基于ANSYS与Solidworks Simulation的轴承通用支撑结构设计方案与应力分布的对比研究

本课题基于ANSYS与Solidworks Simulation的轴承通用支撑结构设计方案与应力分布的对比研究,既研究轴承通用支撑结构的合理性,也对比研究不同分析软件的可靠性。整体建模及受力分析的研究成果,对于进行关键零部件设计的从业者,尤其对有高要求的零部件强度的设计者,具很好的指导与参考价值。

Petrel2ANSYS: Accessible software for simulation of crustal stress fields using constraints provided by multiple 3D models employing different types of grids

Crustal stresses play an important role in both exploration and development in the oil and gas industry.However,it is difficult to simulate crustal stress distributions accurately,because of the incompatibilities that exist among different software.Here,a series of algorithms is developed and integrated in the Petrel2ANSYS to carry out two-way conversions between the 3D attribute models that employ corner-point grids used in Petrel and the 3D finite-element grids used in ANSYS.Furthermore,a modified method of simulating stress characteristics and analyzing stress fields using the finite-element method and multiple finely resolved 3D models is proposed.Compared to the traditional finite-element simulation-based approach,which involves describing the heterogeneous within a rock body or sedimentary facies in detail and simulating the stress distribution,the single grid cell-based approach focuses on a greater degree on combining the rock mechanics described by 3D corner-point grid models with the finely resolved material characteristics of 3D finite-element models.Different models that use structured and unstructured grids are verified in Petrel2ANSYS to assess the feasibility.In addition,with minor modifications,platforms based on the present algorithms can be extended to other models to convert corner-point grids to the finite-element grids constructed by other software.

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.

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.

基于ANSYS的有限元仿真在钢桁架管桥结构加固中的应用

针对钢桁架结构安全的传统评价方法的不足,以某钢桁架管桥加固工程为例,提出采用有限元软件ANSYS进行结构仿真计算的安全评价方法。通过仿真模拟分析出现状钢桁架管桥整体的最大位移大于规范允许值,需采取加固措施,然后对加固后钢桁架管桥的结构安全进行仿真计算复核,结果表明整体的最大位移和稳定满足要求。研究成果可为类似工程提供参考,为桁架结构安全鉴定及除险加固提供可靠的技术支撑。

基于ANSYS的采棉机分风箱应用研究

气力输送系统是采棉机工作部件中的重要系统之一,分风箱是气力输送系统中重要的组成部分,分风箱将风机出口处的风量分配给采棉机的采摘装置,分风箱结构对风机风量的分配起到重要作用。构建了两种不同结构的分风箱模型,采用ANSYS软件对不同结构的分风箱内部风速和风压的差异进行数值模拟,对分风箱的速度矢量云图、风压云图及各个出口平均风速进行了分析。结果表明,在能满足风速要求的前提下,模型Ⅱ的结构更加合理。

基于Ansys的曲柄滑块机构的运动学分析在教学课程中的应用

在机械原理的教学中,曲柄滑块机构的设计原理与方法是重点和难点问题,传统的实物实验对曲柄滑块机构的种类、复杂性都有很大的限制,不利于学生对曲柄滑块系统运行规律的掌握。基于此,利用Ansys中的workbench建立了曲柄滑块机构运动仿真模型,通过对模型进行分析设置,对典型曲柄滑块机构进行运动仿真,得出了曲柄滑块机构的位移及应力、应变的分析结果,为机械结构仿真教学提供了有效的方法。

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 Workbench的低温压力容器应变强化仿真

为全面评估低温压力容器在制造过程和服役条件下的安全性,使用ANSYS Workbench软件,对低温压力容器样罐的应变强化进行了非线性有限元仿真,并对在强化过程中加压、保压和卸压阶段的应变及变形情况进行分析。结果表明,仿真分析可为提升奥氏体不锈钢的利用效率,实现低温压力容器轻量化提供参考依据。

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.

Three-Dimensional Finite Element Numerical Simulation and Physical Experiment for Magnetism-Stress Detecting in Oil Casing

The casing damage has been a big problem in oilfield production. The current detection methods mostly are used after casing damage, which is not very effective. With the rapid development of China's offshore oil industry, the number of offshore oil wells is becoming larger and larger. Because the cost of offshore oil well is very high, the casing damage will cause huge economic losses. What's more, it can also bring serious pollution to marine environment. So the effective methods of detecting casing damage are required badly. The accumulation of stress is the main reason for the casing damage. Magnetic anisotropy technique based on counter magnetostriction effect can detect the stress of casing in real time and help us to find out the hidden dangers in time. It is essential for us to prevent the casing damage from occurring. However, such technique is still in the development stage. Previous studies mostly got the relationship between stress and magnetic signals by physical experiment, and the study of physical mechanism in relative magnetic permeability connecting the stress and magnetic signals is rarely reported. The present paper uses the ANSYS to do the three-dimensional finite element numerical simulation to study how the relative magnetic permeability works for the oil casing model. We find that the quantitative relationship between the stress' s variation and magnetic induction intensity's variation is: Δδ =K* ΔB, K = 8.04×109, which is proved correct by physical experiment.

