| 固化物质导数与标架旋率 |
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| 引用本文： | 程莉,黄克智.固化物质导数与标架旋率[J].力学学报,1987(6). |
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| 作者姓名： | 程莉 黄克智 |
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| 作者单位： | 北京工业学院，清华大学 清华大学在职博士生 |
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| 摘 要： | 本文提出了固化物质导数的概念,导出了标架旋率的一般公式,阐述了标架单位矢量的固化物质导数与一般物质导数的区别,以变形率标架为例讨论了两种导数的差异,并论述了标架旋率与其相应的变形张量率的关系。
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| 关 键 词： | 固化物质导数 标架旋率 主轴法 |
ON EMBEDDED MATERIAL DERIVATIVE AND FRAME SPIN |
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| Cheng Li.ON EMBEDDED MATERIAL DERIVATIVE AND FRAME SPIN[J].chinese journal of theoretical and applied mechanics,1987(6). |
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| Authors: | Cheng Li |
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| Institution: | Cheng Li(Beijing Institute of Technology)Hwang Kehchih(Tsinghua University) |
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| Abstract: | In the present paper, the concept of embedded material derivative is proposed, the general expression for frame spin is derived, the difference between embedded material derivative and conventional one of triad unit vectors is clarified. Furthermore, the formula for strain-rate frame spin is obtained, and by means of this example, the distinction between the two kinds of material derivatives is discussed. Then, the relations between several frame spins and the rates of corresponding tensors co-rotating with the frame are elucidated. |
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| Keywords: | embedded material derivative frame spin method of principal axes |
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