底框架剪力墙-砌体结构受力性能分析

本文通过对底部框架剪力墙-砌体结构采用ANSYS有限元软件进行建模,简化砌体结构的模型参数,然后进行模态分析,并在重力荷载和水平荷载作用下,采用时程分析法,对结构进行受力和变形分析,满足规范要求。     

基于ANSYS/LS-DYNA的铜板矫直有限元分析

介绍了在有限元理论分析的基础上,对整个矫直过程建立了符合实际工况的理论模型、边界条件及摩擦类型等,运用ANSYS/LS-DYNA软件对17辊上辊全可调式铜板矫直机的矫直过程进行动态模拟,得出相关的分析结果。     

Numerical Analysis of Influencing Factors on Temperature Field and Airflow Distribution of the Displacement Ventilation System

Indoor air quality and thermal comfort are important features of indoor environment, In this paper, a numerical simulation based on the k-ε model of CFD is used to analyze factors such as loading, exterior-protected construction, blowing-in rate that play an important role in the temperature field and airflow field of the displacement ventilation system. Exterior-protected construction has little influence on indoor temperature distribution of displacement ventilation systems and the influence is limited only in a small area near the external wall when the indoor heat source is the main cooling load. The height of a room has little influence on indoor temperature field, and the temperature gradient of active region is basically unchanged. In the system combined with a displacement ventilation system and a cooling system, the height also has little influence. When the cooling load is high,the indoor heat source creates a strong convective plume, which will make the average indoor air age lower, the ventilation efficiency higher and the elimination of pollutant easier. Air supply rate plays an important role in displacement ventilation systems. The increase of air supply rate that can be realized by increasing the air supply velocity and enlarging the area of air inlet will increase the mass capability of the system and diminish the vertical temperature gradient. From the comparison between simulations and experiments, it is concluded that this simulation are creditable.     

物流分拣机升降装置的结构分析与优化

物流分拣机中升降装置需高频率的上下往复运动,其剪叉臂孔与轴配合部位常出现磨损现象。本文从剪叉式提升机构经常出现问题的部件入手,采用了先进的数值模拟软件ANSYS,利用虚拟仿真手段,分析其可能出现故障的位置及故障方式,提出物流分拣机剪叉式提升机构的改进措施。     

Optimization study of a PEM fuel cell performance using 3D multi-phase computational fluid dynamics model

INTRODUCTION Water management is one of the critical opera-tion issues in proton exchange membrane (PEM) fuelcells. Spatially varying concentrations of water inboth vapour and liquid form are expected throughoutthe cell because of varying rates of production andtransport (Sui and Djilali, 2005). Devising betterwater management is therefore a key issue in PEMFCdesign, and this requires improved understanding ofthe parameters affecting water transport in the mem-brane. Proper thermal m…     

蜂窝结构抗剪性能实验研究及其数值模拟

蜂窝结构以优异的力学性能,如比刚度大、比强度大、重量轻、良好的隔音隔热等,在建筑、工业锅炉、航空等结构中得到广泛的应用。抗剪性能是蜂窝结构主要力学性能之一,本文利用剪切实验和四点弯曲实验对PVC材料的圆形错排蜂窝结构的等效剪切模量及抗剪强度进行了实验研究,并利用有限元软件ANSYS对两种实验进行了三维有限元数值模拟。两种实验测得的等效剪切模量结果和数值模拟结果比较吻合。结果表明可以通过数值模拟对蜂窝结构的力学性能参数进行估算,并通过数值模拟为实验设计和工程实际设计理论依据和指导。     

浅谈VB在ANSYS二次开发中的应用

ANSYS作为世界知名的CAE(Computer Aided Engineering计算机辅助工程)软件,受到国内外工程人员极大的欢迎。介绍如何使用VB对ANSYS软件进行简单的二次开发以及如何将它们(VB和ANSYS软件)进行连接,为工程人员学习和使用ANSYS软件提供了一种思路。     

基于VB的ANSYS二次开发

基于VB和ANSYS提供的二次开发工具APDL,开发数值分析程序。借助VB前台开发友好、方便、易用的人机交互界面,提高了分析效率,并为类似问题的解决提供了一条新途径。     

应用APDL语言讲授ANSYS热分析技术

封装复杂的参数设置和操作步骤,编写ANSYS命令流提供给高职材料成型与控制专业学生,方便地进行各类传热学运算。通过稳态热分析、无相变的瞬态热分析、包含相变的瞬态热分析等实例,结果形象直观,学生印象深刻,教学效果好,有利于优化高职学生的知识结构。     

Numerical study on viscosity reduction in mining heavy oil by circulating hot water

Viscosity reduction is an important process in mining heavy oil.To predict the temperature variation and viscosity variation of heavy oil in flow direction,computational fluid dynamics(CFD) was adopted to simulate the process of heat transfer and flow in this paper.Moreover,an objective function,namely viscosity reduction efficiency,was established to analyze the effect of viscosity reduction.The results indicate that circulating hot water can reduce viscosity significantly,and that the effect of viscosity reduction depends on the inlet temperature and inlet volumetric flow rate of hot water.There is a maximum temperature of heavy oil in flow direction.With the inlet volumetric flow rate of 2.0m3/h and the inlet temperatures of 60,℃,70,℃ and 80,℃,viscosity reduction efficiencies are 94.6%,96.7% and 97.3%,respectively.With the inlet temperature of 70,℃ and the volumetric flow rates of 1.5m3 /h,2.0 m3/h and 2.5m3/h,viscosity reduction efficiencies are 94.4%,96.7% and 97.2%,respectively.