CDS3.0 Composite Design and Simulation Software

© 2010 University of Delaware

All rights reserved

Composite Design and Simulation Software

Version 3.0

John J. Tierney

Center for Composite Materials

University of Delaware, Newark, DE 19716, U.S.A

© 2010 University of Delaware All rights reserved

© 2009 University of Delaware, All rights reserved © University of Delaware, All Rights Reserved 2008 © University of Delaware, All Rights Reserved 2010 John. J. Tierney

CMAP

LAM3D

LAMPAT

MICRO

PIRSA

CAST

CDS Suite

CDS 1.0 CDS2.0

CDS v3.0

Evolution of Analytical Code Development at CCM

DOS Based Programming

1989

Initial GUI Development

1999

Unified Environment

Structural and Process Simulation

2008

Parametric Modeling

Expanded Functionality

2010

The CDS: Composite Design and Simulation Suite is a continuously evolving

environment for real time design and analysis of composite laminates

Consider CDS as an advanced scientific calculator for

composites with additional capabilities for processing and loading

laminated plates and tube structures

Useful if you have a design problem with a wide range of usable

materials and problems without a full set of material property

inputs

Web Interface

1997


Composite Design and Simulation Software: Core Solvers

Materials Database Management & Generation (CDS-MAT, DART, MAT162)

Cure Kinetics (PIRSA4)

Moisture Diffusion (MDS)

Thermal Modeling (COMPROSOFT, PIRSA4 CCDS, FEA IMPORT)

SLS Viscoelastic (PIRSA, COMPROSOFT)

Crystallization Kinetics (COMPROSOFT)

Micromechanics (MICRO,MICRO2, TEXCAD)

Thin Plate Mechanics (CMAP)

Thick Section Mechanics (LAM3D, LAM3DNL)

Quality Development (PIRSA, COMPROSOFT)

Cylinder Design (CCDS)

Progressive Failure (CMAP,LAM3D,LAMPAT)

Specialized Codes (CST)


CDS3.0 Available Online


Downloading CDS3.0


CDS Version Releases

Demo Version

Example Materials Only

Thin Laminates Only

Unidirectional Micromechanics

No Load/Save Capabilities

Simple Plate Heat Transfer w/limits, Time Domain only

Academic Release

Full Material Control

Thin Laminates Only

Unidirectional Micromechanics

Load/Save Available

Simple Plate Heat Transfer w/limits, Time Domain only

Standard Release


Thin and Thick Laminates

Full Micromechanics

Load/Save Available

Plate and ATP Heat Transfer Time and Length Domain

Moisture Analysis

Cure Kinetics

ATP Processing

Progressive Failure Analysis

FEA Export

Professional Release (ARL)


Thin, Thick and Cylindrical Structures

Full Micromechanics

Load/Save Available

Plate and ATP Heat Transfer Time and Length Domain

Moisture Analysis

Cure Kinetics

ATP Processing

FEA Export

Progressive Failure Analysis

Custom Analysis Available CST Modules


Starting CDS3.0

• When CDS3 is started this window

will first appear

• Upon first use, click the request key

button and fill out the form and select

the version requested. Additional

comments can be added on the right

• Click the “Save Request to File” to

save the license request to a file on

your PC.

• Click “Close” to close the license key

request form.

• You can still click “Start” to begin

using CDS3 but it will only work in

demonstration mode

• Email the key request file to

[email protected]

• A license key is emailed back and

then restart the software and click the

“Import Key” button.

• The software will start in the

appropriate mode

mailto:[email protected]


CDS v3.0 Interface

GUI divided into

three sections

The Menu Tree Input area

Results area


The Menu Tree

• The menu tree is where all user data is created, loaded and

saved.

• Right clicking on any existing entity will bring up a series of

options such as new, load, save, export etc.

• The right click menu adapts to the selection clicked.

• The user can click on one or more entities which will also

change the right click options available. For example right

clicking on a list of materials (selected with the shift key) and

selecting the duplicate function will duplicate these materials.

