Download Lusas Example Manual PDF

TitleLusas Example Manual
File Size4.3 MB
Total Pages270
Table of Contents
                            Examples Manual (General Examples)
	Introduction
		Where do I start?
		About the examples
		Format of the examples
			Headings
			Menu commands
			Toolbar buttons
			User actions
			Filling-in dialogs
			Grey-boxed text
		Running LUSAS Modeller
		Creating a new model / Opening an existing model
		Creating a Model from the Supplied VBS Files
		The LUSAS Modeller Interface
	Linear Elastic Analysis of a Spanner
		Description
			Keywords
			Objectives
			Associated Files
		Modelling : Features
			Running LUSAS Modeller
			Creating a new model
			Modelling Geometry
			Defining a cubic spline
			Mirroring model information
			Using Groups
			Modelling Features Recap
		Modelling : Attributes
			Defining and Assigning Model Attributes
			Defining the Mesh
			Defining a regular Surface mesh
			Controlling mesh density
			Defining an irregular Surface mesh
			Defining the Thickness
			Assigning a Surface mesh and Thickness to the Jaws
			Assigning Surface mesh and Thickness to the Handle
			Defining the Material
			Visualising Model Attributes
			Manipulating layers
			Fleshing
			Supports
			Assigning the Supports
			Defining the Loading
			Assigning the Loading
			Saving the model
			Modelling Attributes Recap
		Running the Analysis
			If the analysis is successful...
			If the analysis fails...
			Rebuilding a Model
		Viewing the Results
			Selecting the results to be viewed
			Using Page Layout Mode
			Deformed Mesh Plot
			Principal Stress Vector Plots
			Creating New Windows
			Setting a Results Loadcase for the New Window
			Von Mises Stress Contour Plot
			Moving information on the annotation layer
			Marking Peak Values
			Creating a Slice Section of Results
			Selecting the Slice Data Results to be Plotted
	Calculating Section Properties of a Box Section
		Description
			Objectives
				Keywords
				Associated Files
		Modelling
			Running LUSAS Modeller
			Creating a new model
			Discussion
			Feature Geometry
			Merging Features
			Defining holes within a section
			Calculating Section Properties
	Nonlinear Analysis of a Concrete Beam
		Description
		Modelling
			Running LUSAS Modeller
			Creating a new model
			Defining the Geometry
			Defining Groups
			Defining the Mesh - Reinforcement Bars
			Defining the Mesh - Concrete
			Defining the Geometric Properties
			Defining the Material Properties
			Assigning Attributes to the Bars
			Assigning Attributes to the Concrete
			Making all groups visible
			Supports
			Loading
			Nonlinear Control
			Save the model
		Running the Analysis
			If the analysis is successful...
			If the analysis fails...
			Rebuilding a Model
		Viewing the Results
			Changing the Active Results Loadcase
			Deformed Shape
			Creating a Load versus Displacement Graph
			Using the Graph Wizard
			Maximum Principal Stress Contour Plots
			Viewing Crack Patterns
			Animating the Results
			Using the Animation Wizard
			Saving Animations
			Creating a slice section of results
			Adding Additional Results to a Graph
	Contact Analysis of a Lug
		Description : Linear Material
			Objectives
			Keywords
			Associated Files
		Modelling : Linear Material
			Running LUSAS Modeller
			Creating a new model
			Default Attribute Assignments
			Default Element Selection
			Default Geometric Properties
			Default Material Properties
			Defining the Geometry
			Mirroring the Lug
			Aligning Surface axes
			Supports
			Loading
			Saving the model
		Running the Analysis : Linear Material
			If the analysis is successful...
			If the analysis fails...
			Rebuilding a Model
		Viewing the Results : Linear Material
			Using Page Layout Mode
			Deformed Mesh Plot
			Von Mises Stress Contours
			Marking Peak Values
			Principal Stress Vectors
			Defining a Fatigue Spectrum
			Contouring Damage
			Contouring Cycles to Failure
			Changing the levels
		Description : Nonlinear Material
			Objectives
		Modelling : Nonlinear Material
			If the linear analysis was successful:
			Rebuilding model from a supplied file
			Changing the model description
			Feature Geometry
			Modifying the Line mesh divisions
			Using Groups
			Geometric properties of the pin
			Redisplay the lug
