基于ANSYS Workbench的行星轮系高楼逃生器动力学研究

为进一步提高行星轮系高楼逃生器的使用性能,开展了行星轮系高楼逃生器的动力学研究。首先,采用Solidworks三维软件对行星轮系进行建模;其次,采用ANSYS Workbench对模型进行仿真,分析其受力情况;然后,探讨行星轮系高楼逃生器在传动过程中的动力学、动态力矩平衡等问题;最后,根据分析结果对设备进行优化。实验结果表明,优化后设备的受力情况得到明显改善,使用性能得到大幅提升。

基于ANSYS的竹篼破篼刀具设计与仿真

为降低破篼刀具的工作能耗及解决破篼刀具工作半径不可调的问题,设计一种工作半径可调以实现从竹篼内部破篼的刀具。首先在ANSYS中建立竹篼-破篼刀具有限元模型,然后进行破节、破壁仿真并做试验分析,最后构建试验平台加以验证。结果表明:所研制的破篼刀具可清理外径为110~130 mm的竹篼;破节最优的刀具参数组合为:轴向刀后角角度为30°、刀盘转速为5 000 r/min;破壁的刀具参数组合为:径向刀后角角度为20°、刀盘转速为5 000 r/min。

Simulation of Cobalt-Rich Crust’s Crushing Process Based on ANSYS

It is a great concern in international oceanology to mine cobalt-rich crust. At present, spiral mining head is regarded as the best crushing scheme. Based on the dynamic model of spiral mining head, the of cobalt crust’s crushing process was simulated with the ANSYS software. The material model of Johnson and Cook Plasticity, maximal princi- pal stress failure criterion, and eroding contact arithmetic were selected. At the same time, the influence of cutting depth, feed speed, rotational speed of mining head on torque and force subjected by mining head was taken into account. At last a computer simulation model of crushing process of cobalt crust was established. By analyzing simulation results, the relationships among these controllable process parameters, torque and force can be obtained, which will provide a technical reference for practical mining system.

基于ANSYS的物理气相沉积真空装置力学分析

PVD用真空装置是实现真空镀膜试验的重要设备,必须保证真空装置在实际工况和载荷的作用下十分安全可靠,不发生破损事故。文中采用ANSYS软件对真空装置建模、划分网格、确定边界,并施加实际载荷、地震载荷,计算在设计工况、正常工况、异常工况及事故工况下的应力值。采用计算值对原有的设计进行了修正,将壁厚从原始设计14 mm改为10 mm,节省了9%的不锈钢材料。修改后的设计方案仍可满足RCC-M规范要求。

FEM simulation of formation of metamorphic core complex with ANSYS software

This study utilizes ANSYS to establish FEM's model of metamorphic core complex,and used thermal-structure analysis to simulate metamorphic core complex's temperature field and stress field.The metamorphic core complex formation mechanism is discussed.The simulation results show that the temperature field change appearing as the earth surface's temperature is the lowest,and the temperature of metamorphic core complex's nucleus is the highest.The temperature field is higher along with depth increase,and the stress field change appearing as the biggest stress occurs in the nucleus.The next stress field occurs at the top of the cover.

Numerical Simulation of Powder Injection Molding Filling Process Based on ANSYS

A mathematical model of two-dimensional flows of PIM derived from the momentum, continuity equations and theheat transfer equation is obtained. The formula of calculating the flow conductance and the pressure equation arededuced when the no slip boundary condition is employed at the wall, and the pressure equation is a non-linearelliptic partial differential equation. The flow front locations, distribution of velocities, temperature and pressure aresimulated by the finite element analysis software ANSYS. Simulation results indicate that it is in the final filled partthat defects appear easily. The region in which the defects may occur during the PIM process can be predicted.

