Dynaform BSE training tutorial 2

Click File menu and select Save As … See Figure 1.. Click BSE menu and select Preparation See Figure 3.. Click the Material button to pop up the Define Sheet dialog box See Figure 14 4.

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DYNAFORM 5.9.2 Training Tutorial

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Descriptions for quick formability analysis

of part by using BSE Mstep

Formability Analysis

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1 Start Dynaform 5.9.2

2 Click File menu and select Save As … (See Figure 1)

3 Enter MSTEP_model2_(user name)_(date).df as the file name (See

Figure 2)

4 Click Save to save the database

Figure 1

Figure 2

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1 Click BSE menu and select Preparation (See Figure 3)

2 The New BSE Project interface will display Click OK to access the

Preparation dialog box （See Figure 4)

3 Click File-> Import option The format of file is NASTRAN *.dat

4 Select file location: …/Tutorial2_Formability_analysis

5 Select file: MSTEP_model2.dat （See Figure 5）

6 Click OK to import the part geometry

7 Click Exit to exit the Tool Preparation (BSE) dialog box

8 The imported model is shown in Figure 6 There are two parts in the

database: C001V000 and P2

II Import Geometry

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Figure 5

II Import Geometry

Figure 3

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II Import Geometry

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1 Click Parts

2 Select Edit (See Figure 7)

3 Double click the Name edit box to select the part

name C001V000

4 Type in the new name: Input BLANK in the edit box

5 Click Modify

6 Select part name: P2

7 Type in the new name: Input HOLDER in the Name

edit box

8 Click Modify

9 Click OK to exit Edit Part dialog box

III Rename the Parts

Figure 7

Figure 8 Figure 9

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1 Select BSE Preparation -> Mesh menu

2 Click Boundary Display icon（the third icon in the first row）(See Figure10)

3 Toggle off Elements and Node

4 Click (free rotation) to rotate the model

5 Click (clear highlight) to make sure that each part only has one complete

boundary line

6 Click to display the model in isometric view

7 Click Auto Normal icon (the first icon in the first row)

8 Select CURSOR PICK PART

9 Move the cursor to select an element on the model (See Figure 11)

10 Select No to reverse the normal direction (See Figure 12) Change the normal directions of two part mesh to the +Z axis direction

IV Check and Repair Mesh

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IV Check and Repair Mesh

Figure 11

Figure 12

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1 Click BSE PreparationMSTEP to enter the MSTEP module

2 The program has automatically added the imported model into Sheet when the

model is imported previously The green Sheet button indicates the definition

has done (See Figure 13)

3 Click the Material button to pop up the Define Sheet dialog box (See Figure 14)

4 Click Remove Part button to delete the HOLDER part from the list (See Figure

15)

5 Click the BLANKMAT button to display the Material window, and click Material

Library to open the material library (See Figure 17)

6 Select DQSK 36 material and click OK to exit the material library (See Figure

18) Click OK to use the default material parameters (See Figure 19) After

clicking OK to complete the material definition, the word BLANKMAT is

changed to DQSK, which indicates that the material parameter definition is

completed

7 Define the sheet Thickness:0.9 mm (See Figure 20)

8 Click OK to return to MSTEP window

V Formability Quick Analysis（Mstep setup）

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Figure 17 Figure 16

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Continued…

9 Click Blank Holder button in the MSTEP window to define the binder ring part

(See Figure 21)

10 Click Define Tool button in the displayed Preparation window (See Figure 22)

11 Select HOLDER and click OK to exit (See Figure 23)

12 Click Exit to exit Define Tool window (See Figure 24)

13 Return to MSTEP window The color of Blank Holder changes from blue to green,

which indicates that the binder ring definition is completed (See Figure 25) Do not

close the MSTEP window

14 Then, click Advanced -> Constraint button to define constraints (See Figure 26)

15 Select Advanced options in the displayed Constraints window and select XZ

SYMMETRY in Type, which means that the part is symmetrical along XZ plane

(See Figure 27)

16 Click Create button and click OK to accept the constraint No 1 (See Figure 28)

17 Click the second type Drag Window in the displayed Select Node window (See

Figure 29) Switch to the top view and select the top row of nodes (See Figure 30)

After selection, the defined constraint group 1 has been added to the Constraint

list box (See Figure 31) Click OK to exit constraint definition

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Figure 24

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Figure 30

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Continued…

19 Select Accurate as the Analysis Method in the displayed MSTEP Advanced

window to define the simulation parameters (See Figure 32)

Note: In MSTEP module, two solver options are provided: Accurate and Fast The

Accurate option enables advanced simulation which considers blank holder pressure, pad

pressure and drawbead infection, together with material parameter and plasticity behavior

of material It leads to more accurate calculation result The Fast option facilitates quick

and effectively blank unfolding There is no consideration of the effect of the above

mentioned parameters

21 Type in the Binder Hold Force: 500000 Newton (50 Ton) Click OK to exit the

Mstep Advanced window

22 Click Run button to run MSTEP solver (See Figure 33)

23 MSTEP solver starts to run (See Figure 34)

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Figure 34

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After the MSTEP calculation is completed, DYNAFORM will automatically read in

the computed sheet blank unfold outline and add it to a new part, as shown in

Figure 35

VI Start up Post-process and Analyze

Simulation Result

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Select PostProcess menu to start up ETA/Post-Processor 1.8.1 Open the dynain

file just generated by the MSTEP solver and click FLD Select the Middle Layer

and click PLOT There is a large gray region on part as shown in Figure 36, which

indicates insufficient deformation, so the drawbead is required to be added

Figure 36

VI Start up Post-process and Analyze

Simulation Result

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1 Close ETA/Post-Processor 1.8.1 and return to Dynaform

2 Click FileImport to import drawbead model MSTEP_model2_beadline.igs (See

Figure 37)

3 Select BSEMSTEP

4 Click Bead to define drawbead (See Figure 38)

5 Click Select button in the displayed drawbead window to select the Drawbead

line (See Figure 39 and Figure 40)

6 Click Apply to create the new drawbead (See Figure 41)

7 Click the Select button next to Part in Lock tool and select Holder (See Figure 42 and Figure 43) Confirm the drawbead project onto the rigid body The program automatically calculates the Full Lock to be 478.314 Newton according to the

material parameters (See Figure 44)

8 The Drawbd 1 and Drawbd 2 have been added to the Drawbead list box (See

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Figure 37

VII Quick Formability Analysis after

Adding Drawbead

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Adding Drawbead

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Select two drawbeads

Figure 40

Adding Drawbead

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Adding Drawbead

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Figure 43

Figure 44

Adding Drawbead

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Continued…

10 Click Exit to exit Drawbead definition window

11 Click Run to start up Mstep solver.

Adding Drawbead

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After the MSTEP calculation is completed, DYNAFORM will automatically read in

the computed sheet blank unfold outline and add it to a new part, as shown in

Figure 45 The brown closed line indicates the sheet blank unfold outline after

adding the drawbead Compared with the unfold line ((blue) with binder hold force considered only, the blank size is smaller

VIII Start up Post-process and Analyze

Simulation Result

Figure 45

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Select PostProcess menu to start up ETA/Post-Processor 1.8.1 Open the dynain

file just generated by the MSTEP solver and click FLD Select the Middle Layer and click PLOT As shown in Figure 46, the part after adding the drawbead is deformed sufficiently and basically meets the forming requirements

VIII Start up Post-process and Analyze

Simulation Result

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