Week - 3 Drop test Challenge

• AIM

To find out the simulation of bending moment and stress on a solid plate with simplified cellphone using initial velocity card in a given model.

• EXPLANATION

• In this model first we need to define the materials for each part.
• cellphone as aluminium
• shell plate as aluminium
• solid plate as steel

	DENSITY	YOUNGS MODULUS	POISONS RATIO	YIELD STRENGTH	E-TAN
ALUMINIUM ALLOY	2.600e-04	2.800e+06	0.23
STEEL	7.850e-04	2.000e+06	0.3
ALUMINIUM	3.400e-04	2.600e+06	0.3	170	2.0

• In this model there are three parts and we need to create part ID and title. For each part we need to give section ID and material ID.
• In section cards we need to take 2 solids and 1 shell.
• In boundary I had taken spc set here we need to constrained the nodes of solid plate, So that the part will does not move anywhere.
• In this model i considered mobile as slave and shell plate as master.
• In this model i considered solid plate and shell plate as one part and mobile as another part in set part.
• In this model contact card used is automatic surface to surface.
• In this model initial velocity card is used.
• In database card ASCII output used is GLSTAT, MATSUM.
• In this model control card used is TERMINATION, AND ENERGY.

• PLOTS AND COUNTORS
• Global Internal energy

• The above graph shows the internal energy with respect to time. At time 1sec the internal energy is zero, at time 2sec the energy slightly increased to 0.2, at time 2 to 3 sec there is a sudden increase in internal energy to 1.2 jouls.

• ASCII OUTPUT

• GLSTAT
• MATSUM

The above graph shows the internal energy with respect to time. At time 1sec the internal energy is zero, At time 1 to 2sec there is a sudden increase in internal energy to 8.1 jouls, At time 2 to 4sec internal energy is slightly increased to 8.2.

• VELOCITY AT -10 MM/S

• VON MISES STRESS

• VELOCITY AT -15 MM/S

• VON MISES STRESS

• ASCII OUTPUT

• MATSUM

• The above graph shows the internal energy with respect to time. At time 1sec internal energy is zero, At time 1 to 2sec there is a sudden increase in internal energy to 10.1 jouls, At time 2 to 3sec there is a gradually decrease in energy to 8.4 jouls.

	VON MISES STRESS MAXIMUM	VON MISES STRESS MINIMUM	VON MISES STRESS SAFE
VELOCITY AT -10	1.697e+02	1.697e+01	1.188e+02
VELOCITY AT -15	1.525e+02	1.525e+01	1.068e+02

• CONCLUSION

In a given model at velocity of 10 and 15 m/s the stress values given in the above table and the safe stress values are represent for the given model and conditions only.