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单词 inertia matrix
释义

inertia matrix

(inertia tensor) The inertia matrix (or inertia tensor) IP of a rigid body (associated with a given point P) arises in the calculation of the kinetic energy and the angular momentum of the body in general motion. It is the symmetric matrix

(see moment of inertia, product of inertia). By the spectral theorem, there is an orthogonal set of axes—the principal axes—with respect to which the inertia matrix is diagonal with the diagonal entries being the principal moments of inertia.

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更新时间:2025/4/28 17:15:50