			Modifying the mesh
			Slidelines
			Supports and Loads
			Preventing features from merging together
			Moving the Pin to touch the Lug
			Nonlinear Analysis Control
			Saving the model
		Running the Analysis : Nonlinear Material
			If the analysis is successful...
			If the analysis fails...
		Viewing the Results : Nonlinear Material
			Making the Pin invisible
			Deformed Mesh Plot
			Equivalent Stress Contour Plots
			Changing the Active Results Loadcase
			Creating Animations
			Saving Animations
			Creating Graphs
			Slideline Results
	Linear Buckling Analysis of a Flat Plate
		Description
			Keywords
			Associated Files
		Modelling
			Running LUSAS Modeller
			Creating a new model
			Feature Geometry
			Meshing
			Geometric Properties
			Material Properties
			Supports
			Loading
			Eigenvalue Analysis Control
			Saving the model
		Running the Analysis
			If the analysis is successful...
			If the analysis fails...
			Rebuilding a Model
		Viewing the Results
			Deformed Mesh Plot
			Changing the Results Loadcase
			Printing the Buckling Load Factors
			Calculating the Critical Buckling Load
	Elasto-Plastic Analysis of a V-Notch
		Description
			Objectives
			Keywords
			Associated Files
			Discussion
			Analysis 1. Linear Material Analysis
			Analysis 2. Nonlinear Material Analysis
			Analysis 3. Contact Analysis with Linear Materials
			Analysis 4. Contact Analysis with Nonlinear Materials
		Modelling : Linear Material
			Running LUSAS Modeller
			Creating a new model
			Feature Geometry
			Meshing
			Geometric Properties
			Material Properties
			Support Conditions
			Loading
			Saving the model
		Running the Analysis : Linear Material
			If the analysis is successful...
			If the analysis fails...
			Rebuilding a Model
		Viewing the Results : Linear Material
			Deformed Mesh Plot
			Von Mises Stress Contours
			Changing the layer display order
		Modelling : Nonlinear Material
			Creating the starting model from a supplied file
			Change the model description
			Modifying the Material
			Nonlinear Analysis Control
			Save the model
		Running the Analysis : Nonlinear Material
			During the analysis…
			If the analysis is successful...
			If the analysis fails...
		Viewing the Results : Nonlinear Material
			Plotting Stress Contours
			Changing the Active Results Loadcase
			Yielded Material Plot
			Displacement History Graph
		Modelling : Contact Analysis (Linear Material)
			Creating the starting model from a supplied file
			Deassigning the Loading
			Modelling the Bolt
			Meshing the Bolt
			Modifying the mesh on the bolt
			Geometric Properties
			Material Properties
			Support Conditions
			Loading Conditions
			Slideline Definition
			Nonlinear Analysis Control
			Saving the model
		Running the Analysis : Contact Analysis (Linear Material)
			If the analysis is successful...
			If the analysis fails...
		Viewing the Results - Contact Analysis (Linear Material)
			Equivalent Stress Contour Plots
			Changing the Active Results Loadcase
		Modelling : Contact Analysis (Nonlinear Material)
			Creating the Model
			Creating the starting model from a supplied file
			Changing the model description
			Modifying the Geometry
			Nonlinear Analysis Control
			Save the model
		Running the Analysis : Contact Analysis (Nonlinear Material)
			If the analysis is successful...
			If the analysis fails...
		Viewing the Results : Contact Analysis (Nonlinear Material)
			Changing the Active Results Loadcase
			Preparing to animate the spread of yielded material
			Animating the results
			Saving Animations
	Modal Analysis of a Tuning Fork
		Description
			Keywords
			Associated Files
		Modelling
			Running LUSAS Modeller
			Creating a new model
			Feature Geometry
			Meshing
				Line meshes
				Surface mesh
			Geometric Properties
			Material Properties
			Support Conditions
			Loading
			Eigenvalue Analysis Control
			Saving the model
		Running the Analysis
			If the analysis is successful...
			If the analysis fails...
			Rebuilding a Model
		Viewing the Results
			Selecting a Results Loadcase
			Plotting Mode Shapes
			Creating Animations of Mode Shapes
			Saving Animations
			Printing Eigenvalue Results
			Interactive Modal Dynamics
			Using the Graph Wizard
			Plotting Dynamic Response for a Particular Frequency
