RD-3560: Bottle Drop

This tutorial demonstrates how to simulate a Bottle Drop Test containing water and air. The objective is to evaluate the diffusivity of water and air in the bottle on drop.

rd3560_bottle_13

Exercise

Step 1: Load the RADIOSS User Profile

1.	Launch HyperMesh Desktop.

2.	From the Preferences menu, select the User Profiles or click the icon in toolbar.

3.	Select RADIOSS (Block140) and click OK.

Step 2: Load the bottle.hm file

1.	Click the Open Model icon to open the bottle.hm file you saved to your working directory from the radioss.zip file. Refer to Accessing the Model Files.

2.	Click Open. The model loads into the graphics area.

Step 3: Define Materials for Air and Water

1.	In the Model browser, right-click and select Create > Material. The Entity Editor is displayed below the Model browser.

2.	For Name, enter Air.

3.	For Card Image, select M37_BIPHAS and click Yes to confirm.

4.	Input the values, as shown below. Remember to select ALE under ALE CFD Formulation.

rd3560_air_14

5.	Similarly create a material with the name Water using Steps 3.1 to 3.4.

6.	Input the values, as shown below.

rd3560_water_14

Step 4: Load stress-strain curve from a file

To create the material for bottle (plastic) you need a stress strain curve that is available in a file from test.

1.	Click XYPlots > Create > Plots.

2.	Enter the plot= name as stress-strain and click create plot > return.

3.	Click XYPlots > Edit > Curves.

4.	Toggle the create radio button.

5.	Click the load button to load the stressstrain_curve.txt file.

6.	With the x radio button selected, click the green + to the right of comp= and set it to x.

7.	Select the y radio button, click the green + to the right of comp= and set it to y.

8.	Click create > return.

rd3560_load_13

9.	In the Model browser, click on curve.

10.	In the Entity Editor, rename it as stress_strain. The data in the file is loaded as a curve in HyperMesh.

Step 5: Define Material for Bottle

1.	In the Model browser, right-click and select Create > Material. The Entity Editor is displayed below the Model browser.

2.	For Name, enter Bottle.

3.	For Card Image, select M36_PLAS_TAB and click Yes to confirm.

4.	Input the values, as shown below:

rd3560_plas_tab_14

Select the stress-strain curve created for fct_ID1.

