《Solidworks有限元分析教程》.ppt

有限元分析用户培训 目 录 企业需求与有限元分析 更少的样机：省钱 更短的周期：省时 更好的质量：品质 有限元分析的主要步骤 前处理 建立分析对象的有限元模型 求解 对有限元模型的计算工况进行求解 后处理 观察分析结果，评估设计是否符合要求 Cosmos/Works有限元分析的步骤 建立几何模型 定义材料属性 定义边界条件(约束和载荷) 划分网格 求解 查看和评估结果 Cosmos/Works的用户界面 Cosmos/Works的工具条 Cosmos/Works的选项对话框 Cosmos/Works线性静力分析 例1.支座分析 例2.轴承载荷 例3.壳单元，静水压 例4.Motion，远端载荷 线性静力分析：定义专题 Displacement in the radial direction: Select “Axis1” and then define displacement plot in X-direction (radial to the axis). Select deformation scale=1 Right-click on the displacement plot icon “plot2” and then select”List selected” Average displacement of “pole piece lower” = -0.0019504” (decrease in radius) Average displacement of “pole piece upper” = 0.007896 “ (increase in radius) Sum of these 2 displacement = 0.009846” ~Initial interfernce of 0.01” Hoop Stress (tangential): Select “Axis1” and then define stress plot in Y-direction (radial to the axis). Select deformation scale=1 Right-click on the stress plot icon “plot2” and then select”List selected” Negative stress on “pole piece lower” (compression) Positive stress on “pole piece upper” (tension) 线性静力分析：定义材料属性 Simulate parts which are separated by large gaps First run the model with small displacement option and look at the results If you see that there is a change in the orientation of the contact surfaces during loading or if the results doesn’t look realistic, use large deflection option 线性静力分析：网格划分 Open “RectangleGap.sldasm” Define a static study “smallcontact” Apply material “Alloy steel” to both parts Apply a pressure of 725 psi on the top face Select the two front faces and then apply restraint. Select Flat face option and then select “Normal to face” Fix the left semi-circular face Hide the loads/bc symbols Define “Surface” contact between the top face of the bottom leg and the perpendicular face Create mesh and run Define a stress plot with scale factor = 1. Look at the contact surface. 线性静力分析：定义约束 Define a new static study “LargeDisp” Drag’n drop the material and loads/bc folders from