			Selecting the IMD Results Loadcase
			Marking Peak Values
			Changing the results frequency
	Modal Response of a Sensor Casing
		Description
			Objectives
			Keywords
			Associated Files
		Modelling
			Running LUSAS Modeller
			Creating a new model
			Default assignments
			Automatic Mesh Assignment
			Automatic Geometry Assignment
			Automatic Material Assignment
			Feature Geometry
			Defining the sleeve of the sensor
			Defining the mesh for the sleeve
			Supports
			Eigenvalue Analysis Control
			Saving the model
		Running the Analysis
			If the analysis is successful...
			If the analysis fails...
			Rebuilding a Model
		Viewing the Results
			Selecting a Results Loadcase
			Displaying the 1st Mode Shape
			Stresses as Filled Contours
			Interactive Modal Dynamics
			Power Spectral Density definition
			Graph of PSD Stress Response
			PSD Input
	Thermal Analysis of a Pipe
		Description
			Objectives
				Keywords
				Associated Files
		Modelling
			Running LUSAS Modeller
			Creating a new model
			Feature Geometry
			Meshing
			Geometric Properties
			Material Properties
			Boundary Conditions
			Saving the model
		Running the Analysis
			If the analysis is successful...
			If the analysis fails...
			Rebuilding a Model
		Viewing the Results
			Temperature Contours
		Transient Thermal Analysis
			Creating a new model (if required)
			Setting up the Starting Conditions
			Setting up the Transient Analysis
			Saving the model
		Running the Analysis
		Viewing the Results
	Linear Analysis of a Composite Strip
		Description
			Objectives
			Keywords
			Associated Files
		Modelling : Shell Model
			Running LUSAS Modeller
			Creating a new model
			Defining the Geometry
			Meshing
			Checking Local Element Directions
			Changing the Element Directions
			Defining the Geometric Properties
			Defining the Composite Material Properties
			Defining the Composite Lay-up Arrangement
			Visualising the Composite Lay-up arrangement
			Assigning the Composite Lay-up Arrangement
			Checking the composite orientation
			Supports
			Defining Symmetry Support Conditions
			Loading
			Saving the model
		Running the Analysis
			If the analysis is successful...
			If the analysis fails...
			Rebuilding a Model
		Viewing the Results
			Plotting peak vertical displacements
			Stress contour plots for lamina
			Interlamina shear plots
		Modelling : Solid Model
			Rebuilding model from supplied file
			Changing the model description
			Converting the Model from Shells to Solids
			Deassigning the loading
			Deassigning the supports
			Deassigning the composite material arrangement
			Deassign the geometry
			Deassigning the Surface mesh
			Default mesh divisions
			Modifying the Geometry
			Meshing
			Assigning Composite Properties
			Loading
			Supports
			Save the model
		Running the Analysis
			If the analysis is successful...
			If the analysis fails...
			Rebuilding the Model
		Viewing the Results
			Plotting peak vertical displacements
			Stress contour plots for lamina
			Interlamina shear plots
			Defining Failure Strength
			Assigning Failure Strength
			Plotting contours of Failure Criteria
	Damage Analysis of a Composite Plate
		Description
			Objectives
				Keywords
				Associated Files
		Modelling
			Running LUSAS Modeller
			Creating a new model
			Feature Geometry
			Meshing
			Material Properties
			Defining the Composite Stack
			Assigning the Composite Stack
			Visualising lamina directions
			Supports
			Loading
			Analysis Control
			Saving the model
		Running the Analysis
			If the analysis is successful...
			If the analysis fails...
			Rebuilding a Model
		Viewing the Results
			Stress Contours
	Mixed-Mode Delamination
		Description
			Objectives
				Keywords
				Associated Files
		Modelling : Delamination Model
			Running LUSAS Modeller
			Creating a new model
			Defining the Geometry
			Meshing
			Interface Elements
			Supports
			Loading
			Final Geometry Manipulation
			Analysis Control
			Saving the model
		Running the Analysis
			If the analysis is successful...
			If the analysis fails...
			Rebuilding a Model
		Viewing the Results
			Plotting the deformed mesh
			Plotting the load deflection graph
			Stress contours
			Animating the effect of delamination growth
			Yield Plot
                        
