选择共轭梯度法解决由有限元法形成的大型稀疏矩阵方程，应用FORTRAN语言编制了数值模拟系统软件。
Conjugate gradient method were choosed to solve the large sparse matrix equations induced by the FEM and computer language FORTRAN was used to programme the numerical simulation system software.
利用有限元法，通过有限元分析软件对其实际工况进行整体结构数值模拟，得出主轴装置在实际工况下的应力、变形情况。
It makes use of finite element method to carry out the numerical value simulation by software in reality in order to get the condition of strain and deformation on the main axle installing.
以渝怀铁路人和场隧道爆破施工为背景，采用动力有限元法对浅埋隧道掘进爆破引起的地表震动效应进行了数值模拟。
By taking a shallow tunnel on the Yuhuai railway as the research object, ground vibration induced by blasting was simulated numerically using a dynamic finite element method.
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