研究牵引火炮全发射过程非线性结构动力学有限元建模和分析中的关键问题。
The key problems of finite element modeling and analysis of nonlinear structural dynamics for the whole firing course of towed howitzer are investigated.
将自选参数动力松弛法在工程实例中建模运用，并与非线性有限元找形方法的结果比较。
Establishing a practical construction model by using the automatic choice parameter dynamic relaxation, Then comparing the result with the result by using nonlinear finite element.
介绍了产生结构非线性的主要来源，并在接触理论的基础上对主反射镜组件进行了合理的有限元建模。
The main source for structural nonlinearity is summarized, and a FE model for the primary mirror subassembly of a collimator is established on the basis of contact theory.
本课题基于非线性、弹塑性有限元理论方法，对金属板料渐进成形的数值模拟的建模方法进行研究。
Based on the nonlinear, elastic-plastic finite element method theory, the modeling approach of the numerical simulation of incremental sheet metal forming was studied firstly in this project.
利用大型非线性有限元MARC ，对某自动迫击炮浮动炮闩闭气结构，进行了三维装配体有限元建模和动态弹塑性分析，获得了关键闭气构件的应力、塑性应变和变形的动态响应。
D assembly FE modeling and dynamic elastoplastic analysis are carried out for the obturator structure of a floating gun breech mechanism by using nonlinear finite element code MSC MARC.
采用ABAQUS非线性有限元分析软件对这两种结构形式进行实体建模。
Two kinds of structure models are built based on ABAQUS nonlinear finite element software.
基于正交和随机方法安排了有限元仿真试验，获得了用于非线性电磁建模的样本空间。
To obtain sample space used to establish the nonlinear regression model, the FEM simulation tests were arranged with the methods of orthogonal and random experimental design.
应用abaqu S非线性有限元分析软件，对空气弹簧进行有限元建模，计算其静态刚度特性。
Nonlinear stiffness characteristics of an air spring were analyzed (FEA) by a nonlinear finite element analysis package.
应用abaqu S非线性有限元分析软件，对空气弹簧进行有限元建模，计算其静态刚度特性。
Nonlinear stiffness characteristics of an air spring were analyzed (FEA) by a nonlinear finite element analysis package.
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