r15_mecheaseofuse_11th_feb.pdf

2013 ANSYS, Inc. February 20, 20141

R15 Update Training Mechanical Preprocessing : Ease of Use

P.Shivakumar

ANSYS INDIA

Bangalore


Release Highlights

Mesh-based geometry

Assembling Mechanical Models

Parallel Meshing

Direct Scoping

Filtering

Element Selection

Postprocesssing

Documentation


Release Highlights

Mesh-based geometry


Parallel Meshing

Direct Scoping

Filtering

Element Selection

Postprocesssing

Documentation


Ability to import CDB file in to Mechanical using

the new External Model system

Mesh only import, Rigid transforms

supported

Import legacy MAPDL models

Import pre-meshed Fracture models

Contact detection is possible after reading

in assemblies of meshes

Supports importing of multiple CDB files

Import Mesh


You can use Mechanical as a standalone post-

processor.

Combine External Model with Mechanical.

Use Mechanical Tools > Read Results Files

Import Mesh

test-1.cdb


Release Highlights

Mesh-based geometry


Parallel Meshing

Direct Scoping

Filtering

Element Selection

Postprocesssing

Documentation


Combine pre-existing models, meshes, and geometries

Update connections, define loads, solve in Mechanical

Define transformations and copies in the assembly

Model Assembly

+ =


Model Assembly


Model Assembly

Allows user to split then later re-assemble model

Original Assembly Sub-Assembly models can be worked on

independently, and later assembled

Upper Sub-Assembly

Lower Sub-Assembly

Shaft/Connector Sub-Assembly

Sub-Assembly models

are updated separately

at project level


Base model has geometry, mesh,

and named selections

Specify No. of Copies = 2

Specify Rotation

Example: Single sector


Example: Resulting Mesh

Mesh and Geometry are exact copies in

the combined system

Base System

Combined Mesh


Release Highlights

Mesh-based geometry


Parallel Meshing

Direct Scoping

Filtering

Element Selection

Postprocesssing

Documentation


Parallel Meshing

Parallel Part meshing

Simultaneously meshes multiple

parts on multiple CPUs

Works for all part mesh methods

For mesh methods that mesh

in parallel will utilize cores

for both part meshing and

body meshing (user should

set Number of CPUs for

meshing methods and

Number of CPUs for part

meshing appropriately)

Program controlled will attempt to

use all cores on the machine

provided there is enough RAM


Mesh Failure Handling



Improved failure handling:

Better user indication

Markers to help find

problematic faces

On inspection, use single/multiple

edge display to see holes in mesh


Better user indication:

When mesh sizes are changed, and mesh goes

out of date, bodies are indicated in yellow



Release Highlights

Mesh-based geometry


Parallel Meshing

Direct Scoping

Filtering

Element Selection

Postprocesssing

Documentation


Mechanical now allows you to connect Joints, Springs, Beam Connections, Point

Mass and Thermal Point Mass objects to a body directly without using an

intermediate connection element.

Direct Scoping

Applied By uses the new value of Direct Attachment .

Remote Attachment option ensures previous release

behavior with creation of an internal Remote Point object.


Direct Attachment Point Mass example

A Directly Attached Point

Mass could be created using

Geometry Selection Scoping

Method, as well as via a

Named Selection.

The Point Mass icons are

displayed at the locations

corresponding to the chosen

scoped vertex or the selected

node.


Direct Attachment Joint Example

Directly Attached Joint

shows both the Reference

and Mobile Coordinate

Systems in the tree and

also on the graphical

display.

Directly Attached Joint

could be created using

Geometry Selection as

the Scoping Method, Or

via a Named Selection

containing only one node

or vertex.


Release Highlights

Mesh-based geometry


Parallel Meshing

Direct /Remote Scoping

Filtering

Element Selection

Postprocesssing

Documentation


Remote Point Direct Scoping

When multiple nodes are

selected to set the location,

the average location of all the

selected nodes will be used.

Remote points can now be

scoped directly to single or

multiple nodes.


Remote Force scoped to Remote Point

Remote Points that are scoped to Nodes can be work in tandem with any object

that uses Remote Points (Remote Forces, Remote Displacements, Moments,

Joints, Springs, Beam Connections, Point Masses).

Corresponding FE

connection display


Release Highlights

Mesh-based geometry


Parallel Meshing

Direct Scoping

Filtering

Element Selection

Postprocesssing

Documentation


Filtering the Tree OutlineFiltering provides the ability to control the amount of data shown in the

Mechanical tree view. It is also a way to control what is included in the

Report. In previous versions, users could filter the tree based on a search

criteria.

Name

Tag

Type (Results)

State (Suppressed, Not Licensed, Underdefined)

Mechanical v150 adds options to:

Remove items from the tree which match the search criteria.

Filter the tree for Boundary Conditions, Connections, or Command objects

Filter the tree based on a Coordinate System.


