Two order two stage explicit symplectic scheme and its stablity for the four-order rod vibration equation;
杆振动方程的二级二阶显式辛格式及其稳定性
In integration, explicit formulation has been used with the lumped mass matrix so that it facilitates the calculation of the displacement and ayoids the convergence problem caused by the nonlinearities in material, geom.
数学模型采用物质坐标系中的修正的拉格朗日描述，采取集中质量矩阵，用动力显式积分的方法，使位移计算显式化，避免了由材料、几何、边界条件等高度非线性因素引起的计算收敛问题。
In this paper, an economical explicit scheme is used to integrate two high resolution numerial prediction models.
本文提出利用省时显式方案积分两个高分辨有限区数值预报模式。
Based on the actual structure and specific working character of disk spring,experimentation was done on combination disk spring and the process of continuous load as well as load—unload of congruent disk spring was imitated with nonlinear explicit algorithm of the finite element software ANSYS/LS—DYNA.
从碟簧的实际结构特征和具体工作特点出发,对组合碟簧进行静刚度试验测试,并利用有限元软件ANSYS/LS—DYNA的非线性显式算法进行计算,对叠合碟簧的连续加载以及加载—卸载过程进行数值模拟,得到碟簧的载荷位移关系曲线。
Parallel algorithm for explicit integration method in nonlinear dynamic structural analysis;
结构非线性动力分析显式积分并行算法
The accuracy of characteristic analysis is as necessary for an explicit integration scheme as the stability property.
在动力问题分析中,一种好的显式积分方法不仅要具有良好的稳定性,而且还要具有良好的计算精度。
, explicit integration method and implicit integration method.
在实际工程结构动力反应分析中,往往由于结构型式十分复杂,常用的两种直接积分方法,即显式积分方法和隐式积分方法,在使用中都存在着一定的局限性,如何将这两种积分方法合理有效地结合起来,是一个十分有意义的研究课题。
To ensure the calculation precision and efficiency of the tube hydroforming process when using the dynamic explicit FEM,the effect of the virtual loading time was taken into account herein.
为保证管件液压成形动力显式有限元仿真的计算精度和提高计算效率,研究了虚拟加载时间对计算精度和计算效率的影响。
A finite element analysis program DESSFORM3D for the simulation of sheet forming process using dynamic explicit algorithm is developed.
本文基于连续介质力学及有限变形理论 ,建立了用于三维板料成形过程分析的有限元模型 ,开发了动力显式算法的板料成形过程模拟的有限元分析程序DESSFORM3D。
In integration,the dynamic explicit algorithm has b een used with the lumped mass matrix so that it facilitates the calculation of t he displacement and a.
基于连续介质力学及有限变形理论,建立了适合于三维板料成形分析的显式算法的有限元数学模型,采取集中质量矩阵,用动力显式积分的方法,使位移计算显式化,避免了由材料、几何、边界条件等高度非线性因素引起的计算收敛问题。
The theory of the static implicit and dynamic explicit elasto plastic finite element method was overviewed in this paper.
对隐式静力和显式动力弹塑性有限元的理论进行了分析 ,并将这两种算法应用于轧制过程的模拟计算中 ,计算结果基本相符。
The intelligent fitting method for binary nonlinear polynomials was presented in order to obtain a high precise and simple form explicit equation for calculating the friction factor.
为了得到形式简单、精度高的计算摩擦因数的显式方程,提出了二元非线性多项式智能拟合法。