Step 6: Define property and assign material for Air

1.	In the Model browser, right-click and select Create > Property.

2.	For Name, enter Air.

3.	For Card Image, select P14_SOLID and click Yes to confirm.

4.	Enter parameters, as shown below.

rd3560_air_property_13

5.	In the Model browser, click on the air component.

6.	Select material and property created for Air in the Entity Editor.

Step 7: Define property and assign material for Water

1.	In the Model browser, right-click and select Create > Property.

2.	For Name, enter Water.

3.	For Card Image, select P14_SOLID and click Yes to confirm.

4.	Enter parameters, as shown below.

rd3560_water_property_13

5.	In the Model browser, click on the water component.

6.	Select material and property created for Water in the Entity Editor.

Step 8: Define property and assign material for Bottle

1.	In the Model browser, right-click and select Create > Property.

2.	For Name, enter Bottle.

3.	For Card Image, select P1_SHELL.

4.	Enter parameters, as shown below.

N = 5

Thick = 0.3

5.	In the Model browser, click on the bottle component.

6.	Select material and property created for Bottle in the Entity Editor.

Step 9: Define an Interface between Bottle and Water

1.	In the Model browser, right-click and select Create > Set.

2.	For Name, enter ALE_Surf.

3.	Set Card Image to SURF_EXT and click Yes to confirm.

4.	For Entity IDs, set the entity selector to Components.

5.	Click Components and select water and air.

6.	Click OK to complete the selection.

rd3560_ale_surf_13

7.	In the Model browser, right-click and select Create > Contact.

8.	For Name, enter Bottle_Water, and for Card Image, select TYPE1.

9.	For ls2(S) (slave entity), set the selector to Set.

10.	In the Select Set dialog, select ALE_surf and click OK.

11.	For ls1(M) (master entity), set the selector to Components.

12.	In the Select Components dialog, select Bottle and click OK.

rd3560_bottle_water_13

Step 10: Create Initial Velocity for Bottle

1.	Click Tools > BCs Manager.

2.	Set the Select type to Initial Velocity.

3.	For Name, enter Bottle.

4.	Click Parts and bottle.

5.	Set the Vz velocity to -5468.200 (Negative direction indicating opposite to Global Z-axis).

6.	Click Create to create the imposed velocity boundary condition.

rd3560_parts_bottle_14

Step 11: Create Initial Velocity for Water and Air

1.	Set the Select type to Initial Velocity.

2.	For Name, enter Liquid.

3.	Click Parts and select water and air.

4.	Set the Vz velocity to -5468.200 (Negative direction indicating opposite to Global Z-axis).

5.	Click Create to create the imposed velocity boundary condition.

6.	Select the Liquid initial velocity in the table, right-click and select Card Edit.

7.	Change the Type to T+G and click return to complete the definition.

rd3560_liquid

Step 12: Create Rigid Wall

1.	In the graphics area, press the F8 key, and create the node at the coordinates: X= 0, Y= 0, Z= -50 and create node.

2.	In the Model browser, right-click and select Create > Rigid Wall.

3.	For Name, enter GROUND with Geometry type as Infinite plane.

4.	Select node created in Step 12.1 as base node and make sure the normal vector is in the z-direction, as shown below.

5.	Set the d to 250.0.

rd3560_ground_14 \

Step 13: Create output requests and control cards

1.	Launch the HyperMesh Solver browser from View > Browsers > HyperMesh > Solver.

2.	Right-click in the Solver browser general area to create the cards, shown below with the given values for each parameter:

Keyword Type	Keyword	Parameter	Parameter Value
CONTROL CARDS	TITLE	Status	[Checked]
CONTROL CARDS	TITLE	TITLE	Bottle_drop
CONTROL CARDS	MEMORY	Status	[Checked]
CONTROL CARDS	MEMORY	NMOTS	40000
CONTROL CARDS	SPMD	Status	[Checked]
CONTROL CARDS	IOFLAG	Status	[Checked]
CONTROL CARDS	ANALY	Status	[Checked]
ALE-CFD-SPH	ALE_CFD_SPH_CARD	Status	[Checked]
ALE-CFD-SPH	ALE_CFD_SPH_CARD	ALE_Grid_Velocity	[Checked –]
ENGINE KEYWORDS	RUN	Status	[Checked]
ENGINE KEYWORDS	RUN	Tstop	1.5e-2
ENGINE KEYWORDS	PARITH	Status	[Checked]
ENGINE KEYWORDS	PARITH	Keyword2	OFF
ENGINE KEYWORDS	PRINT	Status	[Checked]
ENGINE KEYWORDS	PRINT	N_Print	-1000
ENGINE KEYWORDS	TFILE	Status	[Checked]
ENGINE KEYWORDS	TFILE	Time Frequency	0.00015
ENGINE KEYWORDS	ANIM > ANIM/ELEM	Status	[Checked]
ENGINE KEYWORDS	ANIM > ANIM/ELEM	VONM	[Checked]
ENGINE KEYWORDS	ANIM > ANIM/ELEM	PRES	[Checked]
ENGINE KEYWORDS	ANIM > ANIM/DT	Status	[Checked]
ENGINE KEYWORDS	ANIM > ANIM/DT	Tstart	0
ENGINE KEYWORDS	ANIM > ANIM/DT	Tfreq	1.5e-3
ENGINE KEYWORDS	DT > DT	Status	[Checked]
ENGINE KEYWORDS	DT > DT	Tscale	0.5
ENGINE KEYWORDS	DT > DT	Tmin	0.0

Step 14: Export the model

1.	Click File > Export Solver Deck or click the Export Solver Deck icon .

2.	For File:, click the folder icon and navigate to the destination directory where you want to export to.

3.	For Name, enter bottle and click Save.

4.	Click the downward-pointing arrows next to Export options to expand the panel.

5.	Click Merge starter and engine file to export all the data in one file (or export separately).

6.	Click Export to export solver deck.

Step 15: Run the solver using RADIOSS Manager

1.	Go to Start > Programs > Altair HyperWorks 14.0 > RADIOSS.

2.	For Input file, browse to the exercise folder and select the file bottle_0000.rad.

rd3560_run_mgr_13

Step 16 (Optional): View the results in HyperView

The exercise is complete. Save your work to a HyperMesh file.

rd3560_results_13