基于LS-DYNA的過盈裝配的小案例

2017-12-07 by:CAE仿真在線來源:互聯(lián)網(wǎng)

以軸承和軸的熱裝配為例,過盈量為2mm,進行裝配

基本思路: 采用*CONTACT_SURFACE_TO_SURFACE_INTERFERENCE_ID進行動態(tài)松弛預應力裝配

動態(tài)松弛計算結果

動態(tài)松弛過程.gif

關鍵計算關鍵字卡片已經(jīng)列下下面,有一定dyna基礎的就應該自行實現(xiàn)!

*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
$