Assignment 3-2D Element Formulation Challenge
1.Using the crash beam file from the previous assignment, change the run time to 55 ms.
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2. Change the number of animation steps during simulation to a minimum of 25 and maximum of 60.
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3. Run the base simulation without any modification to element properties
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4. At the end of the simulation, do the energy error and mass error checks and determine whether results would be acceptable.
Ans. All the values were not extending the desired value 5 Hence we can say that the errors are acceptable
5. If acceptable, Plot rigid wall forces, internal energy, hourglass energy, contact energy, total energy of the simulations.
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6. Change all the shell elements properties to recommended properties, save this as separate, rad files and run the simulation.
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8. Create a brief report comparing all the results from steps 5 and 6 for both simulations.
Ans. Sim2 Sim 1
CONTACT SORTING.............: .1531E+01 6.66 % CONTACT SORTING.............: .3312E+01 8.64 %
CONTACT FORCES..............: .2734E+01 11.90 % CONTACT FORCES..............: .5547E+01 14.47 %
ELEMENT FORCES..............: .1456E+02 63.36 % ELEMENT FORCES..............: .2147E+02 55.99 %
KINEMATIC COND..............: .5625E+00 2.45 % KINEMATIC COND..............: .1234E+01 3.22 %
INTEGRATION.................: .3281E+00 1.43 % INTEGRATION.................: .7188E+00 1.87 %
ASSEMBLING..................: .6719E+00 2.92 % ASSEMBLING..................: .1531E+01 3.99 %
OTHERS (including I/O)......: .2594E+01 11.28 % OTHERS (including I/O)......: .4531E+01 11.82 %
TOTAL.......................: .2298E+02 100.00 % TOTAL.......................: .3834E+02 100.00 %
9. Comment whether there is any change in the results and why there is any change in the result.
Ans. The total resulatant forces are less compared to sim 1 as the elemntal properties were not clear in the sim 1 according to the standards