Right clicking on the Materials entry will duplicate the entire set

of materials.

• This functionality is common throughout the CDS3.0 menu

environment allowing easy creation of materials, laminas,

laminates etc.

• You can select multiple items in a row by holding the shift key

or discrete items with the control key pressed when selecting

items.

• Note that you can only multi select items on the same level and

sub menu.


Material Database Input: Single Material View • Over 170 material properties with

additional source Information

• User can modify properties within an

analysis without loss of data

• Each material includes attachment of source, user and date information


Temperature Dependent Material Input

• Right clicking on the material input table allows the user to assign temperature dependent

properties to any single property.

• Temperature dependent material properties are available for mechanical, physical and

transport properties.


Material Database Input: Selected Materials View • Select “Materials” on the menu tree to look at all materials.

• Hold the <Shift> key while selecting to look at specific materials


Material Properties Summary: Ashby Chart

• Click the “Materials Summary” Tab to look at various properties with an Ashby or bar chart

• Use the cursor to identify each material

• Select which material to view using these drop down options

• You can compare any property directly with any other property


Material Properties Summary: Bar Chart

• Up to three material properties can be compared with the bar chart

• Use the <shift> select on the menu tree to look at specific properties

• The table on the right shows the properties of the selected materials

• The material selected with the cursor is highlighted on this table


Lamina Input: Micromechanics

• Models include continuous and short fiber micromechanics, Filled Resin Systems, SMC and

particulate systems

• Right click table to add, change or fill materials

• Use the materials table to edit properties directly (note that this edits material properties stored

in the database.


Predicted Lamina Properties

• Predicted lamina properties include axial and stiffness, Poisson’s ratio, thermal expansion for:

• Continuous Fiber Laminas

• Planer Fiber Reinforcement (SMC)

• Axial Fiber Reinforcement (Extrude)

• Particulate Reinforcement

• Platelet Reinforcement

• Porous Composite

• Random Fiber Composite

• 3D Fiber Reinforcement (General)


Predicted Lamina Properties

• Lamina properties are predicted in real time and can be viewed in a table, Ashby chart or bar

graph

• Lamina properties can be used in laminates or saved as new materials

• Select which material to view using these drop down options


Stacking Input

• Clicking on the Stacking Tab (or selecting a laminate in the menu tree) opens the Stacking

section were laminates are created and edited. Like the materials section the user can view

a single laminate in standard view or observe and edit laminates in the global table view.

• The standard view table includes a table showing the current laminate and offers a number

of right click options


Stacking <Right Click> Options

Populate Laminate: Use this function to quickly populate a laminate by populating a laminate with the

selected Number of plies. The best approach is to first select a material (by right clicking the table) and

assigning it to the first ply. Then use the populate laminate function to add N plies to the laminate.

Assign Material: Use this function to assign a material to a ply. The materials are filtered by type in the

selection for ease of selection.

Add Ply (Plies): The selected ply (or plies by selecting and holding the shift key) on the table can be

added to the laminate to quickly add plies.

Delete Ply (Plies): The selected ply (or plies by selecting and holding the shift key) on the table are

deleted. If all plies are deleted then the laminate resets to 1 ply and asks for a material to be selected.

Symmetry: Right clicking this option makes the laminate symmetric. If one ply is selected then the

entire laminate is made symmetric. If two or more plies are selected (using the shift key) then those plies

are made symmetric

Common Ply Orientations: Depending on the number of plies in the laminate the user can select a

series of common laminate orientations to populate the laminate. The common angle input at the top of

the table is used to assign less common +/- orientations to this function. Note the laminate is populated

with integer cells of these common ply orientations and the laminate may not be symmetric after picking

this function. (Click the Symmetry button to restore symmetry after this operation)

Fill Column: Fills the selected column with data from the row selected. This works for all columns

including material selection.

Invert Selection: If one ply is selected then the laminate is inverted, if more than one ply is selected

then the selection is inverted.


