共查询到20条相似文献,搜索用时 75 毫秒
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本文以高负荷导向垂直栅板(简称HVGT)塔板流体力学研究为基础,对该塔板的传质性能进行了研究,探讨了塔板气相氨吸收效率与板孔气速和液流强度的关系,推导出了HVGT气相Murphree板效率数学模型。理论模型的计算值与实测值吻合良好。 相似文献
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介绍了氟化氢吸收原理、流程 ,国内外氟化氢吸收设备的选型 ,满足工艺要求的穿流栅板塔的设计计算及应用。 相似文献
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采用Moldflow软件对遥控器前盖的注射成型过程进行模拟分析,以确定型腔的受力值,并将其作为刚度、强度分析的输入载荷,运用Ansys workbench软件分析该型腔的应力应变。结果表明,综合运用有限元分析软件Ansys workbench和Moldflow,能够较为全面地反映注塑模型腔在注射成型过程中的受力和变形情况,从而为模具设计提供更为有价值的参考依据。 相似文献
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将分析设计直接法引入5000t/d生产线的增湿塔设计中,运用有限元分析方法对增湿塔结构进行校核和评定。结合实例,详细阐述了应用有限元软件ANSYS分析增湿塔在不同工况的应力和变形的方法,并对设备最大应力点及其它危险部位进行应力评定。有限元分析法可对同类结构进行分析校核和优化设计。 相似文献
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首先给出了理论分析的计算分式,然后做了电动轮胎定型硫化的侧板的力学模型并做了简化。使用ANSYS软件对其做了网络划分且加了约束和加截。最后对侧板进行了应力分析,找出了最大变形位置计算出最大应力值。该应力值远小于侧板的许用力,因此侧板强度满足设计要求。 相似文献
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The general equations describing the flow of Newtonian and non-Newtonian fluids in the gap of two calender rolls were simplified by making use of the lubrication approximation. The resulting equations were solved by the finite element method. The results are in excellent agreement with existing analytical solutions for Newtonian fluids. New results were obtained for pressure, velocity profiles and sheet thickness of non-Newtonian fluids for symmetric and asymmetric calendering (different roll diameters, different roll speeds). The solution of this problem demonstrated the great possibilities offered by the finite element method in solving Theological problems of practical significance, particularly whenever complicated wall boundaries or free surfaces are involved. 相似文献
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E. Mitsoulis 《Polymer Engineering and Science》1986,26(2):171-186
A general-purpose finite element program has been used to simulate the flow of polymers through wire-coating dies. The analysis includes Newtonian and power-law fluids. The effect of normal stresses was examined through a simple viscoelastic constitutive equation, Nonisothermal wire coating was studied to obtain the temperature field within the melt. The effect of a slip condition at the solid boundaries was also examined. The determination of the coating melt free surface was carried out through an iterative procedure. The finite element solution provides details about the existence and extent of recirculation regions, about hot spots due to viscous dissipation, and also captures the stress singularities present at the impact of the melt with the wire and at the exit from the die. Pressure distribution, maximum temperature rise, haul-off wire tension, maximum wire tension, and stresses at the wire surface and die wall are also presented. 相似文献
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通过非线性有限元方法对橡胶-钢球支座在轴向拉伸、扭转和弯曲的大变形载荷作用下的力学行为进行分析,得出支座的轴向刚度、扭转刚度和弯曲刚度与变形的关系。轴向刚度和弯曲刚度随着变形的增大而减小,扭转刚度随着变形的增大而增大,但总的来说,变化很小。 相似文献
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