At low flow attenuation performance of semi-active muffler was computed respectively by using theoretical formula and three-dimension finite element method.
低速气流时，分别进行了半主动消声器的消声性能理论计算和三维有限元法数值计算。
Three-dimension analysis of solid rocket motor grain was presented based on incompressible and nearly incompressible viscoelastic finite element method.
基于不可压和近似不可压粘弹性有限元法，对固体火箭发动机药柱进行了三维分析。
In this paper, finite element method of a quasi-three dimension problem was described in detail, where the stress-strain relations are linear or nonlinear.
本文详细地描述了准三维问题的有限元法，包括应力应变关系是线性的情况和应力应变关系是非线性的情况。
Three dimension finite element method is used to calculate the stress state of the cantilever during each construction stage.
因此对桥悬臂施工过程进行了三维有限元计算，分析了各个施工阶段的应力状态。
In this thesis the heat transfer theory and the finite element method are used to simulate the two dimension temperature field and the three dimension temperature field.
本文应用传热学基本原理和有限元基本方法，完成了二维、三维导热温度场的有限元数值模拟。
The strength of oblique edge shear is analyzed by three dimension finite-element method, through which provides scientific basis for increasing shearing capability.
用有限元法对剪切机机架强度进行分析，为提高剪切机剪切能力提供了理论依据。
Based on the dynamic characteristics obtained with three dimension finite element method, the reduced mechanical model and parameters of lift ship structure can be modified and obtained.
利用三维有限元方法计算的结构动力特性和简化结构动力特性相等的原则修正升船结构简化力学模型，并确定了等效的升船机简化结构模型和系统参数。
The cross wedge rolling deformation process of shaft parts with eccentric section was simulated with three-dimension finite element soft LS-DYNA by using elastic-plastic finite element method.
利用三维弹塑性有限元软件L S- DY NA对一种典型偏心轴类零件楔横轧成形进行了数值模拟，分析了其成形过程、应力应变场分布及工艺特点。
Three dimension finite element simulation and analysis of shoulder is a valuable mechanical method for research on biomechanics theory related to humerus fracture.
肱骨骨折的三维限元模拟和分析是究与骨折相关的力学原的非常有价值的方法。
For the multiphase flow measuring system on-line based on three dimension finite element method (3d FEM), the capacitance-based multiphase flow which is connected to the oil pipeline is a column.
基于三维有限元法的在线多相流测量系统，所接入输油管道的电容式多相流为圆柱形。
For the multiphase flow measuring system on-line based on three dimension finite element method (3d FEM), the capacitance-based multiphase flow which is connected to the oil pipeline is a column.
基于三维有限元法的在线多相流测量系统，所接入输油管道的电容式多相流为圆柱形。
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