Dynamic Analysis of a Double-Tube Shock Absorber for Robust Design.

In this study, a robust design approach is presented to determine the desired damper force characteristics of a double-tube shock absorber based on a dynamic analysis in which design constraints to prevent cavitation are derived. First, a nonlinear mathematical model of the shock absorber is developed based on fluid mechanics. Then, the design constraints to prevent cavitation are derived based on a dynamic analysis, and a design methodology of the desired damper force characteristics of a spring-loaded valve is determined. Finally, experimental verifications are performed to confirm the mathematical model and the design constraints, and computer simulations are performed for three design cases to verify the postulated design methodology.