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发表于 2009-4-13 11:45:24
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来自 广东中山
本帖最后由 htscut2010 于 2009-4-13 11:52 编辑
8# binling_love
以下是对ALE网格自适应方法在显式模块中一些参数的CAE与INP设置,是从ABAQUS文档中整理出来的,适合于初学者,不过介绍得比较简略,如果有兴趣的话,可以先看看这篇文章“[原创]ALE方法详解与各选项卡参数意义与设置”,在看看下面的参数设置
Step module: Other- ALE Adaptive Mesh Domain- Edit: toggle on Use the ALE adaptive mesh domain below, Frequency: number of increments
*ADAPTIVE MESH, FREQUENCY=number of increments
**频率设置(每多少个增量步进行一次remesh)
Step module: Other- ALE Adaptive Mesh Domain- Edit: toggle on Use the ALE adaptive mesh domain below, Remeshing sweeps per increment: number of sweeps*ADAPTIVE MESH, MESH SWEEPS=number of sweeps
**remesh强度设置(每次remesh用多少次sweep)
Step module: Other -ALE Adaptive Mesh Domain- Edit: toggle on Use the ALE adaptive mesh domain below, Initial remeshing sweeps: Value: number of initial sweeps*ADAPTIVE MESH, INITIAL MESH SWEEPS=number of initial sweeps
**初始sweep次数(用于分析之前对网格优化)
Step module: Other -ALE Adaptive Mesh Controls- Create: Name: name
Volumetric: volume smoothing weight, Laplacian: Laplacian smoothing weight,
Equipotential: equipotential smoothing weight
*ADAPTIVE MESH CONTROLS, NAME=name
volume smoothing weight, Laplacian smoothing weight, equipotential smoothing weight
example: *ADAPTIVE MESH CONTROLS, NAME=name
0.5,0.0,0.5
**算法设置(设置三种sweep算法所占权重)
Step module: Other- ALE Adaptive Mesh Controls -Create: Name: name, toggle off Use enhanced algorithm based on evolving element geometry
*ADAPTIVE MESH CONTROLS, NAME=name, GEOMETRIC ENHANCEMENT=NO
**几何增强设置(使得sweep算法更具健壮性,更好用,更牛逼)
Step module: Other- ALE Adaptive Mesh Controls -Create: Name: name,Priority: Improve aspect ratio*ADAPTIVE MESH CONTROLS, NAME=name, SMOOTHING OBJECTIVE=UNIFORM
**网格梯度设置(改善网格宽高比,不能保证初始网格梯度)
Step module: Other- ALE Adaptive Mesh Controls- Create: Name: name, Priority: Preserve initial mesh grading *ADAPTIVE MESH CONTROLS, NAME=name, SMOOTHING OBJECTIVE=GRADED
**网格梯度设置(不保证改善网格宽高比,保留初始网格梯度)
Step module: Other- ALE Adaptive Mesh Controls -Create: Name: name, Meshing predictor: Current deformed position*ADAPTIVE MESH CONTROLS, NAME=name, MESHING PREDICTOR=CURRENT
**节点位置设置(使用当前节点来进行sweep迭代)
Step module: Other- ALE Adaptive Mesh Controls -Create: Name: name, Meshing predictor: Position from previous adaptive mesh increment*ADAPTIVE MESH CONTROLS, NAME=name, MESHING PREDICTOR=PREVIOUS**节点位置设置(使用上一次remesh形成的网格节点位置来进行sweep迭代)
Step module: Other- ALE Adaptive Mesh Controls -Create: Name: name, Curvature refinement: *ADAPTIVE MESH CONTROLS, NAME=name, CURVATURE REFINEMENT=
**高曲率边界网格密度设置
Step module: Other -ALE Adaptive Mesh Controls -Create: Name: name, toggle on Second order*ADAPTIVE MESH CONTROLS, NAME=name, ADVECTION=SECOND ORDER
**静变量转换算法设置
Step module: Other- ALE Adaptive Mesh Controls -Create: Name: name, toggle on First order*ADAPTIVE MESH CONTROLS, NAME=name, ADVECTION=FIRST ORDER
**静变量转换算法设置
Step module: Other- ALE Adaptive Mesh Controls- Create: Name: name, Momentum advection: Element center projection*ADAPTIVE MESH CONTROLS, NAME=name, MOMENTUM ADVECTION=ELEMENT CENTER PROJECTION
**动变量转换算法设置
Step module: Other- ALE Adaptive Mesh Controls -Create: Name: name, Momentum advection: Half-index shift*ADAPTIVE MESH CONTROLS, NAME=name, MOMENTUM ADVECTION=HALF INDEX SHIFT
**动变量转换算法设置
Step module: Other- ALE Adaptive Mesh Controls -Create: Name: name, Initial feature angle: *ADAPTIVE MESH CONTROLS, NAME=name, INITIAL FEATURE ANGLE=a
**初始几何特征检测角度
Step module: Other- ALE Adaptive Mesh Controls -Create: Name: name, Transition feature angle: *ADAPTIVE MESH CONTROLS, NAME=name, TRANSITION FEATURE ANGLE=b
**几何特征激活角度
Step module: Other- ALE Adaptive Mesh Controls -Create: Mesh constraint angle:
*ADAPTIVE MESH CONTROLS, MESH CONSTRAINT ANGLE=c
**分析控制角度
下面是一个简单的实例的inp文件,有一些参数都是默认值,所以inp文件中未有显示出 |
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