Stacking Input: Multiple Laminates

• Click “Laminates” on the menu tree to look at all laminate in CDS3.0

• Allows user to quickly view, compare and edit multiple laminates


Predicted Laminate Properties

• All laminate properties are predicted in real time

• Properties include average density, stiffness, Poisson’s ratio, shear modulus, thermal expansion


Predicted Laminate Properties

• Compare up to three predicted properties from

all laminates

• View ABD, abcd matrix for selected laminates

• Use the <Shift> select option to view specific

laminates


CDS Analysis Modules

• Thin Section

• Thick Section

• Thick Cylinder

• Impact Model

• 1D Thermal • Cylinder Transient Solution

• Discontinuous Tile

• Moisture • Compliant Interlayer • Automated Tape Placement


1D Simple Plate Thermal Analysis Input

• Prescribe process inputs: velocity, time steps, initial temperature conditions

• Top and bottom boundary conditions, time, temperature and boundary conditions

• Right click boundary condition tables to change rate, and heat transfer coefficients


1D Thermal Solution

• Boundary Condition Summary • Temperatures over time

• Through thickness temperatures • Time-Temperature-Thickness Contours


Cylinder Transient Analysis

• Prescribe cylinder dimensions, initial temperature conditions, number of loading

cycles

• Right click boundary condition tables to change rate, and heat transfer coefficients


Transient Thermal Response: Cylinder Solution

• Boundary Condition Summary • Temperatures over time

• Through thickness temperatures • Time-Temperature-Thickness Contours


Laminate Response

• Laminate Principle and

Global Stresses and

Strains, Displacements

and factors of safety for

flat plates and cylinders.

• Right click any outputs

to save data to the

clipboard of directly to

Microsoft Excel


Fastener Model-Thin Plate Bending Response

• The thin plate bending wave model can predict the static equivalent forces,

bending moments and resultant bolt pullout and shear stresses of a ballistic impact

on a plate.

• Model inputs include plate size and thickness. plate properties and boundary

conditions, number of bolts, bolt properties and dimensions. projectile inputs are

mass, dimension and velocity.


Fastener Model-Thin Plate Bending Response

• This model is used to identify critical parameters for optimal design of a bolted

plate under high velocity impact.


Fastener Design-Parametric Output

• Compare effect of any model input on static equivalent forces and stresses


Experiments: Built in Data Reduction

Quickly generate material properties with curve

fitting and Statistics


Source Information

• Material source information can be stored and assigned to any material within the

software


Opening and Saving Data in CDS3.0

• Data is saved and loaded to the CDS Menu by right

clicking any item on the tree

• All files are saved to text (tab delimited) spreadsheet

format irrespective of what data is saved.

• When opening an spreadsheet the user is presented

with the contents of the file

• The user can then select some or all of the contents

to load into the current analysis.

• These files are generated locally so all propriety

content is protected.

• Databases have associative hierarchy, i.e. if you

save a laminate all materials within the laminate are

attached and stored for retrieval


CDS3.0 Built in Searchable Help • Help is available on the top

right of CDS3.0


CDS3.0 Online Help and Pdf Files

www.ccm.udel.edu/CDS


Summary

• In summary, CDS version 3.0 is an advanced software application for designing and analyzing

composite structures.

• CDS3.0 has built in database functionality, parametric analysis features and multi analysis

connectivity, i.e. thermal and structural analysis coupling.

• The new menu tree environment can be used to quickly store and retrieve data generated within

the software.

• CDS3.0 comes with example materials, laminates and analyses to quickly get started

• The new “Experiments” module provides built in data reduction capabilities directly within

CDS3

• Right clicking any data set saves to the clipboard or directly to Microsoft Excel.

• With this software, an designer engineer, process engineer or student can quickly determine

the effective properties and response of composite laminates, conduct micromechanics

calculations, as well as virtual process simulation and optimization.

Documents

CDS3.0 Composite Design and Simulation Software