1) isoparametric element
等参单元
1.
Study of degeneration models of isoparametric element in finite element method;
有限元等参单元退化模式研究
2.
The paper taked 20 nodes isoparametric element as an example and put forward a kind of numerical method combined with the Newton iterative algorithm and Gauss integral algorithm to calculate equivalent loads of prestress in body element.
本文以20节点等参单元为例,提出一种运用高斯积分和牛顿迭代法的数值算法计算实体单元的预应力等代荷载,该方法能够适应各种复杂的预应力钢束形状,并适合计算机编程。
3.
Using 8-nodes isoparametric element based on Mindlin plate theory and Newmark method,the dynamic responses of both thin and thick elastic plates resting on Winkler foundation subjected to moving load are analyzed.
采用基于Mindlin板理论的8节点等参单元和Newmark逐步积分法,对Winkler地基上的弹性薄板和厚板在移动荷载作用下的动力响应进行了分析,并与已有的薄板有限条法分析结果进行了对比。
2) isoparametric elements
等参单元
1.
In this dissertation,the principle of FEM in EM was discussed,then a three-layered pavement were analyzed with 4-noded isoparametric elements.
系统阐述了电磁场有限单元法的基本原理,然后采用四节点等参单元分别对三层路面系统进行了静态场和时变场的有限元分析,初步建立了路用探地雷达GPR电磁波在三层路面中传播的正演模型,同实测波形相比,模拟效果较好,并用Fortran90语言编制了相应的三维、二维有限元程序,具有较好的可读性和可移植性。
2.
In this paper, isoparametric elements of twenty nodes are used to calculate the body of Pulse Radar, and a 3-D FEM program was compiled.
采用二十节点等参单元对Pulse雷达实体进行有限元计算,用fotran语言编制了相应的三维有限元程序,根据系统识别原理建立了电磁波在Pulse雷达天线中全反射传播的正演模型,同时域有限差分法、时频域的FFT变换法相比,此结果更为精确、有效,便于工程应用。
3) isoparametric element
等参数单元
1.
In addition, the article also discusses the usage of isoparametric element for solving temperature distribution in heat conduction.
这篇文章致力于建立这种等参数单元的数学模型，进行形状函数偏导数的组合；此外，还讨论了应用这种等参数单元求解热传导温度场分布的方法。
4) isoparametric membrane element
等参膜单元
1.
In order to further enhance simulation precision of one-step forming finite element inverse approach,the four-node isoparametric membrane element was applied to it and the element warpage caused by the condition that the four nodes of special quadrilateral element may not be coplanar was modified.
为提高一步成形逆有限元法的模拟精度,将四节点等参膜单元应用于一步成形计算,并对空间四边形单元的四个节点可能不在同一平面引起的单元翘曲进行了修正,编写了计算机程序,对某轿车翼子板进行了实际模拟,通过一步模拟结果与增量法模拟结果和实验结果的对比,发现改进后的一步成形模拟结果与增量模拟结果已非常接近,而计算时间不到增量法的1/30,进而验证了本文方法的有效性。
2.
Under the prerequisite of not increasing the scale of calculation, to further enhance simulation precision of one-step forming finite element inverse approach, the four-node isoparametric membrane element is applied to one-step forming simulation.
在基本上不增加计算量的前提下 ,进一步提高一步成形逆有限元法的模拟精度 ,将四节点等参膜单元应用于一步成形计算 ,对空间四边形单元的四个节点可能不在同一平面引起的单元翘曲进行了修正 ,编写了计算机程序 ,对L形件进行了实际模拟 ,并将模拟结果与增量法模拟结果进行了比较 ,二者吻合较好 。
5) non-same parameter in an unit
单元非等参
6) 3-D isoparametric element
空间等参单元
1.
According to the theory of elasticity and piezoelectricity and the theory of three-dimensional finite element analysis,the global stiffness matrix of piezoelectric laminates is deduced by using the 3-D isoparametric element.
从弹性理论和压电学理论出发,根据三维有限元理论,采用空间等参单元,导出了压电层合板的整体刚度矩阵,并利用材料的物理和几何关系,对压电层合板的应力和变形做了计算与分析。
补充资料：长等短等
1.犹言左等右等。谓等待久。
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