38.4. BBTA (Bushing Bearing Type A)
Bushing Bearing Type A (BBTA) has different followings in the journal direction. This bearing is a virtual bearing, so do not have the geometric entities.
Figure 38.34 A concept image of No. of Nodes = 8, No. of Strands = 5
Figure 38.35 Geometric information for BBTA
Figure 38.36 Force model of BBTA
\(F=K_0 {\left( \frac{K_B}{K_0} \right)}^{\left( \frac{X}{X_B} \right)} X+C_0 {\left( \frac{C_B}{C_0} \right)}^{\left( \frac{X}{X_B} \right)} \dot{X}\), \(X_B:\text{radial clearance}\)
\(X\): + value compression, - value tension
Figure 38.37 Side Geometric information for BBTA