Mapdl.cbmx(row='', s_r__r_='', s_r__r_plus_1_='', s_r__r_plus_2_='', s_r__r_plus_3_='', s_r__r_plus_4_='', s_r__r_plus_5_='', s_r__r_plus_6_='', **kwargs)

Specifies preintegrated cross-section stiffness for composite beam

APDL Command: CBMX sections.


Row number of the matrix.

s(r)(r), … , s(r)(r+6)

Upper triangle of the cross-section stiffness matrix [S].


The behavior of beam elements is governed by the generalized- stress/generalized-strain relationship of the form:

The CBMX command, one of several composite beam section commands, specifies the cross-section stiffness matrix (submatrix [S] data) for a composite beam section. The section data defined is associated with the section most recently defined (SECTYPE) at the specified temperature (CBTMP).

Unspecified values default to zero.

Related commands are CBTMP, CBTE, and CBMD.

For complete information, see Using Preintegrated Composite Beam Sections.