FSI Analysis of Shock Absorber
Shock absorbers are used in many industrial applications to decelerate loads,
prevent impact damage, dampen noise, increase equipment speeds and improve
overall product performance. A major objective in the design of shock absorbers
is to achieve a linear deceleration, and hence reduce the shock and damage to
equipment and machine. The capability of the ADINA System to solve problems of
fluid flow with structural interaction has been used effectively to help designers
in such applications.
When ACE Controls engineers were told to redesign their company's shock absorber,
improve its performance by 50%, and constrain its size, they turned to software
analysis. To locate the best program, 11 different FEA software vendors were
contacted with a test problem. ADINA was selected!
With the help of ADINA analysis tools, ACE Controls engineers designed the
new Magnum shock absorber that offers up to 3.9 times the effective weight
capacity and absorbs 50% more impact energy than its predecessors, without
an increase in size or cost.
Results from ADINA (below) show how pressure affects the bladder when wall thickness
is reduced from 40 thousandths to 35 thousandths of an inch.