共查询到17条相似文献,搜索用时 312 毫秒
1.
随着计算机技术的飞速发展 ,有限元设计方法的应用领域日益扩大。美国的 AN-SYS有限元软件经过多次升级换代 ,已发展为集计算机绘图、优化设计、可靠性设计为一体的功能齐全、计算速度快、精度高的先进软件 ,成为国际工程设计的主流软件。本文应用 ANSYS有限元软件对 SG1 8钻塔进行了风载受力分析 ,并和克 -马图解法进行了比较 ,从而说明 ANSYS有限元软件用于构架设计是完全可行的 ,且精度更高。 相似文献
2.
采用ANSYS结构分析软件,对重轨定径小变形进行了变形物理场分析。通过建立较好的三维重轨有限元模型,分析了在位移载荷下的弹塑性应力、应变和位移分布,结是表明用ANSYS计算分析的结果与实际定径实验的结果相符。 相似文献
3.
4.
为进一步明确亥姆霍兹线圈所产生磁场的近场特性,文中尝试采用基于有限元方法的ANSYS软件对亥姆霍兹线圈进行了分析,首先采用ANSYS软件对亥姆霍兹线圈进行三维实体有限元模型和仿真,并将结果与用MATLAB语言绘制磁感应强度的空间分布图进行比较.仿真结果说明ANSYS有限元模型优于MATLAB语言,并且通过实验验证了所建的三维亥姆霍兹线圈有限元模型的有效性和正确性. 相似文献
5.
6.
为了保障高压自紧式卡箍密封结构安全应用,对高压自紧式卡箍结构的受力进行分析,探讨了高压自紧式卡箍结构的密封机制,采用有限元分析软件ANSYS,以公称直径150 mm高压自紧式卡箍密封结构为例,进行了结构强度仿真。结果表明,高压自紧式卡箍密封结构呈双重密封结构,满足强度要求。密封环和管接头在管道轴向密封以及管道周向密封构成了双重密封结构,其中密封环和管接头接触压力远大于传统法兰结构的密封比压。 相似文献
7.
8.
9.
目的 针对船用唇形密封使用过程中的唇口破坏问题,研究唇形密封失效影响因素及唇形密封应力、位移、接触压力分布特性。方法 模拟实船齿轮箱输入结构搭建试验台,进行密封失效因素分析,并利用有限元分析软件建立旋转唇形密封的二维轴对称模型,分析过盈量及橡胶本体材料参数对唇形密封应力、位移、唇尖接触压力分布的影响。结果 除密封材料及密封接触应力因素不确定外,其他所列因素几乎均未发生泄漏,因此进一步对不同材料及接触特性进行有限元分析。研究表明,3种材料中,2号材料的Von Mises应力值最大,且不管何种材料,随着过盈量增加,唇尖应力沿着参考线先增大后、逐渐减小、再增大,并呈现非对称分布,过盈量超过0.4 mm时,唇形密封的最大应力出现在骨架与橡胶本体接触圆角处。随着过盈量的增加,3种材料唇尖最大接触压力的变化趋势不同,最大Von Mises 接触应力逐渐增大,且过盈量在0.6 mm之后增速较快,唇尖接触线位置接触压力先减小、后逐渐增大,拐点在接触线位置0.25~0.3 mm处。结论 油温、油压、安装方式、偏心量、转速对于唇形密封失效的影响较小。材料属性与过盈量都会引起唇形密封Von Mises应力及唇尖接触压力发生较大变化,只是影响应力峰值大小不同,材料属性对于唇形密封本体位移的影响较小,过盈量会引起位移较大变化,且会引起最大应力位置变化,同时接触线接触应力与接触压力大小没有相关性。对于唇形密封安装来说,在过盈量为0.8 mm左右时较为合理。 相似文献
10.
11.
