public void setDamping(float dampingRatio) {
        damping = dampingRatio;
    }
Alter the viscous damping ratio for new rigid bodies.

@param dampingRatio the desired damping ratio (non-negative, 0&rarr;no
damping, 1&rarr;critically damped, default=0.6)
jme3-jbullet/src/main/java/com/jme3/bullet/animation/DacConfiguration.java