two-dimensional element

Objeclive: To establish a two-dimensional finite element analysis model for hard tissue morphology on frontal cephalometric-ray film.

〔摘要〕目的: 建立 X 线头颅正位定位片硬组织形态二维有限元分析模型.

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A boundary element method for two-dimensional transient elasto-dynamics is investigated.

本文介绍了一种二维瞬态弹性动力学边界单元法，并用此法研究了不同裂纹长度中心裂纹板在不同载荷下的动应力强度因子。

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Research results: The analysis process of frame bridge with skew angle has been given by use of MIDAS. We obtained the outcomes from two models and the difference between results with 2D rigid frame and 3D space model of thick plate element.

研究结果：给出了用MIDAS分析斜交框架桥的详细分析过程，得出斜交框架桥三维空间模型和二维平面模型分析的结果，并得出2种模型计算结果的差别。

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Two parameters of the crack dynamic propagation driving force, energy release rate and crack tip opening angle, are calculated by establishing a finite element model of the crack dynamic propagation in gas pipelines and considering the attenuation of the crack propagation velocity.

通过建立输气管道裂纹动态扩展的有限元模型，并在模拟计算中考虑裂纹扩展速度的衰减，分别计算了表征动态裂纹扩展驱动力的两项参数&能量释放率和裂纹尖端张开角；

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Firstly , two-dimensional u ～ U and u ～ p finite element programs were developed in Compaq Visual Fortran 6.6 environment.

基于CompaqVisualFortran6.6环境, 开发了二维广义Biot理论 u～U与u～p形式有限元数值求解程序.

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Structural design section, this article discusses the structural design of the thermal compensation allows the calculation of the span within the pipe bearing between the transformation between the two adjacent steam inlet of heat exchanger design and finite element analysis of block board.

结构设计章节，本文论述了热补偿结构设计、内管管承之间允许跨距的计算、换热器两相邻蒸汽进口间的改造设计和堵板有限元分析。

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Objeclive: To establish a two-dimensional finite element analysis model for hard tissue morphology on lateral cephalometric-ray film.

〔摘要〕目的: 建立 X 线头颅侧位定位片硬组织形态二维有限元分析模型.

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Two generalized conforming quadrilateral thick plate elements are developed in this paper. A QUADRILATERAL THIN-THICK PLATE BENDING ELEMENT BY USING AREA COORDINATE METHOD

本文构造两个广义协调四边形厚板元ATF-PQ4a和ATF-PQ4b。采用面积坐标的四边形厚薄板通用单元

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The application of the Natural Element Method ( NEM) to problems in two-dimensional elastostatics is presented.

介绍自然单元法（NEM）在处理二维弹性力学问题中的应用。

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Thermal buckling is a common problem for large flexible space structures consisting of thin-walled open section beams. A two-node thin-walled open section beam element was developed with a warping degree of freedom.

针对含开口薄壁杆件的大型空间柔性结构热屈曲问题，发展了一种包含翘曲自由度的二节点开口薄壁杆单元。

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The examples, including truss, beam, plate, two-dimensional element and three-dimensional element, indicated that accuracy of dynamic displacement sensitivities reached up to 97%.

程序在计算包括杆、梁、板、二维、三维单元在内的所有算例时，动力位移响应的灵敏度精度均可达到97%，并且迭代次数少，求解效率高。

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