有限元法

This paper presents a nonlinear analysis of the stresses in jointed rocks around a subterranean structure by the initial stress method. In this analysis, rocks with a parallel set of joints of a given predetermined orientation are idealized as a stratified. material with no shear between the strata j and rocks with a random set of joints are idealized as a tensionless material.

本文将具有一组定向节理的岩体理想化为层面不抗剪材料，将具有随机分布节理的岩体理想化为不抗张材料，采用初应力法，对节理岩体内地下工程围岩应力做有限元非线性分析，编制了通用程序，并根据某水封石洞油库的实际参数作了算例。

FEMOL is systematically applied to various moving boundary problems, including: membranes contact with rigid foundation, shape optimization of cross-sections of elastic torsional bar, seepage through a dam with a free surface, Mindlin-Reissner plates contact with rigid foundation, free Mindlin-Reissner plates on tensionless

三、将有限元线法分析推广应用到了一系列的动边界问题中，包括：薄膜接触问题，弹性扭转杆的截面优化问题，自由液面的稳定渗流问题，中厚板理论与刚性地基的接触问题，无拉力Winkler地基上自由中厚板问题，理想弹塑性扭转问题，理想弹塑性Ⅲ型裂纹问题。

Othendse, the discreet element method isalso a rather popplar method to deal with uncontinuous media, eSPeCially theso-called discreet medias that consists of rock blocks, granlars and so on.

将不连续面以节理单元模拟是目前有限元计算中最常用的一种方法，此外，离散单元法也是针对不连续介质的一种已相当成熟的计算方法。

Analysis one-way aerodynamic and strength fluid-solid interaction of an unshrouded centrifugal impeller blade under different conditions.

采用非结构化网格有限体积法和有限元方法，进行了不同工况半开式离心叶轮叶片单向气动与强度流固耦合分析。

This method has been applied to the stability analysis of the deep foundation of Wudu reservoir dam and the computational results are shown to be satisfactory by comparison with the conventional limit equilibrium method and the strength reduction FEM, which has been adopted in the design of dam foundation treatment.

将这种新的极限平衡方法应用于武都水库坝基的深层抗滑稳定性分析，并与传统的极限平衡法及有限元强度折减法进行比较，计算结果满意，并被坝基加固设计所采纳。

Oran Beam-Column element converges very difficultly in nonlinear stability analysis of pure bending problem...

法在求解以轴力为主的结构时效率不如梁柱理论有限元高。

Unsymmetric gear ; pressure angle ; tooth face contact stress ; analytic method ; finite element analysis

非对称齿轮；压力角；齿面接触应力；解析法；有限元分析

Because operating rigid frame bridges have chief diseases at present. A diseasing bridge is evaluated by using analytic hierarchy process and expert evaluation combined factor method at first, then the reinforcement measure is studied based on evaluation consequence, the calculation of internal force and deformation are carried Out by the finite element method, and the evaluation analysis of reinforcement effect is done by calculation result.

针对目前正在运营的刚架混凝土拱桥出现的主要病害，首先利用基于层次分析及专家评估的变权综合系数法对一实际病害桥梁结构进行了评估，然后根据评估结果对该桥的维修加固措施进行了研究；采用有限元方法对桥梁加固后的内力和变形进行了计算，并根据计算结果对该桥的加固效果进行了评估分析。

On the basis of solute transport theory, the coal gangue eluviated in Xinqiu in Fuxin coal miming area was studied for the pollution of groundwater. The mechanism of coal gangue eluviated in the aquifer was analyzed. A coupled numerical model was developed with convection、sorption and dissolve、disintegration for simulating the leachate transport in groundwater. The model was discreted by using a Gelarkin finite-element method and a Picard iteration scheme, and the process of coal gangue leachate was presented, which predict the temporal and spatial distribution features of contaminant concentration. The result indicates that the contaminated plume is continually extended as time increases, and the vertical diffusion is more abvious.

以溶质运移理论为基础，针对阜新市新邱露天煤矿煤矸石淋滤液对地下水污染实际情况，分析了煤矸石渗滤液在含水层中运移的规律，在综合考虑对流扩散、吸附解吸、生物降解条件下建立了淋滤液在地下水中运移的耦合动力学数学模型，采用Galerkin有限元方法和Picard迭代法相结合对耦合模型进行了离散，模拟了淋溶液对地下水污染的动态过程，预测了污染浓度的时空分布特征，并结合实际观测数据进行对比。

Based on theoretical analysis, a three dimensional non-linear finite element program is developed to examine the effects of alleviating bridge approach differential settlement by emplacing geogrids in the backfill behind bridge abutment. After analyzing the character of stresses and displacements within backfill behind bridge abutments and the interfacial friction action between geogrids and fillings, mechanism of using geogrids to reduce differential settlement is obtained.

在理论分析的基础上，利用有限单元法编制了土工格栅处理路桥过渡段差异沉降的三维非线性有限元程序，并结合工程实例对台背回填的三维性状进行系统分析，研究了铺设土工格栅对台背填土位移场和应力场的影响，分析了土与格栅界面剪应力的大小和分布，从土与格栅的界面作用阐述了减小沉降差的机理。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。