sag tension 中文意思是什麼
sag tension
解釋
垂弛張力-
The cable sag and bending stiffness effects are studied on the higher natural frequencies of cable vibration. it is found that the differences of the higher adjacent frequencies go to the fundamental frequency of the taut string theory even though the cable sag or bending stiffness is included. this unique characteristic of cable vibration is used to determine the cable tension with the well - known taut string theory
2 .考慮垂度和抗彎剛度對高階自振頻率的影響，探討了索相鄰頻率之差，發現索的高階頻差就是弦振動理論的基頻，利用這一特性，分析了頻差法測索力的精度和適用范圍。 -
During the finite element modeling of the bridge, the factors affecting the accuracy of the finite element model are discussed in detail, such as, the geometrical non - linearity of the cable including gravitational sag and initial tension, and the structural orthotropic steel box - girder deck to be equivalent to physical orthotropic deck by using compound material mechanics, and so on
在建模過程中，盡可能多地考慮了一些影響全橋有限元模型精度的因素：如斜拉索的幾何非線性（重力垂度和初始應力） ，將構造正交各向異性鋼箱梁橋面板用復合材料力學的方法等效為物理正交各向異性板等。 -
The main work of this thesis includes : 1. using energy theory, the cable sag and bending stiffness effects are investigated on the determination of cable tension forces through cable ' s fundamental frequency. based on the curve fitting, the practical formulas are proposed where the cable tension can be easily estimated using measured fundamental frequency
本文的主要工作包括： 1 .考慮拉索的垂度和抗彎剛度對基頻的影響，用能量的方法，並輔以曲線擬合，提出了由基頻計算索力的實用公式，公式與理論解的誤差在以內，並對公式的適用范圍進行了討論。
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