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Soft bodies are deformable and elastic objects, for example cloth, rubber or jelly. This solver provides a wide variety of features, great stability and accurate results. Users of previous versions will quickly discover that there are absolutely new parameters available. Another new feature is that soft bodies can now keep the deformation they experience (“Plasticity”). With this approach it is possible to simulate bending metal, as can be observed after car crashes, for example. These sophisticated possibilities open up a whole new world of soft body dynamics and, of course, the new solver can interact with particles, rigid bodies and waves. Soft bodies also support "MultiJoints" – RealFlow’s “invisible” connection between dynamic objects.
Mass
A dynamic object always needs a certain amount of mass to become influenced by forces. In RealFlow, mass is always given in kilograms and the initial value is calculated automatically. Mass is one of the most important parameters with dynamic bodies, because it strongly influences the object’s entire movement and behaviour. To move an object, a force is needed. Inside RealFlow forces can be introduced with daemons or other objects (also particles) hitting the body. For each object, whether it is native or imported from external sources, RealFlow automatically calculates its mass. Please bear in mind that a body's acceleration does not depend on its mass. In other words: in a vacuum, all objects will have exactly the same fall velocity regardless of the adjusted “Mass” value. If you want to create differences, please consider changing “Air friction”.
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