# PARAM, CK3

Bulk Data Entry Specifies factors for the stiffness matrix produced by GENEL cards.

Parameter Values Description
CK3 <Real>

Default = 1.0

CK3 specifies factors for the stiffness matrix produced by GENEL cards. The total stiffness matrix is:
$⌊{K}_{\mathit{jj}}⌋=⌊{K}_{\mathit{jj}}^{y}⌋+\mathit{CK}3*⌊{K}_{\mathit{jj}}^{G}⌋$
Where,
$⌊{K}_{\mathit{jj}}^{G}⌋$
The stiffness generated by all GENEL cards.
$⌊{K}_{\mathit{jj}}^{y}⌋$
The combination of the stiffness generated from structural element entries in the Bulk Data section and the stiffness generated by the Subcase Information command K2GG and scaled by PARAM,CK2.