As I understand via section 11.3 of the ISM API 6.0, the R-axis is defined by the member location and would be the unit vector between the start and end nodes of the member. I do not see further information like this regarding the orientation axis t, but do see it under the orientation heading within the structural synchronizer of the ISM repository. Would you please explain how the orientation axis t is derived?
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ISM: I am busy with a round-tripping process between ISM and Strand7. Would you please explain how the orientation axis t is derived?
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