1. S1-1 ADM703, Section 1, August 2005 Copyright  2005 MSC.Software Corporation PART 1 ADVANCED MODELING AND BEST PRACTICES

2. S1-2 ADM703, Section 1, August 2005 Copyright  2005 MSC.Software Corporation

3. S1-3 ADM703, Section 1, August 2005 Copyright  2005 MSC.Software Corporation PART 1: ADVANCED MODELING AND BEST PRACTICES n This part of this training course shows you how to apply advanced modeling techniques for use with ADAMS/Solver. n This part includes: u Jet Engine Turbine u Spring-Damper System u Washing Machine u Gatling Gun Fire Mechanism u Over-Running Pulley u Best Practices

4. S1-4 ADM703, Section 1, August 2005 Copyright  2005 MSC.Software Corporation

5. S1-5 ADM703, Section 1, August 2005 Copyright  2005 MSC.Software Corporation SECTION 1 JET ENGINE TURBINE

6. S1-6 ADM703, Section 1, August 2005 Copyright  2005 MSC.Software Corporation

7. S1-7 ADM703, Section 1, August 2005 Copyright  2005 MSC.Software Corporation JET ENGINE TURBINE n Model a catastrophic event (for example, a bird strike) in which one of the blades in a jet engine turbine is broken off. Illustrate the importance of shaft flexibility in accurately representing the shaft bearing loads. n What’s in this section: u Using ADAMS/Solver to Change Model Topology u Auto Beam Element Generator u Creating am ADAMS/Solver Command File u Postprocessing Review u Workshop 6: Jet Engine Turbine

8. S1-8 ADM703, Section 1, August 2005 Copyright  2005 MSC.Software Corporation USING ADAMS/SOLVER TO CHANGE MODEL TOPOLOGY n You can change model topology during a simulation. For example: u Breaking connections u Releasing constraints used solely for static equilibrium u Representing power-off scenarios n You can do this by using ADAMS/Solver commands in a simulation script.

9. S1-9 ADM703, Section 1, August 2005 Copyright  2005 MSC.Software Corporation USING ADAMS/SOLVER TO CHANGE MODEL TOPOLOGY (CONT.) n DEACTIVATE command u The DEACTIVATE command turns off a statement that was previously turned on by the ACTIVATE command, or that was active by default. u Format:

10. S1-10 ADM703, Section 1, August 2005 Copyright  2005 MSC.Software Corporation AUTO BEAM ELEMENT GENERATOR n ADAMS/View has three ways to represent flexible parts: u Import from finite-element model (ADAMS/Flex) u Create a flexible part within MSC.ADAMS (for example, ADAMS/AutoFlex) u Use a discrete flexible link (beam elements) n The following diagram illustrates the use of the beam element method:

11. S1-11 ADM703, Section 1, August 2005 Copyright  2005 MSC.Software Corporation AUTO BEAM ELEMENT GENERATOR (CONT.) n The BEAM statement in the ADAMS/Solver dataset creates a compliant force element (essentially, a stiffness and mass matrix) based on the Timoshenko beam bending theory. n Using the automatic beam-element generator functionality in ADAMS/View, you can quickly discretize geometry of simple cross-sections into a set of rigid parts connected by beam elements.

12. S1-12 ADM703, Section 1, August 2005 Copyright  2005 MSC.Software Corporation AUTO BEAM ELEMENT GENERATOR (CONT.) n To model the effects of a beam, ADAMS/Solver uses a linear translational and linear rotational action- reaction force between two markers. The forces the beam produces are linearly dependent on the displacements, rotations, and corresponding velocities between the markers at their endpoints.

13. S1-13 ADM703, Section 1, August 2005 Copyright  2005 MSC.Software Corporation CREATING AN ADAMS/SOLVER COMMAND FILE n Using a text editor, enter the commands you want to use to control your simulation, using the following guidelines: u The first line must contain the name of your dataset file. u The second line is the prefix name you want assigned to the output files that ADAMS/Solver creates. u The following lines contain all of the different commands you want ADAMS/Solver to use while performing the simulation. u The last line in your file contains the STOP command. n You should save the file with the extension.acf, although it is not required.

14. S1-14 ADM703, Section 1, August 2005 Copyright  2005 MSC.Software Corporation CREATING AN ADAMS/SOLVER COMMAND FILE (CONT.) n In this example, the name of the dataset is compressor.adm and the base name that is assigned to all of the output files ADAMS/Solver creates is run1 (run1.msg, run1.out, and so on). The next four lines turn off the separators between the different simulations in the output files, performs a transient simulation, the motion is deactivated, and then performs another transient simulation. The simulation is finally terminated with the STOP command. n Sample ADAMS/Solver command file

15. S1-15 ADM703, Section 1, August 2005 Copyright  2005 MSC.Software Corporation SAMPLE ADAMS/SOLVER COMMAND FILE (CONT.) n In ADAMS/View, you can create a simulation script, which is analogous to the ADAMS/Solver command file. To do this, select Simulate  Simulation Script  New, and then change Script Type to ADAMS/Solver Commands. The only difference is that the model name and output results name (the first two lines of the ADAMS/Solver command file) should not be used.

16. S1-16 ADM703, Section 1, August 2005 Copyright  2005 MSC.Software Corporation POSTPROCESSING REVIEW n Using ADAMS/PostProcessor to create powerful visualization and communication pieces.

17. S1-17 ADM703, Section 1, August 2005 Copyright  2005 MSC.Software Corporation POSTPROCESSING REVIEW (CONT.) n ADAMS/PostProcessor allows you to: u Plot u Animate u View split screens u Simultaneously plot and animate u Create movies

18. S1-18 ADM703, Section 1, August 2005 Copyright  2005 MSC.Software Corporation