Optimization and flowchart control in the industry process using Abaqus, CATIA, Moldflow with ISIGHT integration

Transcription

1 Optimization and flowchart control in the industry process using Abaqus, CATIA, Moldflow with ISIGHT integration Ruben Guardia / Mariana Rollo 05 / 16 / 2012

2 Index 1-Objetive 2-Why Isight? 3- Study Case 4-Bondary conditions 5-Isight Model 6-Component 7-Result 8-Material Orientation

3 Objetive The goal of the present work is to show the implementation of an Isight optimization model. It includes an excel file, used in order to input data and extract results. It makes it easier for the user to introduce input data and obtain optimal design data.

4 Why Isight? 1- The continuous development of technology 2 - integrate different analysis models 3- Reduce Time 4- Reduce Cost Important for the management.

5 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

6 Model The material for the mirror has the following properties: Young s Modulus=5070 MPa Poisson Ratio = 0,47 Mass Density = 1,4 e-9 Ton/mm 3 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 3 Nervadura 4 Nervadura 1 Nervadura 2

7 Boundary Conditions The boundary conditions are: -Pinned (yellow circles) with U1=U2=U3=0 The loads (for the static step) are: -Pressure (red)

8 Isight model: The model is as shown below Isight Model

9 Components The function of each component is as follows: Runs the whole model 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

10 Excel File The excel file contains: Pressure to be applied Material properties Initial thickness

11 Excel Component The variables are selected from the excel file shown previously and then sent to the Abaqus Component

12 Selected variables for the Abaqus Analysis Abaqus Component

13 Optimization Component Element thicknesses were restricted to have certain specific values The Constraints are: Max_Stress < 245 MPa MAX_Displacement<3.1 mm 1 st Frequency > 450 Hz We aim to minimize thickness

14 Linked Parameters The parameters for the optimal design point are sent to the excel file

15 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.

16 Simcode Component 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

17 Calculator Component In the calculator component, the mean of the measured pressures is computed.

18 Optimal design point Results

19 Results in Excel File Optimal Reinforcements thicknesses

20 Results in Excel File Natural frequencies for the optimal point

21 Results in Excel File Stress and maximum displacement for the optimal point

22 Moldflow Results

23 FEM results- Stress

24 FEM results- First Natural Frequency

25 Isight results- Stress vs Thickness

26 Isight results- 1st Nat. Freq vs Thickness

27 Material Orientation * 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.

28 Material Orientation Fiber analysis and residual stresses Analysis isotropic materials without residual stresses

29 Material Orientation Fiber analysis and residual stresses Analysis isotropic materials without residual stresses

30 Thank you for your time Any Questions?