Document Text Contents
Page 1

Examples Manual
LUSAS Version 14 : Issue 2

Page 2

LUSAS
Forge House, 66 High Street, Kingston upon Thames,

Surrey, KT1 1HN, United Kingdom


Tel: +44 (0)20 8541 1999
Fax +44 (0)20 8549 9399
Email: [email protected]
http://www.lusas.com


Distributors Worldwide

Page 135

Viewing the Results : Nonlinear Material

Displacement History Graph
To illustrate the nonlinear behaviour of the model a displacement history graph
showing the displacement of a node on the notch against the total applied load factor
is to be displayed.

Select the node on
the end of the
notch as shown.

Select this Node











The graph wizard provides a step-by-step means of selecting which results are to be
plotted on the X and Y axes of the graph. The X axis is always defined first.

Utilities
Graph Wizard…

Ensure the Time history option is selected and click the Next button.

Ensure the Nodal results button is selected for the X axis results and click the
Next button.

Select Displacement from the entity drop down list for the component DY. The
node number of the selected node will be shown. Click the Next button.

This defines the X axis results.

Select Named results and click the Next button.

From the drop down list select Total Load Factor data and click the Next button.

131

Page 136

Elasto-Plastic Analysis of a V-Notch

This defines the Y axis
results.

• Leave all title and axis
fields blank and click
the Finish button to
create the graph in a
new window and
display the values
used in an adjacent
table.

To see the
graph at the best
resolution enlarge the
window to a full size
view.



No
load

te. The graph shows the progressive softening of the structural response as the
is increased. The load value corresponding to the flat section represents the limit

of the load carrying capacity of the model.

Delete the graph window.

Modelling : Contact Analysis (Linear Material)
This section details the changes required to the linear material model from the first
part of the example to incorporate the geometry of a bolt which will be positioned
and loaded to prise the notch arms apart.

If the initial linear analysis was performed successfully open the model file
vnotch_linear.mdl saved after completing the first part of this example and

select No to not load a results file of the same name on top of this model.


File

Open...

• Enter the model file name as vnotch_contact and click the Save button.

Creating the starting model from a supplied file

Alternatively, start a new model file. If an existing model is open Modeller will
prompt for unsaved data to be saved before opening the new file.

• Enter the file name as vnotch_linear_contact

To create the model, select the file vnotch_linear_modelling.vbs located in the
\<LUS

File
Save As...

File
New…

File
Script >

Run Script... AS Installation Folder>\Examples\Modeller

directory.

132

Page 269

Viewing the Results

The extent of the delamination for the current loadcase can be clearly seen. The
delamination growth can be visualised by animating this plot through successive
loadcases.

To create an animation of the delamination growth.

Utilities
Animation Wizard...

Select Load History

Select Next

Select delamination.mys from the drop-down menu.

Select the All Loadcases check-box.

Select Finish



This completes the example.

































265

Page 270

Mixed-Mode Delamination





























266

Similer Documents