structural dynamic modification 中文意思是什麼
structural dynamic modification
解釋
結構動力學修正- structural : adj. 構造上的，結構上的，組織上的。adv. -ly
- dynamic : adj 1 動力的，動力學的；力學（上）的；動（態）的；起動的。2 有力的，有生氣的；能動的；（工作）效...
- modification : n. 變更，更改，修正；改良，改進；緩和；修改；減輕；限制；【生物學】誘發變異，變態，變體，變型；【語法】修飾；（用變音符號的）母音改變。
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A pile testing method based on structural dynamic modification
基於結構動力修改的樁基檢測方法 -
Abstract : according to the dynamic demand of main shaft system, the structural dynamic modification method is used for correcting the stiffness of the supportings member and joints, so that the dynamic characteristic of main shaft system should meet the need of design. a practical structure of elastic supporting and elastic joints has been designed on the basis of corredcted stiffness of supporting and joint. the numeric simulation of main shaft system with elastic supportings and elastic joints are compared with its design requirement. their coincidence verifies the effectiveness of sdm method and the correctness of design method
文摘:根據細紗機主軸系統的動特性要求，應用結構動力學修改方法來修正支承和聯軸節單元的剛度，以使主軸系統的動特性滿足設計要求.根據修正過的支承和聯軸節的剛度，一個彈性支承和彈性聯軸節的實際結構已經被設計出.比較具有彈性支承和彈性聯軸節的主軸系統的數字模擬與設計要求.其一致性證明了sdm方法的有效性和設計方法的正確性 -
This method is developed on the basis of the theory of dynamic modification in structural dynamics and combines the theoretical analysis with testing to determine the stiffness and damping coefficients
該方法應用模態分析中的結構動力修改與靈敏度分析理論，採用理論分析和實驗相結合的方法確定變壓器繞組剛度系數。 -
The structural dynamic sa in project is of great importance for the study on dynamic design, optimization design, control theory and dynamic modification etc. and direct method, difference method and perturbation method for dynamic sa are adopted regular, though following shortages are obvious : only local impact of the factors on the model can be obtained ; model dependence ; the interval is usually the same for all of the variables and is not related to our degree of knowledge of the variables ; shortage of precision and so on
工程結構的動態特性靈敏度分析對工程結構的動態設計、優化設計、控制理論和動態修改等方面的研究有著十分重要的意義。目前，結構動態特性靈敏度的分析法一般採用局部法，如直接法、差分法和攝動法。但是這些方法只能求參數域某點的靈敏度，不僅受模型、計算精度的限制，而且二階以上的靈敏度求解比較困難。
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