Tutorial 9: Ball to Plate Impact with Element Deletion Laurence Marks This tutorial accompanies covers a basic example of a ball being fired at an aluminium plate. Ann elemen element deletion criterion is defined and therefore the plate ruptures and allows the ball to pass through. It assumes some knowledge of Abaqus CAE – if there are concerns about some of the steps the content is covered in previous tutorials. Strategic Simulation & Analysis Ltd Southill Barn, Southill Business Park, Cornbury Park, Charlbury, Oxfordshire, OX7 3EW T. 01608 811777 F. 01608811770 [email protected] W. www.ssanalysis.co.uk but could have been created in almost any CAD system.co. Southill Business Park. 2. 01608 811777 F. This contains the two parts. 01608811770 E. Oxfordshire. Strategic Simulation & Analysis Ltd Southill Barn. Cornbury Park. the 3D solid ball and the 2D surface of the plate plate.uk W. Tutorial 9. 1. The geometry was created in Solidworks.sat. Geometry Import Import the part geometry.co. www.info@ssanalysis. ts.ssanalysis. Charlbury.uk 2 . Instance the parts in the Assembly module. OX7 3EW T. or simply in CAE. Southill Business Park. Define the material properties In this model the ball is considered to be a linear material with the modulus and density of steel.tonnes/mm3.co. www. (210e3 N/mm2 and 7. Cornbury Park. 3. Charlbury. Density = 2. 01608811770 E. Displacement a at failure is defined using the Suboption uboption button. Oxfordshire.5e-9.5e 2.co.uk 3 .uk W.ssanalysis. Strategic Simulation & Analysis Ltd Southill Barn.info@ssanalysis.. OX7 3EW T. nother fairly arbitrary set of material constants are defined for the element Another deletion criteria. Modulus = 70e3N/mm2.8e-9 tonnes/mm3) The plate has some pretty arbitrary aluminium aluminium(ish) properties defined.8e 7. 01608 811777 F. A simple bi-linear linear material plasticity definition is used. uk W. Cornbury Park. Oxfordshire.001s.co. A shell section is defined for the plate as shown below. Charlbury. 5. All defaults are taken. 4. Southill Business Park. The Step As usual the step is where the type of analysis and the parameters to be used are set up. This is an explicit analysis and the step duration is 0.co.uk 4 . OX7 3EW T. 01608811770 E. 01608 811777 F. Strategic Simulation & Analysis Ltd Southill Barn.ssanalysis. Define the sections and apply them to the parts A simple steel section is defined and appl applied ed to the ball. www.info@ssanalysis. In this case a global interaction property defining a coefficient of friction of 0. 6. 01608 811777 F. Strategic Simulation & Analysis Ltd Southill Barn. Charlbury.uk 5 . Oxfordshire.1 is used. www.info@ssanalysis. Southill Business Park. Contacts The “catch all” general contact with the default All* with self option provides all the contact settings ings necessary.uk W. Cornbury Park.ssanalysis. 01608811770 E. OX7 3EW T.co.co. Cornbury Park. The balll is given an initial velocity. 01608 811777 F. Strategic Simulation & Analysis Ltd Southill Barn. Charlbury. Boundary Conditions Fix the plate at the edge dge in all degrees of freedom.uk 6 . Define the Velocity: V3 = 40000mm/s The arrows indicate that an initial velocity has be been defined. Ensure the entire ball is selected and not just the outer surface.info@ssanalysis. OX7 3EW T. tthis his is best done using the assembly display options ions dialog to hide the plate plate. Oxfordshire. predefined field > mechan mechanical > velocity.uk W. 7.co. www. Southill Business Park.co.ssanalysis. 01608811770 E. www. OX7 3EW T. Cornbury Park.uk 7 . 8. Strategic Simulation & Analysis Ltd Southill Barn.uk W. The results also animate in a more pleasing manner if 50 or even 100 output steps eps are defined. Create a job and submit it The usual process is used to create a job and submit it. Oxfordshire.co. Number of steps written into the odb Select the status variable for correct plotting of element deletion 9. 01608811770 E. Charlbury. Southill Business Park. Output Requests By default most outputs are provided – but to obtain post processing plots with the element deletion represented properly the user needs to select the “status” output [email protected]. 01608 811777 F. 01608811770 E. Charlbury. Southill Business Park.info@ssanalysis. Results post processing The default setting in the CAE post processing section plot plots the model mod with deleted elements omitted.ssanalysis. showing how the plate ruptures as it is impacted by the ball.uk 8 .co. Cornbury Park. 01608 811777 F. Oxfordshire. OX7 3EW T. Strategic Simulation & Analysis Ltd Southill Barn. www. 10.co.uk W..