ANSYS软件在飞行原理教学中的应用研究

ANSYS软件是目前应用最为广泛的有限元计算程序之一。在飞行原理教学中引入ANSYS软件,既可以扩展学生的知识面,又可以利用该软件Fluent插件强大的流体分析功能、形象而直观的图形显示特点,增进学生对基本概念、原理及空气动力学现象的理解,加深对飞机不同翼型条件下流场及气动力分布规律的认识。以二维多段翼流场、机翼绕流流场、机翼增升等课程为例,阐述ANSYS软件在飞行原理教学中的优势。

基于“Ansys Fluent+BIM”的区域环境仿真模拟分析——以上海市金山区某拟建项目为例

以上海市金山区某拟建项目为例,为分析区域环境对其产生的影响,采用Ansys结合物呈线条状扩散,有效影响范围可达到10km以外。同时,基于空气质量指数(AQ)对污染物来源、污染物性质等在不同风向和风速下进行最不利气象条件仿真模拟,得出结论并提出应对措施。成果可为拟建项目的环境影响评价提供参考,也可为沿岸化工厂排放口设置及功I能优化提供一定的理论指导。

基于Ansys Workbench的火箭支架结构拓扑优化设计

为降低火箭消极质量,以发动机支架为研究对象进行轻量化设计,基于Ansys Workbench软件,采用实体变密度方法,以结构柔度最小化和固有频率最优化为目标,对支架模型进行拓扑优化。经多个方案的迭代,最终以重构模型质量减轻35%达到轻量化设计目标,为火箭部组件结构设计提供参考。

基于ANSYS软件的国外某四边形管片有限元计算

近年来,TBM被广泛用于长距离输水隧洞施工。平行四边形管片具有体形简单、止水安装易满足密封要求、受力均匀、方便施工等优点。国外某长引水隧洞工程隧洞内径6.8 m,采用四边形管片,管片厚0.25 m,环宽1.6 m。为了分析管片受力情况,采用ANSYS软件建立三维有限元模型,采用欧洲规范,分析管片在各种工况下的应力应变特征,判断是否满足规范要求,为后续衬砌结构配筋及项目安全施工提供依据。

基于ANSYS的液压锚杆钻机回转机构优化

针对当前液压锚杆钻机回转机构的抗冲击能力弱、稳定性差、易损坏等不足,提出了一种基于ANSYS的液压锚杆钻机回转机构优化方案。通过分析液压锚杆钻的结构和凿岩原理,以回转机构的齿轮为研究对象,利用遗传算法结合ANSYS系统来完成齿轮关键参数的优化、三维模型的构建以及仿真分析。实验结果表明:优化后的回转机构起动过程较为平稳,稳定后的齿轮啮合接触力为960 k N,降低了齿轮发生损坏的概率;起动稳定后齿轮最大应力值为402.52 MPa,抗冲击能力提升明显。

捆扎带剪切机构设计与ANSYS仿真

针对铜板垛捆扎钢带去除过程中的效率低、劳动强度大的现状,分析铜板垛捆扎带去除的工艺流程,进行捆扎带去除机构设计。利用SolidWorks软件建立捆扎带剪切部件的三维模型,根据剪切工作空间和剪切倾角初定剪切机构尺寸,利用机构作图法展示剪切机构的结构和运动情况,结合ANSYS软件进行仿真分析,以最优传力性能为目标,确定连杆最优尺寸。对工程实际具有一定的指导意义,为铜板垛的捆扎钢带去除提供一种新思路。

基于ANSYS的波纹管波形参数对平面失稳影响的分析

为了研究波纹管波形参数对波纹管平面失稳的影响,使用ANSYS软件建立了波纹管的有限元模型,对不同波形参数下的波纹管有限元模型进行了模态分析与特征值屈曲分析。有限元计算结果表明,增加波纹管的壁厚和波距,或者减小波高,会使波纹管的固有频率和屈曲载荷增加,因此在波纹管设计时,在满足综合性能情况下,可通过在一定范围内增加波纹管的壁厚和波距,或者减小波高的方法减少平面失稳的发生;同时模态分析求出了波纹管的固有频率和振型,可以避免在工程作业中,因为外界振动频率与波纹管固有频率相同而发生共振现象,致使波纹管发生平面失稳,为工程设计提供有效参考。

基于ANSYS仿真的某舰载监控设备故障分析与优化设计

舰载监控设备工作时受舰载振动环境影响,会出现设备因抗振性不足,导致监控失效的问题,严重影响产品可靠性。通过试验可发现部分明显的设备缺陷,但无法完全定位所有问题,为解决这一问题,本文通过使用ANSYS软件对某舰载监控设备进行有限元仿真,通过数据分析进行故障定位。同时通过仿真结果提出解决方案,优化产品设计,并通过试验验证优化结果,使产品满足舰载振动环境指标,可靠性得到较大提升。

