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Difference between part_x_form and part.CM results when contact forces are present?

mohsin.khan
Accelerations with Adams_postprocessor/object/body/CM_acceleration
&
Accelerations with Adams_postprocessor/Result Sets/part_xform/ACCZ
are different for dynamic simulation with contact forces present in the model.
Can anyone help me with this odd behviour ?
or
Can anyone tell me how part_xform measures result and which marker it considers ?
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  • 0
    How about good old requests ?
    Using pre-defined stuff always sucks. With requests, you can specify your own measurement channels.
     
    You wouldn't have to change anything on the part except adding some markers at user-specified locations.
    Then create a request "give me DX/Y/Z or ACCX/Y/Z for this exact point vs. ground.origo or any other user-chosen reference" and the job is done.
    Changing this Marker after creation is easy. In A/Car you usually create the marker and parametrize it to a hardpoint (point in A/View). When changing the point, the marker changes the location, too.
    The part itself is not affected, unless it's not parametrized, too.
Reply
  • 0
    How about good old requests ?
    Using pre-defined stuff always sucks. With requests, you can specify your own measurement channels.
     
    You wouldn't have to change anything on the part except adding some markers at user-specified locations.
    Then create a request "give me DX/Y/Z or ACCX/Y/Z for this exact point vs. ground.origo or any other user-chosen reference" and the job is done.
    Changing this Marker after creation is easy. In A/Car you usually create the marker and parametrize it to a hardpoint (point in A/View). When changing the point, the marker changes the location, too.
    The part itself is not affected, unless it's not parametrized, too.
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