!ELEMENT_ACTIVATION¶

Ufafanuzi wa kuwezesha/kulemaza elementi

Vigezo¶

MODE      = hali ya udhibiti (FIXED, AMPLITUDE, DAMAGE) [lazima]
STATE     = hali ya elementi (ON: imewezeshwa, OFF: imelemazwa) (lazima wakati MODE=FIXED)
AMP       = jina la amplitude (lazima wakati MODE=AMPLITUDE)
MEASURE   = kiasi cha uamuzi (STRESS, STRAIN) (lazima wakati MODE=DAMAGE)
EPSILON   = coefficient ya dummy stiffness (chaguo-msingi: 1.0E-6)
GRPID     = ID ya kikundi cha udhibiti

** Mstari wa 2 na kuendelea **

Ikiwa MODE = FIXED, AMPLITUDE¶

ELEM_GRP_NAME

Ikiwa MODE = DAMAGE¶

ELEM_GRP_NAME, LOWER, UPPER

Mfano wa matumizi¶

!ELEMENT_ACTIVATION, MODE=FIXED, STATE=OFF, EPSILON=1.0E-3, GRPID=1
PART_1
!ELEMENT_ACTIVATION, MODE=AMPLITUDE, AMP=AMP1, EPSILON=1.0E-3, GRPID=2
PART_2
!ELEMENT_ACTIVATION, MODE=DAMAGE, MEASURE=STRESS, EPSILON=1.0E-6, GRPID=3
PART_3, 100.0, 200.0
!STEP, SUBSTEPS=10
BOUNDARY,1
LOAD,1
!STEP, SUBSTEPS=10
BOUNDARY,1
LOAD,1
ELEMACT,1
!STEP, SUBSTEPS=10
BOUNDARY,1
LOAD,1
ELEMACT,1
ELEMACT,2

Maelezo¶

• Tabia hubainishwa kwa njia ya kipekee kwa MODE (MODE=FIXED|AMPLITUDE|DAMAGE).
• Kwa MODE=FIXED, STATE=ON/OFF hubainisha elementi iwe imewezeshwa/imelemazwa kila wakati.
• Kwa MODE=AMPLITUDE, elementi hubadilishwa kati ya kuwezeshwa/kulemazwa kulingana na thamani ya amplitude (imewezeshwa ikiwa amp_val > 0.5, vinginevyo imelemazwa).
• Kwa MODE=DAMAGE, elementi hulemazwa ikiwa kiasi kilichobainishwa kwa MEASURE=STRESS|STRAIN kiko nje ya masafa (hakitoshelezi LOWER ≤ thamani ≤ UPPER). Baada ya kulemazwa haiwezeshwi tena.
• Kikundi cha udhibiti kilichobainishwa kwa GRPID huwezeshwa kwa ELEMACT, id ndani ya !STEP.
• Ikiwa ELEMACT, id haijabainishwa ndani ya !STEP, mpangilio husika wa uamilishaji wa elementi hautumiki.