基于LS-DYNA的过盈装配的小案例

2017-12-07 by:CAE仿真在线来源:互联网

以轴承和轴的热装配为例,过盈量为2mm,进行装配

基本思路: 采用*CONTACT_SURFACE_TO_SURFACE_INTERFERENCE_ID进行动态松弛预应力装配

动态松弛计算结果

动态松弛过程.gif

关键计算关键字卡片已经列下下面,有一定dyna基础的就应该自行实现!

*DEFINE_CURVE_TITLE
stiffness over time dynamic relaxation
$: Contact surface 1 : Factor on dyn rel stiffness vs time
$: X axis : Dynamic rel time (Units: Time)
$: Y axis : Factor on stiffness (Units: Scalar, no units)
$: Usage: Stress initialization
$: label sidr sfa sfo offa offo dattyp
4 1 0.0 0.0 0.0 0.0 0
$: xvals yvals
0.0 0.0
0.0003 1.0000000
0.01 1.0000000
$
*DEFINE_CURVE_TITLE
stiffness over time dynamic relaxation
$: label sidr sfa sfo offa offo dattyp
5 0 0.0 0.0 0.0 0.0 0
$: xvals yvals
0.0 1.0000000
0.010 1.0000000
$
*CONTACT_SURFACE_TO_SURFACE_INTERFERENCE_ID
$: label title
1contact interference
$: ssid msid sstyp mstyp sboxid mboxid spr mpr
1 2 3 3 0 0 1 1
$: fs fd dc vc vdc penchk bt dt
0.2 0.0 0.0 0.0 20.0 0 0.0 0.0
$: sfs sfm sst mst sfst sfmt fsf vsf
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
$: lcid1 lcid2
4 5
$