*CONSTRAINED_GENERALIZED_WELD_SPOT

LS-DYNA Input Interface KeywordDefine a connection between 2 nodes with a possible force-based failure model.

Format

(1) (2) (3) (4) (5) (6) (7) (8)
*CONSTRAINED_GENERALIZED_WELD_SPOT_{OPTION}
If OPTION = ID, insert the following line.
(1) (2) (3) (4) (5) (6) (7) (8)
ID
(1) (2) (3) (4) (5) (6) (7) (8)
NSID
(1) (2) (3) (4) (5) (6) (7) (8)
SN SS N M

Definition

Field Contents SI Unit Example
ID Weld identifier.

(Integer)
NSID Nodal set identifier.

(Integer)
SN Normal tensile force at failure.

(Real)

 [ N ]
SS Normal shear force at failure.

(Real)

 [ N ]
N Exponent for the normal force.

(Real)
M Exponent for the shear force.

(Real)

Comments

  1. This keyword maps to rigid body element (/RBODY) with optional failure.
  2. Normal and shear directions for each node of spotweld are defined according to direction from node to geometrical COG of the nodes.
  3. The failure is defined with the following expression:
    ( | Normal_force | SN ) N + ( | Shear_force | SS ) M ≥1 MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaWaaeWaaeaada WcaaqaamaaemaabaGaamOtaiaad+gacaWGYbGaamyBaiaadggacaWG SbGaai4xaiaadAgacaWGVbGaamOCaiaadogacaWGLbaacaGLhWUaay jcSdaabaGaam4uaiaad6eaaaaacaGLOaGaayzkaaWaaWbaaSqabeaa caWGobaaaOGaey4kaSYaaeWaaeaadaWcaaqaamaaemaabaGaam4uai aadIgacaWGLbGaamyyaiaadkhacaGGFbGaamOzaiaad+gacaWGYbGa am4yaiaadwgaaiaawEa7caGLiWoaaeaacaWGtbGaam4uaaaaaiaawI cacaGLPaaadaahaaWcbeqaaiaad2eaaaGccqGHLjYScaaIXaaaaa@5D66@