Adams Assignments – Problem 4 – Steering geometry 2

Plate 1 Von Mises Stress Von Mises Strain   Plate 2:  Equivalent Strain   Equivalent stress a) Plate 2 has less stress and less strain. Very very small difference.  b) Two small holes releases the stress concentration in the middle. Plate 2  c) Plate 1 would still be fine so less manufacturing…

Part 1  Bumper assembly has geometric issues to be cleaned up first before meshing by surface extension midplate is extended to upper and lower plates Some other geometric issues to be fixed   AFTER GEOMETRY CLEAN UP    Meshing with 6mm Free Edges on the geometry: In the marked region weld connection…

    Modifications:      Targets:   oCaster angle : ~4.00 deg Reached 4.17 oCaster moment arm : ~21.00 mm Reached 20,42 mm oKPI angle : ~13.00 deg Reached = 12.61 deg oSteer axis offset (resultant) : ~85.00 mm Reached 83 mm oSteer axis longitudinal offset : ~0.00 mm Reached 0 mm oScrub radius…

MDI _ Mc Pherson Front Suspension Adams Model Wheel Rate of the baseline suspension system Wheel rate at 0 wheel travel is 32.77 N/mm  The target wheel rate is 20 N/mm Baseline Motion Ratio = 0.93  Ride Rate at 0 wheel travel is 28,16 N/mm  Motion Ratio = sqrt(28,16/32,77) = 0.93  (Adams found the same) …