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.

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.

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.

Multiphase Flow Simulation of New Vapor Distributor in Dividing Wall Column and Control Mechanism

A new vapor distributor based on the Coanda effect is added to the Dividing Wall column(DWC),and the multiphase flow simulation is performed using ANSYS Fluent by this model.The results show that with the addition of the liquid phase,the new vapor distributor still follows the Coanda effect.Hereby,the vapor is ejected from the slits of the distributor to take away the surrounding vapor,and a negative pressure is formed under the distributor,so as to achieve the purpose of regulating Rv.Analogously to the working principle of vapor distributor,a certain amount of vapor is drawn out from a position of prefractionator,which is equivalent to the vapor ejected by the distributor.The same amount of vapor is fed into the main column,which corresponds to the gas phase at the inlet of the distributor.The Rv is adjusted by changing the speed of the input or output vapor.Simulation results show that adding this control mechanism on the basis of temperature or concentration control structure can better achieve the effect of vapor distribution.

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。

Numerical simulation of deep-level rockburst in Fuxin coalfield

On the basis of ANSYS finite element model(FEM) software, the deep-level rockburst in Fuxin coalfield was simulated numerically. Based on Haizhou Mine and Wulong Mine as two typical deep-level rockburst examples in Fuxin coalfield, the rules and characteristics of the deep-level rockburst were analyzed. And the models were es- tablished. For Haizhou mine, the relationship between mining distance and rockburst was presented when 100, 300, 600 m were mined in 3313 working face. When 300 m were mined, the rockburst began to emerge. When 600 m were mined, the rockburst was the most possible to happen and the compression stress of the working face reached to the maximum value. The effect of tectonic stress on synclinal axis is also a key factor to rockburst occurrence. This was verified by the rockburst happened when 496 m were mined. For Wulong mine, based on the 311 working face as an example, the contours of Y stress in the roof and floor were obtained when the mining distance were 100, 200, 300 and 400 m. When 100 and 400 m were mined, the high stress con- centration regions occurred in the front of working face. This shows the rockburst is easy to happen. It is confirmed by the rockburst when 91m were mined in 311 working plane. The above indicates that the numerical simulation has instructive rule to study the deep-level rockburst in Fuxin coalfield.

基于ANSYS-FLUENT的云南某锡矿尾砂料浆管道输送设计研究

以云南某锡矿井下充填管道为对象,经流变实验获得了该矿山全尾砂流变参数,并采用布金汉方程对尾砂料浆阻力损失进行了初步计算,最后运用ANSYS-FLUENT软件进行了模拟计算,并对模拟结果进行了深入分析。结果表明,较优方案为C1,即水泥量为300 kg/m^(3),质量浓度为72%的尾砂料浆能够在管道内安全输送2600余米,充填流量可达110 m^(3)/h,满足了矿山井下充填制备站至各采场空区的充填需求,确保了充填系统的安全、可靠和高效运行。进一步研究分析发现,在管道内输送的尾砂料浆速度和压力存在边界层效应;管输阻力损失随尾砂料浆的屈服应力及黏度的增加而增加,并得出了阻力损失与屈服应力及黏度之间的关系表达式。本文针对充填采矿法中矿山尾砂料浆合理、安全地管道输送,制定了简便高效的计算、模拟和分析方法,为充填采矿法的实际应用提供了有益指导。

基于ANSYS的真空热处理炉的温度场分析

利用ANSYS Workbench软件分析了管式真空热处理炉炉膛内部温度场分布,通过模拟隔热层放置位置/厚度、工件盒厚度/材质、筛网厚度/材质对炉膛内部均温区范围及其平均温度的影响,获得了不同热处理炉隔热层、工件盒与筛网的设计参数;通过优选设计参数,可使均温区长度从240 mm提升至320 mm,提升了33.33%,平均温度从958.25℃提升至962.94℃。最后采用优化后的热处理炉结构参数对负载Nd2Fe14B试样的温度场进行了仿真。结果表明,Nd2Fe14B永磁体的均温区范围及平均温度得到了明显提升,磁体平均温度从959.07℃提高到963.06℃,且磁体的温度起伏明显趋于平稳,从±1.06℃优化至±0.21℃。