edge for results scoping.

A path plot of the result mapped on the edge will be displayed.

Use the Worksheet view for a graph only path plot.


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Scoping to a Path

Results can be scoped onto a path defined by: A coordinate system (or multiple systems)

Existing geometry (edges or points)

Existing points


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A path is created using construction geometry.

Paths are defined using coordinate systems, model edges or existing

points.

Examples:

E l i i t D i R l t P i


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Path results may be displayed in graphical form

The X axis may be displayed as path location (S) or time (transientanalyses)



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Training ManualCoordinate Systems

Results containing directional components can be mapped to a local

coordinate system:

Select from defined coordinate systems in the drop down list shown in the

detail window

Direction Deformation, Normal/Shear Stress/Strain, and Directional Heat Flux

can use coordinate systems



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Training Manual Coordinate Systems

For the model shown below, displaying results in the local cylindrical system

transforms stresses into that system

Stresses in Global Y-Direction Stresses in Local Cylindrical Y-Direction

explicit dynamics chapter 5 results processing

Documents

expl ic

results branch

training manuala

contour displaymethod

training manualdisplay

contour dividers ortype

specified legend limits

wellthe legend bounds