The mechanical models for bulged casing and expandable body are set up based on elastoplastic finite element theory.
根据弹塑性有限元理论，建立了膨胀套管和膨胀心头的力学模型。
Stability analysis is carried out with prestressed spatial steel structures according nonlinear finite element theory.
基于非线性有限元原理对预应力空间钢结构进行了稳定性能分析。
To analyze key spare parts by utilizing finite element theory improved design scheme and develop the design reliability.
应用有限元分析理论对关键零部件进行了分析，提出了改进的方案，提高了设计的可靠性。
By using non-linear finite element theory, a non-linear finite element model for hydroforming for rear axle housing is established.
利用非线性有限元理论方法，建立了后桥壳液压胀形有限元模型。
Based on the finite element theory of non-linear thermal coupling, coupledly analyse the interaction between temperature load and the deformation.
体现了铝板坯铸轧过程为材料非线性、几何非线性和接触非线性的大变形。
The mechanical model of composite energy storage flywheel is built based on the orthotropic elastic solid basic theory and the finite element theory.
分别基于平面应力型全弹性模型和三维数值模型建立了计算复合材料飞轮破坏转速的二维和三维算法。
The three-node beam element tangent stiffness matrix including the geometric stiffness matrix is developed according to the nonlinear finite element theory.
进而依据非线性有限元理论推导了该三结点梁单元的几何刚度矩阵的单元切线刚度矩阵；
Based on fracture mechanics and finite element theory, calculation and analysis stress intensity factor of fiber asphalt chip seal under different conditions.
基于断裂力学和有限元原理，计算分析了纤维沥青碎石封层路面结构在不同条件下的应力强度因子。
Introducing heat exchange theory and finite element theory, and deducing the theory that applies finite element method to thermal analysis and thermal stress analysis.
介绍了传热学基本理论知识，有限元方法思想。对有限元法在热分析和热应力分析中的具体应用进行了理论推导。
By means of the finite element theory, the inherent frequencies and vibration characteristics for existing rail line under different supporting conditions are analyzed.
运用有限元理论，分析了既有线路在不同支承条件下的固有频率和固有振动特性。
The finite element theory of temperature and stress field in the process of cast solidification, and method to measure material thermo-physical parameter were concluded.
总结了铸件凝固过程中温度场、应力场的有限元理论以及材料热物性参数的测定方法。
The internal forces in tensile membrane structures were analyzed using geometrical nonlinear finite element theory using curved quadrilateral isoperimetric 8 node elements.
本文根据几何非线性有限元理论，采用8结点曲面四边形等参单元，编制了用于张力膜结构内力分析的有限元程序。
The dissertation analyses the air spring and spring bracket which belong to the air suspension system as pivotal components taking use of the finite element theory and method.
论文应用有限元理论与方法，研究分析了空气悬架的关键元件——空气弹簧和弹簧支架。
The core of the virtual prototype technology is on the realization of modeling theories and technology, mechanical system dynamics, finite element theory and control theory, etc.
虚拟样机技术的核心是机械系统动力学、有限元理论和控制理论等建模理论及其技术的实现。
Based on geometrical nonlinear finite element theory, a curved quadrilateral isoperimetric element with8 nodes for initial form analysis of tensile membrane structures is presented.
根据几何非线性有限元理论，提出张力膜结构初始形态分析的8结点曲面四边形等参单元。
Based on geometrical nonlinear finite element theory, a curved quadrilateral isoperimetric element with 8 nodes for initial form analysis of tensile membrane structures is presented.
根据几何非线性有限元理论，提出张力膜结构初始形态分析的8结点曲面四边形等参单元。
Based on geometrical nonlinear finite element theory, a curved quadrilateral isoperimetric element with 8 nodes for initial form analysis of tensile membrane structures is presented.
本文根据几何非线性有限元理论，提出张力膜结构初始形态分析的8结点曲面四边形等参单元。
A new model of spatial flexible beam element is proposed. The dynamic equation of the spatial flexible beam element is derived based on the finite element theory and Lagrange equations.
建立一种空间有限元梁单元新模型，基于有限元法和Lagrange方程导出有限元梁单元的运动微分方程。
Based on finite element theory and optimization theory, considering mechanical properties of the structure, the reliability optimization design method of tower truss system is presented.
根据有限元理论及最优化理论，同时考虑结构受力特点，给出了塔架体系在可靠度约束下的最优化设计方法。
The finite element theory, the dynamics theory offers an advanced method. During the analysis of the virtual digital model, we can find the problem exist in the initial stages of design.
有限元理论、多体动力学理论、疲劳理论为汽车零部件设计提供了先进手段，通过对汽车零部件虚拟模型的分析，可以找到在设计阶段的问题。
To the dynamic stability of the K8 single layer latticed shell structures under the seismic loads, this paper carried out the dynamic stability analysis based on the nonlinear finite element theory.
针对单层k8型网壳结构在强震时的动力稳定问题，应用非线性有限元理论进行了分析。
The characteristic of rubber sealing X-ring change section was concluded. Finite element analysis was made for rubber sealing X-ring change section by using finite element theory and ANSYS software.
总结了X形变截面橡胶密封圈的特点，基于有限元分析理论，借助软件ANSYS对X形变截面橡胶密封圈进行有限元分析。
Taking a large-scale bus frame as the research object, the thesis carried out static and dynamic analysis under typical operation situation based on the finite element theory and engineering trials.
本文以一款大型客车骨架为研究对象，结合有限元理论和工程试验，进行了典型工况下的静态、动态分析。
Then, simply introduce the finite element theory foundation of computer simulation technology, analyse and sum up the application trait and function of the sheet forming simulation software-DYNAFORM.
其次，简要介绍了计算机仿真技术所依赖的有限元理论基础，并对板料成形专用有限元模拟仿真软件dynaform的应用特点及功能做了总结和分析。
Based on the geometrical nonlinear finite element (GNFE) theory, a curved quadrilateral isoperimetric element with 8 nodes for initial form analysis of tensile membrane structures is presented.
本文根据几何非线性有限元理论，提出张力膜结构初始形态分析的8结点曲面四边形等参单元。
Theory calculate and finite element method to symmetric conic-section flexure hinges is used to compare and analyze their dynamics characteristic.
通过对四种二次曲线截面的柔性铰链的理论计算和有限元分析，比较分析了它们的力学特性。
Theory calculate and finite element method to symmetric conic-section flexure hinges is used to compare and analyze their dynamics characteristic.
通过对四种二次曲线截面的柔性铰链的理论计算和有限元分析，比较分析了它们的力学特性。
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