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visual3d:documentation:modeling:segments:transforming_segment_moment_of_inertia [2024/06/17 18:17] – created sgrangervisual3d:documentation:modeling:segments:transforming_segment_moment_of_inertia [2024/07/17 15:45] (current) – created sgranger
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 +====== Transforming Segment Moment of Inertia ======
  
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 Let the Inertia Tensor of Segment (foot or shank) in it’s own local coordinate system (f) be given: Let the Inertia Tensor of Segment (foot or shank) in it’s own local coordinate system (f) be given:
  
-[[SegmentInertia_1.gif]]\\+{{:SegmentInertia_1.gif}}\\
  
  
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 Find the value of this inertia tensor in any other reference frame (for example, ground) using the following equation: Find the value of this inertia tensor in any other reference frame (for example, ground) using the following equation:
  
-[[SegmentInertia_2.gif]]\\+{{:SegmentInertia_2.gif}}\\
  
  
-Where [[SegmentInertia_3.gif]] is the rotation matrix that transforms a vector from it's own coordinate system (lcs) to the ground coordinate system+Where {{:SegmentInertia_3.gif}} is the rotation matrix that transforms a vector from it's own coordinate system (lcs) to the ground coordinate system
  
-and [[SegmentInertia_4.gif]] is its transpose.+and {{:SegmentInertia_4.gif}} is its transpose.
  
-The above expression does not include the terms due to the parallel axis theorem ([[SegmentInertia_5.gif]]) which are:+The above expression does not include the terms due to the parallel axis theorem ({{:SegmentInertia_5.gif}}) which are:
  
-[[SegmentInertia_6.gif]]\\+{{:SegmentInertia_6.gif}}\\
  
  
 where the vector s defines the location of hte segment's center of mass relative to ground. where the vector s defines the location of hte segment's center of mass relative to ground.
  
-The total Inerties [[SegmentInertia_7.gif]] for the segment is:+The total Inerties {{:SegmentInertia_7.gif}} for the segment is:
  
-[[SegmentInertia_8.gif]]\\+{{:SegmentInertia_8.gif}}\\
  
  
 To find the total moment of inertia of all segments relative to ground you add the individual segment inertias: To find the total moment of inertia of all segments relative to ground you add the individual segment inertias:
  
-[[SegmentInertia_9.gif]]\\+{{:SegmentInertia_9.gif}}\\
  
  
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 **Yeadon, M.R.** (1993). The biomechanics of twisting somersaults. Part IV: Partitioning performance using the tilt angle. Journal of Sports Sciences 11, 219-225. **Yeadon, M.R.** (1993). The biomechanics of twisting somersaults. Part IV: Partitioning performance using the tilt angle. Journal of Sports Sciences 11, 219-225.
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visual3d/documentation/modeling/segments/transforming_segment_moment_of_inertia.1718648271.txt.gz · Last modified: 2024/06/17 18:17 by sgranger