duhamel integral 中文意思是什麼
duhamel integral
解釋
杜哈梅積分-
Based on the unified recursive formula, the four algorithms included in this study are the central difference method, the newrnark ' s method, z - transform method, and duhamel ' s step integral method. the accuracy, the phase and other existent problem are studied in this paper. it is proved in this paper that the recursive parameters b1and b2are relate to the poles of theoretical transfer function
分析中可以發現，中心差分方法， newmark中點加速度方法、 z變換方法及duhamel逐步積分法在精度范圍內其計算相位是沒有畸變的，中國地震局工程力學研究所頃土學位論文一但是中心差分方法， newmark中點加速度方法隨著采樣間隔及系統自振頻率的增大，系統的固有自振周期被改變，其傳遞函數的共振區域與理論傳遞函數的共振區域會發生分離。 -
A new step - by - step integral procedure of dynamics equations is presented. the general expression of the solution of dynamics equations is obtained on the basis of the homogenous analytical solutions of dynamics equations and duhamel integration. the explicit analytical integration algorithm, which is characterized by fourth - order accuracy, self - starting and self - correcting, is employed to discretize the equivalent load terms
另外提出了求解動力學方程的一個新型的逐步積分法，基於線性動力學方程的解析齊次解及duhamel積分，構造出適用於非線性動力學方程解的一般積分表達式，對包含非線性項的非齊次項採用插值近似的方法，得到一個單步顯式、自起步、預測校正具有四階精度的解析逐步積分演算法。
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