Fred Ruff with a look at using the (old way back from 1999) Flex Modifier in 3DS Max for spring simulations, and in this instance he demonstrates such a task on the trunk of an elephant. Mr. Ruff starts with a brief history of the Flex modifier and then continues on to setting up the simulation. Follow along or view the spring simulations with 3ds’ flex modifier article here.

Ruff’s Stuff Blog – Flex Test 7 from Fred Ruff on Vimeo.

“Ever wish you could create a soft body simulation on your mesh to bounce it around? 3ds max has had this ability for many years now, but it’s tricky to set up and not very obvious that it can be done at all. (This feature could use a re-vamp in an upcoming release.) I pull this trick out whenever I can, so I thought I’d go over it for all my readers. It’s called the Flex modifier, and it can do more than you realize.”