ANSYS在《混凝土结构》教学中的应用

《混凝土结构》是一门理论与工程实际紧密联系的课程,并且构件受力复杂,同时各种混凝土构件的受力和破坏过程等内容,用传统的教学手段较难表述清楚。为了让学生直观地了解混凝土结构应力-应变的分布,变形和裂缝的发展及破坏的全过程,我们在《混凝土结构》教学中通过采用ANSYS仿真模拟,混凝土结构教学生动起来,使理论知识感性化、抽象知识形象化,提高教学效果。     

基于ANSYS/LS-DYNA的产品跌落仿真

对各种工业产品进行跌落测试数值仿真是ANSYS/LS-DYNA程序的-个重要的应用领域.作者以个人数字助理的有限元跌落仿真分析为例,讨论了ANSYS/LS-DYNA跌落测试模块(DTM)提供的数值仿真分析方法及实现过程.     

4V-105柴油机连杆有限元分析与优化设计

介绍4V-105柴油机连杆的工作概况,利用CAE设计分析程序ANSYS对连杆进行了有限元分析和优化设计。并对优化结果进行较详细的体积变化分析、对连杆进行相应的实验测试验证等。以验证连杆尺寸优化结果的合理性,最后得出了合理的连杆优化设计结果。     

Daily natural heat convection in a historical hall

The use of numerical simulation methods for the Cultural Heritage is of increasing importance for the analysis, conservation, restoration and appreciation of works of art. This is particularly important when their preservation and planned maintenance is the primary aim. Today museums, and particularly historical buildings converted to museums, should be considered as places where precious artefacts should have first-rate protection and conservation. It is a question of solving the compromise between protection, conservation and comfort for works of art and/or visitors, with the consequence that preservation and planned maintenance criteria must prevail over use requirements. Refurbishment and conservation of a building, and requirements for visitor presence and works of art need different thermo-physical indoor parameter values. The present paper concerns the thermal and air velocity analysis of the Salone dei Duecento (the Hall of the Two Hundred of the Palazzo Vecchio (Old Palace)) in Florence. In this paper an appropriate transient 3D model by Computational Fluid Dynamics (CFD) software based on the finite element method (FEM) was used. Variations and interaction between indoor and outdoor microclimatic conditions, and thermo-physical behaviour of the building connected to lighting, visitor presence and cooling–heating fan coils system were considered. The 3D modelling method provided by the present paper can be applied to several situations where there is interaction between outdoor and indoor climate variations and the building structure. It can be very useful for defining measures to preserve tapestries, understanding deterioration processes, and developing new conservation techniques and strategies for care and exhibition.     

浅谈ANSYS在钢筋混凝土构件受力全过程分析中的应用

文章着重讨论了ANSYS在钢筋混凝土构件全过程分析中钢筋混凝土材料的单元选择、材料特性、破坏准则等方面。说明只要合理选择单元类型、划分网格等,就能够得出比较准确的非线性特性曲线,从而达到减少设计成本、缩短设计和分析的循环周期、增加产品和工程的可靠性的目的。     

高超声速复杂流动中湍流模式的研究

研究了标准k ε模式 ,双尺度湍流模式 ,并对其在壁面附近作出长度尺度修正 在此基础上 ,选择了几个基准流动 :二维可压缩拐角、锥柱裙组合体绕流和斜激波 /平板湍流边界层干扰 ,进行数值计算 .通过数值计算和实验结果的比较 ,发现修正湍流模式对流动分离、摩阻和热流的计算具有更好的效果 .     

基于APDL参数化语言的斜拉桥的索力优化

利用大型有限元分析软件ANSYS的优化设计及结合其编程语言APDL对一座独塔单索面部分斜拉桥进行了索力优化设计,计算结果表明该方法简单、有效.     

超静定悬臂梁临界荷载的优化算法

在机械和建筑结构工程中,多为超静定结构问题,无法用解析方法实现多余未知力的求解。就此问题,基于微分方程的初值问题的求解原理,建立优化算法,求解多余未知力,获得变形曲线,并与有限元分析软件计算结果进行比较,验证本文优化算法的正确性。     

有限元强度折减法在边坡稳定性分析中的应用

采用有限元强度折减法与极限平衡法对边坡的稳定性进行分析,并对两者所确定的安全系数以及滑动面的情况进行比较,解决了极限平衡法不能反映坡体塑性变形趋势以及模拟的滑动面与实际不吻合的问题。     

CFD Analysis of Gas Distributor in Packed Column--Prediction of Gas Flow and Effect of Tower Internals Geometry Structure

Computational fluid dynamics (CFD) simulations were carried out on the gas flow patterns of twin-tangential annular deflector gas distributor in the absence of liquid flow in a packed column (6.4 m in diameter), and the gas flow field in the column was presented close to reality on the whole. Furthermore, after ame-lioration of this gas distributor frame, turbulence energy and turbulence energy dissipation rate were both decreased greatly.Simulation results showed that the flow pattern and the distribution of gas flow were strongly affected by the column bottom frame; the proper column bottom frame could decrease the flow pressure drop greatly. Multifold factors, such as the column bottom geometry structure and distributor structure which affects the distribution capacity, must be considered.