Mechanical Simulation Corporation, producer of the CarSim software suite, has announced that its latest iteration, 2020.1, introduces a new front suspension type called the virtual steering axis. It says that this suspension type is intended to model passenger car independent front suspensions that have a split upper or lower control arm, meaning no fixed kingpin geometry.
Rather than separate suspension and steering kinematics input tables, the company notes that the virtual steering axis mode uses common 2D tables of jounce and steering rack travel to locate the wheel. This video provides a detailed explanation of the modeling approach used in CarSim for this suspension type.