/INIBRI/STRESS

Block Format Keyword Describes the initial state (full stress for the brick, not for each integration points and in local reference system) for a brick.

Format

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
/INIBRI/STRESS/unit_ID
bric_IDst σ x σ y σ z
σ x y σ y z σ x z

Definition

Field Contents SI Unit Example
unit_ID Unit Identifier

(Integer, maximum 10 digits)
bric_IDst Stress element identifier

(Integer)
σ x Stress

(Real)
σ y Stress

(Real)
σ z Stress

(Real)
σ x y Shear stress

(Real)
σ y z Shear stress

(Real)
σ x z Shear stress

(Real)

Comments

  1. The initial state for brick may be defined by more than one block.
  2. Using /INIBRI/STRSESS you are assuming there is no density of the deformed elements. Before the first cycle Radioss will check consistency of the input stress tensor with material data (stiffness and density).
    D=s11+s22+s333−Bulk⋅(1−ρρ0)=0
    Where,
    ρ0
    Density defined in the Starter file
    ρ
    Density in the state file

    If the stress is not fulfilled, then Radioss will correct the diagonal entry of the stress tensor:

    snewii=sinitialii−D