When we solve the several medias problem , the medias " coefficient is constant . so we can solve the problem in each several fields . we can divide the field into several small areas , and the medium coefficients are constant and different in each small areas 在求解多介质问题时，介质系数在不同部分为不同常数，因此可以对求解区域进行单元分析，即可把整个区域分为若干部分，其中每部分中的介质系数为常数，且各不相同。
Based on characteristics of the whole manufacturing process enclosed the winding , cure and autofrettage processes for the composites filament wound vessel with metal liner , a methodology for the prediction of the induced process stress field has been developed 摘要基于具有金属内衬复合材料缠绕容器缠绕、固化和预超压3个制造工艺过程的特点，提出一种温度参数当量法模型和虚实单元分析策略，以模拟在缠绕预张力工艺中的力学行为。
The electromagnetic field theory and the variation method is applied to found the 2d mathematics model during the process of starting of the induction machine with compound cage rotor . the dispersion , element analyse and collectivity composing of time - variation field are given 利用电磁场理论和变分法建立了复合笼条转子感应电动机起动时二维电磁场的数学模型，给出了正弦时变场单元分析过程和离散格式以及最终的总体合成方程。
This differ with computation modal that design the foundation pier very big , bearing power too than design increment ; usage mechanics numerical analysis device with limited a logarithm of timw fitting method logt , noted the rock strength in stake tip of the borehole cast - in - place concrete pile to proceed with the structure steadiness the simulation compute to study with the fixed amount , designing for the engineering to start construction to provide for science with the spot 本研究结合现场试验、力学数值分析和有限单元分析，对岩溶地段钻孔灌注桩的施工工艺、荷载传递机理、持力层顶板厚度及嵌岩深度等方面作一些探讨性研究，为该工程的设计和施工积累经验，并为该类课题的进一步研究奠定了基础。
Abstract : finite element method of tire temperaturefield is introduced in th is paper . temperature distribution curves of tire 9 . 00r20 underspecific conditio n are given . the results will provide theoretical basis for developingnew tire a nd optimizing tire structures 文摘:介绍了轮胎温度场的有限单元分析方法，分析了9 . 00r20子午线结构轮胎在特定条件下的温度场分布情况，给出了温度场分布云图和温度分布曲线，目的是为轮胎的研制开发提供可靠的理论依据，以便优化轮胎结构
Based on the fem program on fracture of plane structure developed by professor fu xiaoling of ho hai university , a two demension damage and fracture finite program package which is programed in fortran 90 language is developed . the paper adopts the plane - eight - nodes isoparameters element and compute the developing law of the damage and macro - damage of plane structure under load . considering the original damage and tension and compression damage at the same time , the paper adopts the more reasonable concrete constitute relation of two demension and exponent function model 在河海大学符晓陵副教授所编制的平面结构断裂有限元程序（ dl08p4 ）基础之上，本文用fortran90语言编制的二维损伤-断裂有限元程序包，程序采用平面八结点等参数单元分析计算平面结构在外荷载作用下损伤及宏观裂缝的发展规律，考虑了混凝土结构体内存在着初始损伤和同时存在的拉、压损伤，并且采用更为合理的具有损伤含义的混凝土二维本构关系（即正交异性损伤模型中的本构方程）和指数函数模型建立的并可进行拉、压损伤可比性换算的损伤演变方程，较为真实地反映了实际情况。
This part defines webometrics as a new cross marginal discipline , discusses its formation background and major research objects . it exemplifies in detail the major research methods , such as linking analysis and content unit analysis , which are different from previous measurement research in other fields . it also dwells on some research instruments used in webometric research : search engine , database and computer soft , etc . part iii : the applications of webometrics 从学科角度论述网络计量学产生背景、此学科的主要研究对象，详细说明应用链接分析法、内容单元分析法、分形与信息计量来进行有别于其他学科的计量研究的主要研究方法，并具体介绍了利用搜索引擎、数据库、计算机软件进行网络计量研究的研究工具。
The main research works and conclusions of this thesis are listed as follows . the dynamic analysis model of elastic mechanism system with damping alloy parts is deduced based on the relationship between stress and strain of the material , also the analysis model under viscous damping model , complex damping model , nonlinear damping model and viscous - elastic damping model is put forward using the finite element method 本文的主要研究工作及结论如下：从材料应力应变本构关系出发，导出了滞变阻尼模型、复阻尼模型、非线性阻尼模型、粘弹性阻尼模型下的有限单元分析模型，进而给出了含阻尼合金构件弹性连杆机构系统动力学模型。
For having a directly perception to the influence of interaction , the author completes program of calculating huge structure ' s dynamic properties which worked out by fortran language , and employ 3d incompatible isoparametric element figures out the dam properties in the condition of rigid foundation meantime . further the author calculates dynamic displacement of dam in software of matlab , ansys 为了对动力相互作用影响有一个直观的认识，作者完成了fortran语言编制的计算大型结构动力特性程序，并采用三维8结点非协调等参单元分析了坝体在刚性地基情况下的动力特性，并在matlab 、 ansys中计算了坝体的动位移时程曲线。
