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发表于 2013-8-13 12:47:25
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来自 吉林长春
本帖最后由 sweetboy9063 于 2013-8-13 12:48 编辑
提问:我的模型第一次是在hm中建立的模型,并且用其进行了接触的定义,直接导入aba中进行计算,载荷步为0.05,计算成功了。但是螺纹旋合部位的应力场分布不太合理,不连续。
**
** INTERACTION PROPERTIES
**
*Surface Interaction, name=PROPER2
1.,
*Friction, rough
*Surface Behavior, pressure-overclosure=HARD
*Surface Interaction, name=PROPERCONTACT1
1.,
*Friction, slip tolerance=0.005, exponential decay
0.25, 0.2, 1.5
*Surface Behavior, no separation, pressure-overclosure=HARD
**
** BOUNDARY CONDITIONS
**
** Name: Disp-BC-1 Type: Displacement/Rotation
*Boundary
_M11, 1, 1
_M11, 2, 2
_M11, 3, 3
**
** INTERACTIONS
**
** Interaction: PROPER2-1
*Contact Pair, interaction=PROPER2, small sliding, type=SURFACE TO SURFACE
TARGET3, MASTER3
** Interaction: PROPERCONTACT1-1
*Contact Pair, interaction=PROPERCONTACT1, type=SURFACE TO SURFACE
TARGET1, MASTER1
** Interaction: PROPERCONTACT1-2
*Contact Pair, interaction=PROPERCONTACT1, type=SURFACE TO SURFACE
TARGET2, MASTER2
** ----------------------------------------------------------------
**
** STEP: Step-1
**
*Step, name=Step-1, nlgeom=YES, inc=2000
*Static
0.05, 1., 1e-06, 0.05
**
** LOADS
**
** Name: CFORCE-1 Type: Moment
*Cload
_M12, 4, -500.
**
** OUTPUT REQUESTS
**
*Restart, write, frequency=0
**
** FIELD OUTPUT: F-Output-1
**
*Output, field, variable=PRESELECT, frequency=10
**
** HISTORY OUTPUT: H-Output-1
**
*Output, history, variable=PRESELECT
*End Step
后来试图将载荷步缩小,可是怎么也算不成功,请明白的人指点。谢谢!
如下
**
** INTERACTION PROPERTIES
**
*Surface Interaction, name=PROPER2
1.,
*Friction, slip tolerance=0.005, exponential decay
0.2, 0.15, 1.5
*Surface Behavior, no separation, pressure-overclosure=HARD
*Surface Interaction, name=PROPERCONTACT1
1.,
*Friction, slip tolerance=0.005, exponential decay
0.2, 0.15, 1.5
*Surface Behavior, pressure-overclosure=HARD
**
** CONTACT INITIALIZATION DATA
**
*Contact Initialization Data, name=CInit-1
**
** BOUNDARY CONDITIONS
**
** Name: Disp-BC-1 Type: Displacement/Rotation
*Boundary
_M11, 1, 1
_M11, 2, 2
_M11, 3, 3
**
** INTERACTIONS
**
** Interaction: PROPER2-1
*Contact Pair, interaction=PROPER2, small sliding, type=SURFACE TO SURFACE, adjust=0.0
TARGET3, MASTER3
** Interaction: PROPERCONTACT1-1
*Contact Pair, interaction=PROPERCONTACT1, type=SURFACE TO SURFACE, tracking=STATE, adjust=0.0
TARGET1, MASTER1
** Interaction: PROPERCONTACT1-2
*Contact Pair, interaction=PROPERCONTACT1, small sliding, type=SURFACE TO SURFACE, adjust=0.0
TARGET2, MASTER2
** ----------------------------------------------------------------
**
** STEP: Step-1
**
*Step, name=Step-1, nlgeom=YES, inc=8000
*Static, stabilize=0.0002, allsdtol=0.05, continue=NO
0.03, 1., 1e-10, 0.03
**
** LOADS
**
** Name: CFORCE-1 Type: Moment
*Cload
_M12, 4, -500.
**
** OUTPUT REQUESTS
**
*Restart, write, frequency=0
**
** FIELD OUTPUT: F-Output-1
**
*Output, field, variable=PRESELECT, frequency=10
**
** HISTORY OUTPUT: H-Output-1
**
*Output, history, variable=PRESELECT
*End Step
这些关于接触的定义,到底哪里出错了,请高人指点。谢谢 |
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