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Thank you.....that gives me some options to move forward with - - I'll let you know how I get on. Whether I use a distributed mass or a remote force I get a conflicting contact region or remote boundary conditions warning (see file) and yet my joints appear to show no conflict (see file) and...

I am working on a transient analysis of jointed structure (see file attached) - it is a reclining chair mechanism. I have previously obtained solutions when I apply distributed masses on the seat bracket and footrest bracket. Now I think this is not a realistic method to apply the load as the...

I am carrying out a Transient Structural Analysis of a mechanism with approx. 20 joints. All but one of these is a revolute joint. The remaining joint is a slot. In practice the connector in this joint does not slide along the slot until the mechanism is opened out fully. In my model the...

Hi I am trying to combine constraints in a size optimisation in Optistruct. I have tried it in various ways and get similar errors (but no results [sad]). i) If I use dequations and normalise the displacement constraint and stress constraint so that they have the same range and then use a 3rd...