optimization and flowchart control in the industry process ... · optimization and flowchart...
TRANSCRIPT
Optimization and flowchart control in
the industry process using
Abaqus, CATIA, Moldflow with ISIGHT
integration
Ruben Guardia / Mariana Rollo
05 / 16 / 2012
Index
1-Objetive
2-Why Isight ?
3- Study Case
4-Bondary conditions
5-Isight Model
6-Component
8-Material Orientation
7-Result
Objetive
The goal of the present work is to show the implementation of anIsight optimization model. It includes an excel file, used in order to inputdata and extract results. It makes it easier for the user to introduce inputdata and obtain optimal design data.
Why Isight?
1- The continuous development of technology
2 - integrate different analysis models
3- Reduce Time
4- Reduce Cost – Important for the management.
Study Case
The piece is part of the support of a driving mirror. It was analyzed in different ways: 1-Natural Frequencies analysis 2-A static general procedure 3-Injection Simulation
Model
The material for the mirror has the following properties:
Young´s Modulus=5070 MPa
Poisson Ratio = 0,47Mass Density = 1,4 e-9 Ton/mm3
The thickness of the reinforcements in red (“Nervadura 3”), yellow(“Nervadura 2”), blue (“Nervadura 1”)and light green (“Nervadura 4”)
Will be a part of the optimization process
Nervadura 1 Nervadura 2
Nervadura 4
Nervadura 3
Boundary
Conditions
The boundary conditions are:
-Pinned (yellow circles) with U1=U2=U3=0
The loads (for the static step) are:
-Pressure (red)
Isight Model
Isight model: The model is as shown below
Components
Runs the whole model
The function of each component is as follows:
Runs the Optimization for the Abaqus model
Feeds the input data
Runs the Abaqus model
Saves the optimization results
Runs a MOLDFLOW analysis in order to get injection parameters for the optimal design
Gets the medium pressure value during the injection for a test point
Excel File
The excel file contains:
Initial thickness
Material properties
Pressure to be applied
Excel
Component
The variables are selected from the excel file shown previously and then sent to the Abaqus Component
Abaqus
Component
Selected variables for the Abaqus Analysis
Optimization
Component
Element thicknesses were restricted to have certain specific values
The Constraints are: Max_Stress < 245 MPaMAX_Displacement<3.1 mm 1st Frequency > 450 Hz
We aim to minimize thickness
Linked
Parameters
The parameters for the optimal design point are sent to the excel file
Simcode
Component
The optimal thicknesses are used to run a Moldflow analysis in order to evaluate the injection process for certain given parameters. For this purpose, a SIMCODE component who reads a .vbs script file made in Moldflow was used.
From the Moldflow analysis a table is pulled out with the pressure in a sample point with respect to time. This table is then sent to the calculator component
Simcode
Component
Calculator
Component
In the calculator component, the mean of the measured pressures is computed.
Results
Optimal design point
Results in
Excel File
Optimal Reinforcements thicknesses
Results in
Excel File
Natural frequencies for the optimal point
Results in
Excel File
Stress and maximum displacement for the optimal point
Moldflow
Results
FEM results-
Stress
FEM results- First
Natural Frequency
Isight results-
Stress vs Thickness
Isight results-
1st Nat. Freq vs
Thickness
* The shape and thickness of the part to be injected, the number of injection points, the pressure with which it is injected, the temperature at which the material enters and the injection method used. All these and other factors affecting the orientation of the material.
*When we speak of orientation of the material we have to talk about the properties and these can be inter isotropic or orthotropic.
Material Orientation
Fiber analysis and residual stressesAnalysis isotropic materials without residual stresses
Material Orientation
Fiber analysis and residual stressesAnalysis isotropic materials without residual stresses
Material Orientation
Thank you for your time
Any Questions?