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rotational inertia 【物理學】轉動慣量。

rotative

The equations of motion governing the axisymmetric elastic deformation of finite orthotropic cylindrical shells , involving the effect of transverse shear and rotational inertia , are derived . by applying the reverberation method , the displacement and the resultant forces of the shell in the phase space are expressed . then the transient waves in the finite orthotropic cylindrical shell subjected to the axisymmetric impact are obtained by using inverse laplace transforms . furthermore , the transient solutions are decomposed to the generalized ray integrals and computed numerically 分析了計及剪切變形和轉動慣性的有限長正交異性圓柱殼中彈性瞬態波的傳播問題,采用回傳矩陣法,在相空間中給出了位移和內力的表達式。再利用laplace逆變換,得到正交異性圓柱殼受軸對稱沖擊作用時彈性瞬態波解,然后將其分解為若干廣義射線積分之和,并用數值方法求解之。

The period of these torsional oscillations depended on the rotational inertia of the helium ; the oscillations occurred more rapidly when the inertia went down , just as if the mass of the helium decreased 這種扭轉振?的周期取決于氦的轉動慣量,轉動慣量減少時振?加快,看起來好像是氦的質量減少了。

The rotational inertia of an arbitrarily triangle uniform plane is calculated by a simple method . it is pointed out that principal axes can be deduced from the calculation 摘要用一種簡單的方法計算了均質的任意三角形平板剛體的轉動慣量,并由此結果給出一般三角形的慣量主軸。

Chan and kim observed such a decrease of rotational inertia in a ring of solid helium 陳鴻渭與金恩成在一圈固態氦中,觀察到這種轉動慣量減少的情形。