Optimization of a snap through spring for a hydraulic valve with hysteresis response behavior
Sprache des Vortragstitels:
Englisch
Original Tagungtitel:
ASME/BATH 2019 Symposium on Fluid Power and Motion Control (FPMC2019) October 7-9, 2019, Sarasota, FL, USA
Sprache des Tagungstitel:
Englisch
Original Kurzfassung:
The hydraulic binary counter requires switching valves with
a hysteretic response. In this paper an elastic snap through element
is studied as means for that. The concept is based on a
buckling beam which is elastically supported in axial direction
in order to adjust its buckling properties with moderate manufacturing
precision and to assure a well defined snap through behavior.
The elastic support is provided by a cantilever beam. A
rigorous optimization is performed heading for a most compact
and fatigue durable design which exhibits the required lateral
force displacement characteristics. A genetic algorithm is used
to find the global design optimum. The stress/displacement properties
of each design variant are computed by a compact model of
the snap through system. It is derived by a Ritz method to obtain
approximate solutions of the nonlinear buckling beam behavior.
Its validity is checked by a Finite Element model. A compact design
is possible if high strength spring steel is used for the elastic
elements.
Forschungs-