ACCEL1

Bulk Data Entry Defines static acceleration loads at specific GRID points in the model.

Format

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
ACCEL1 SID CID A N1 N2 N3      
  GID1 GID2 etc.            

Example

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
ACCEL1 100 0 2.0 2.0 1.0 3.0      
  2 4 6 8 THRU 30 BY 2  
  1200 THRU 1300            

Definitions

Field Contents SI Unit Example
SID Acceleration load set identification number.

(Integer > 0)

  
CID Coordinate system identification number.
= 0 (Default)
References the basic coordinate system.

(Integer ≥ 0, or blank)

  
A Scale factor for the acceleration load vector.

(Real)

  
N1,N2,N3 Acceleration load vector components in the coordinate system CID.

(Real, a minimum of one Ni should not be set to 0.0)

  
GIDi Grid point identification numbers at which the acceleration load is applied. The THRU and BY keywords can also be used to specify grids.

(Integer > 0)

  

Comments

  1. The acceleration load applied to referenced grid points in the model is given by:(1)
    a = VAL * N
    Where,
    a
    Acceleration load.
    N
    Vector with components N1, N2, and N3.
    V A L MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbwvMCKf MBHbqefqvATv2CG4uz3bIuV1wyUbqedmvETj2BSbqefm0B1jxALjhi ov2DaebbnrfifHhDYfgasaacH8srps0lbbf9q8WrFfeuY=Hhbbf9v8 qqaqFr0xc9pk0xbba9q8WqFfea0=yr0RYxir=Jbba9q8aq0=yq=He9 q8qqQ8frFve9Fve9Ff0dmeaacaGacmGadaWaaiqacaabaiaafaaake aacaWGwbGaamyqaiaadYeaaaa@3B49@
    Scale factor defined by field A.
  2. The acceleration loads specified in the ACCEL1 entry can be combined with other loads, such as FORCE, MOMENT, GRAV, ACCEL, and ACCEL2, through the LOAD Subcase Information Entry. The SID on the ACCEL entry should be unique with regard to any other load entry.
  3. The acceleration load does not include effects, due to mass on SPOINTs.
  4. This card is represented as a force load in HyperMesh.