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Found 2 results

  1. I am trying to trouble shoot a problem I am having with a kjoint2 in Radioss. Can you help me understand the way the initial angle is outputed in the starter file? I use two node reference systems (skew_ID1 and skew_ID2 in kjoint2 card) that have a rotation between their Z axis (see image below). The rotation can be seen in the TH/spring (~0.5rad) when I plot it in Hyperview but I can't seem to understand how it is showed in the starter file (all numbers below "initial angle" are 0?). Can you help me understand the starter file info please? Also see my other post:
  2. Long story and potentially many questions in the same post but all related to the same issue and I ned help! I can't seem to understand how my kjoint2 spherical connection between 2 RBODY is behaving. What I am trying to model is a suspension ball joint in Radioss and I want the rotation to be limited to a certain maximum angle in ANY direction from vertical (creating a conical shaped limit envelop). I created a simple problem to resolve my issues but it doesn't seem to work. I cerated 2 node reference systems in such a way that they move together and that their Z axis is always coaxial. I then limited my kjoint2 in Saz- and Saz+ to ±1 rad but it does not behave as desired. When I plot my TH/spring, I can see that RZ of my spring DOES respect the 1 rad angle limit. But this does not make sense with the visual behavior and the true angle that I can plot in Hyperview that cleary goes over 1 rad. Also Rx and Ry are showing rotation which again does not make sence with the visual behavior. Any help to resolve this is appreciated! Thanks All my simple model files: Radioss_BJ_angle_V19.zip
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