目的利用频域子结构方法(FBSM,FRF Based Sub-structuring Method)对结构的力学环境进行准确高效地预示。方法分别对处理子结构间为刚性连接和弹性连接两种问题的FBSM进行理论推导。为了验证FBSM的正确性,设计连接为刚性连接和弹性连接两种算例结构,并将FBSM对算例结构频响函数的计算结果与有限元方法(FEM,Finite Element Method)的对应计算结果进行对比。其中,弹性连接利用空间梁单元进行等效,并将该等效方法与利用六自由度标量弹簧的等效方法进行对比。结果对于刚性连接和弹性连接两种情况,FBSM对频响函数的计算结果均与FEM的对应计算结果吻合程度良好。此外,空间梁单元的结点刚度矩阵为非对角阵,与六自由度标量弹簧相比,可更为准确地等效工程实际中的弹性连接。结论FBSM可对结构的力学环境进行准确高效的预示,且在处理具有弹性连接结构的力学环境预示问题时,可采用空间梁单元等效弹性连接。 相似文献
12.
13.
《Journal of Manufacturing Processes》2014,16(2):248-256
Magnetic abrasive finishing (MAF) is a process in which the work surface is finished by removing the material in the form of micro chips by magnetic abrasive particles (MAPs) in the presence of magnetic field in the finishing zone. During the MAF process, the frictional heat is generated at the workpiece surface due to the rubbing action of magnetic abrasive particles with the work surface. The order of temperature rise is important to study, as finishing mechanism and surface integrity of work materials depend upon it. The measurement of temperature distribution during MAF operation at the interface of work piece and flexible magnetic abrasive brush (FMAB) interface is difficult. In the present analysis, finite element based ANSYS software has been used to model and simulate magnetic field distribution, magnetic pressure and temperature distribution at work-brush interface during the process. In this work the maximum magnetic flux density has been simulated of the order of 0.223 T at 0.91 A of current in electromagnet coil. Magnetic pressure on MAPs due to magnetic field of electromagnetic coil has been calculated to evaluate the frictional heat flux generated at the work-brush interface. Transient thermal analysis of workpiece domain has been performed to predict the temperature rise due to frictional heat flux. The predicted temperature on work-brush interface was found in the range of 34–51 °C. The developed simulation results based on FEA have been validated with experimental findings. 相似文献
14.
目的解决缓冲气囊的研制周期长、成本高而设计效果却不够理想的问题。方法针对这个问题,对缓冲气囊的着陆缓冲过程进行解析建模,然后通过参数的无量纲化,将缓冲气囊的解析计算模型转化成无量纲动力学模型。借助缓冲气囊参数匹配图,根据试验需求对气囊缓冲系统进行匹配设计,然后采用有限元方法对气囊缓冲系统进行建模分析。结果搭建了气囊跌落缓冲试验系统,进行了气囊跌落缓冲试验,通过试验验证了参数匹配方法的有效性,并利用试验数据对有限元仿真计算结果进行了验证,配重平台最大加速度和气囊最大压强的误差分别为1.6%和3.1%。结论有限元仿真的精度可以满足分析要求,基本反映了实际的气囊缓冲特性。 相似文献
15.
16.
Finite element analysis (FEA) has become an invaluable tool in the design of sheet metal stamping dies and processes. FEA has gained widespread acceptance as the best method of optimizing dies for conventional stamping processes. More recently, FEA has been shown to be an effective method of designing tooling for sheet forming processes. In this work, an FEA based approach is applied to the warm stamping (warm forming) process. This work introduces a new thermal finite element analysis software called PASSAGE®/Forming (PASSAGE) that enables the up-front design of the thermal management of warm forming dies. This thermal finite element analysis software is designed to specifically handle the forming and optimization scenarios related to the heating of a stamping die while minimizing user interface time. In this work, PASSAGE has been applied to a simple block of steel embedded with cartridge heaters to validate the prediction capability of this software under two different heating conditions. The results show that PASSAGE is capable of predicting the actual steady-state temperature distribution within the block with an acceptable level of accuracy while yielding notable information to the user with respect to specifying power requirements. A finite element software package like PASSAGE is a valuable tool that will aid greatly in the implementation of warm forming as a manufacturing process beyond the scope of the laboratory and into production. 相似文献