Example Remove Option

To remove objects that match the search from the tree, select the required

search criteria and select the Remove icon.

Example: Remove any object with name Force.


Example Filter Boundary Conditions, Connections, or Commands

To filter based on a specific types, select the Type filtering option and then

choose the specific type from the drop-down list.


Example Filter based on a Coordinate System

To filter based on a coordinate system, select the Coordinate System

filtering option and then choose the specific coordinate system from the

drop-down list.

Tree gets trimmed to only show the Coordinate System and the objects that

reference it.


Mechanical Shortcut Keys


Ctrl+ A: Select All Objects

Ctrl+ B: Body Filter Selection

Ctrl+ E: Edge Filter Selection

Ctrl+ F: Face Filter Selection

Ctrl+ P: Point Filter Selection

F6: Toggle Model Apperance

F7: Zoom to Fit

F8: Hide Selected Face

F9: Hide Selected Object

Mechanical Shortcut Keys - Hotkeys


Release Highlights

Mesh-based geometry


Parallel Meshing

Direct Scoping

Filtering

Element Selection

Postprocesssing

Documentation


Elements can be selected in the graphics

window

Selection Information available for a given set

of elements. (ELIST functionality)

Create Element Based Named Selections

Direct Graphical Selection

Criterion Based Selection (Type, Mesh Quality,

location, etc.)

Export Support (Right Click Context Menu)

Written into ds.dat as element component

Results can be scoped to elements

Regular and User Defined results

Element Selection


Element Selection - Graphical SelectionMesh pick mode Element Filter (NEW)Node Filter


Element Selection Criteria

Several different choices for Worksheet selection criteria including:

ID

Type (Hex20, Tet10, Quad4, etc)

Location (Local or Global CS)

Distance (From a Coordinate System)

Size (Volume for Solids, Area for Shells 2D

Mesh Metric (Quality, Skewness, Jacobian, etc)

Convert to/from nodes (NSLE, ESLN)

From other Named Selection (stacked

Selections)


Example: Criterion based selection

Plot the surrounding

elements of two base

elements.


Example: Selecting elements of a given type


Example: Selecting elements of poor quality


Scoping Results to Elements


Scoping Results To Elements

Both regular and User Defined Results can be scoped to elements. Either

directly (as seen below) or via Element Named Selections


Example: User-Defined Element Result Scoped to a set of Elements


Create Named Selections through Promotion


Context menu option to create a Named Selection from an existing object that is

scoped to geometry or mesh.

Remote Points

Contact Regions

Springs

Joints

Boundary Conditions

Results and Custom Results

Promote Scoped Objects to Named Selection


Adds two new Named Selections based on the existing name of the contact object

as well as its geometry scoping, Contact and Target.

Example : Contact Regions promoted to Named Selections


Release Highlights

Mesh-based geometry


Parallel Meshing

Direct Scoping

Filtering

Element Selection

Postprocesssing

Documentation


Averaged and Unaveraged Results


Average Across Bodies tends to smooth contours at the interfaces of bodies.

Seeks to mimic MAPDL (Full Graphics and AVRES,1,FULL PowerGraphics) for quantities

such as stress and strain.


Average Across Bodies is not

enabled by default!

The feature may add to CPU or

throughput times!

There are limitations and

restrictions on the next slide



Average Across Bodies : Yes

Average Across Bodies : No


Element Scoping Result Averaging


When Element Scoping is employed, only the result contributions from the

selected elements will be used. Contributions from unscoped elements are

ignored. This is consistent with MAPDL.

The following example is a simple plate with a hole under a tensile load. The

mesh is coarse enough that there is a large variation in the stress field from

element to element (i.e. the averaged and unaveraged result plots are

significantly different).

This behavior is illustrated on the following slide

Element Scoping and Result Averaging


Element Scoping and Result AveragingGlobal Averaged: Max=205, Min=-50 Global Unaveraged: Max=276, Min=-74

1 Element: Max=276: Matches Unaveraged

Min=127

3 Elements: Max=205: Matches Averaged

Min=-74: Matches Unaveraged


Release Highlights

Mesh-based geometry


Parallel Meshing

Direct Scoping

Filtering

Element Selection

Postprocesssing

Documentation


Documentation


Where to find New Feature information?

Release Documentation is NOT the Help files!

Download the Release Documentation from the Customer Portal


Release PDFs have greater detail than Help

i.e. Errata Sheet


Previous Release Documentation

Previous Release

Documentation is still

available. Great for

when someone asks

Whats new since

version 13.0?


General context of this presentation


Videos of ANSYS Training Courses


Thank You

r15_mecheaseofuse_11th_feb.pdf

Documents

mesh methods

mesh sizes

meshing methods

assembly model assembly

mechanical tools

multiple cdb filesimport

preexisting models

new external model system