套筒力(Bush)特点
套筒力各分量 刚度矩阵 变形 阻尼矩阵 速度 预载
各量均在J marker坐标系中观察。
套筒力的刚度、阻尼矩阵是对角阵。
反作用力 FJ = - Fi , TJ = Ti - δ X Fi
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Note: For the rotational constitutive equations to be accurate, at least two of the
rotations (a, b, c) must be small. That is, two of the three values must remain
smaller than 10 degrees. In addition, if a becomes greater than 90 degrees, b
becomes erratic. If b becomes greater than 90 degrees, a becomes erratic.
Only c can become greater than 90 degrees without causing convergence
problems. For these reasons, it is best to define your bushing such that angles
a and b remain small (not a and c and not b and c).
2026-03-19 09:27:13
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