3D FEM numerical simulation and experimental study on symmetric thin-wall tube neck-spinning

A 3D FEM model for symmetric thin-wall tube neck-spinning is established. The spinning process is simulated by means of ANSYS software, and the dynamic boundary and contact problems in simulation are solved. The transient stress distribution of contact area, the transient strain distribution of nodes in typical section and the strain distribution of the whole part at last are attained, and the place and the cause of crack are analyzed. Simulation results show how the strain distribution of typical section, the thickness of some typical nodes, the Z coordinate in typical section and the spinning force of three rollers change with the time. According to study the variation curve, the material flow law along radial, tangential and axial direction is attained and the whole spinning process is studied. The experiment data reflect how the spinning force is influenced by different process parameters, such as feed rate, roundness radius and pass reduction. The simulation and the experiment results supply criteria for optimum design and reasonable parameter selection.

基于ANSYS的垂直循环式立体车库设计与分析

综合各类立体车库的优缺点,设计一种利用地上空间建造的垂直循环式立体车库,主要包括主框架、升降系统和循环系统等机构。基于有限元仿真分析软件对升降系统主要零件进行强度和刚度校核,计算载车板的应力应变分布情况,并对链传动部分进行静力学和瞬态动力学仿真分析,验证运行过程中的可靠性。结果表明,此垂直循环式立体车库结构合理,存取车效率高,且性能可靠。

Numerical Simulation and Optimization Design of Electromagnetic Fields in the Electromagnetic Casting of Copper Round Billet

Electromagnetic casting technology became maturity and gained wide applications in steel-making and aluminum casting, which is still immature in copper casting. Electromagnetic continuous casting with soft-contact mold was employed to produce copper round billet with high density. At the same time, in this paper, a mathematical model of the electromagnetic field in the soft-contact mold was built on the base of the vector potential method, then it was solved by the ANSYS commercial FEM software. Current and frequency was altered in the course of operation so as to find out how they effect the magnetic field distributing. Its accuracy was verified by the measurement result of the electromagnetic field in the mold without billet. By this model, the effect of excitation current on field was gained, which set up a certainty foundation for more research.

Numerical simulation of blasting effect with divided charge structure

This paper numerically simulates the stress development and generates a three-dimensional model of the medium-length hole blasting in infinite rock mass for continuous charge and divided charge in blasting by using the large-scale nonlinear dynamic analysis software LS-DYNA and the elastic-plastic model ~*MAT_PLASTIC_KINEMATIC and JWO-EOS.The differences of the decreasing rate in Von Mises effective stress of blasting,element effective stress peak of free surface,bore wall stress and acceleration are investigated.It is shown that divided charge could greatly improve the blasting effect by engineering blasting practice.

基于ANSYS LS-DYNA水下爆破阻波帘的设计与研究

水下爆破试验危险性大、成本高,在实验室进行相关试验项目对设备和场地的要求非常严格,每次试验都要按照相关程序进行审批。针对目前爆破试验程序繁琐及等待周期长等现状,以水下爆破防护为研究对象,应用碰撞振动仿真技术设计水下爆破阻波帘,使设计的产品在尽可能少的水下试验次数下达到满意的效果。采用ANSYS LS-DYNA模块,使用不同材料做成的阻波帘进行防护仿真。在距爆炸点5 m,压强为7.5 MPa的位置进行数据采集,对比分析帆布阻波帘与其他5种不同材料的阻波帘的爆轰波减小系数。仿真结果表明,阻波性能从高到低排序为:空气泡、多孔铝板、汽车轮胎、泡沫塑料、石棉布。其中空气泡的阻波帘,在1 kg TNT当量工况条件下,距爆炸点5 m,压强为0.22 MPa处,压强降低率达到97%,防护效果最好。

3-D Finite-Element Numerical Simulation of Centrifugal Induction Electrosalg Casting Solidification Process

A 3-D finite-element numerical simulation model of temperature field for CIESC casting solidification process was developed with the aid of ANSYS software and a series of corresponding experiments were made. The results showed that the good agreement was obtained between the numerical simulation and the experiments. Based on the numerical simulation results, the characteristics of temperature distribution in the castings during CIESC solidification process were analyzed and summarized. According to the G/R-1/2 method and numerical simulation results, there is no any shrinkage defect in the CIESC casting and structure or casting is fine and compact.