cbmd#
- CrossSections.cbmd(row='', c_r__r='', c_r__rplus1='', c_r__rplus2='', c_r__rplus3='', c_r__rplus4='', c_r__rplus5='', **kwargs)#
Specifies preintegrated section mass matrix for composite-beam sections.
Mechanical APDL Command: CBMD
- Parameters:
- row
str Row number of the matrix.
- c_r__r
str Upper triangle of the cross-section mass matrix [C].
- c_r__rplus1
str Upper triangle of the cross-section mass matrix [C].
- c_r__rplus2
str Upper triangle of the cross-section mass matrix [C].
- c_r__rplus3
str Upper triangle of the cross-section mass matrix [C].
- c_r__rplus4
str Upper triangle of the cross-section mass matrix [C].
- c_r__rplus5
str Upper triangle of the cross-section mass matrix [C].
- row
Notes
With a unit beam length, the section mass matrix relates the resultant forces and torques to accelerations and angular accelerations as follows (applicable to the local element coordinate system):
\[equation not available\]The cbmd command, one of several composite beam section commands, specifies the section mass matrix (submatrix [ C ] 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 cbmx.
For complete information, see Using Preintegrated Composite Beam Sections