3. Operands

3.1. Operand BASE

♦ BASE = low

Mode_meca or mode_gene concept for substructuring that contains the vectors defining the projection subspace.

3.2. Operand NUME_DDL_GENE

♦ NUME_DDL_GENE = nu_gene

Numbering associated with the generalized model.

3.3. Operands VECT_ASSE/VECT_ASSE_GENE

♦/VECT_ASSE = go

Concept of the type cham_no_ DEPL_R, assembled vector that we want to project.

/VECT_ASSE_GENE = go

Concept of the vect_asse_gene type, an assembled vector resulting from substructuring, that we want to project.

3.4. Operand TYPE_VECT

♦ TYPE_VECT = /' FORC ',

/” DEPL “, /” VITE “, /” ACCE “,

Character string describing the type of field represented by the assembled vector. Available values are “FORC”, “DEPL”, “”, “VITE”, and “ACCE”. The treatment is different depending on whether you use option FORC or the others.

• With option FORC, we perform the simple \({\Phi }^{T}f\) projection, where \(\Phi\) is the mode base and \(f\) is the effort.

• With the other options, the modal participation coefficients associated with a given displacement are calculated by inverse problem. Assume that we can write displacement \(x\) in the form \(x\mathrm{=}{\eta }^{T}\Phi\). We then calculate \(\eta \mathrm{=}{\Phi }^{T}{({\Phi }^{T}\Phi )}^{\mathrm{-}1}x\) (use of the Moore-Penrose pseudo-inverse).