Notes

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

The SSPD command, one of several preintegrated shell section commands , specifies the bending stiffness quantity (submatrix [ D ] data) for a preintegrated shell section. The section data defined is associated with the section most recently defined (via the SECTYPE command).

Unspecified commands default to zero.

Related commands are SSPA, SSPB, SSPE, SSMT, SSBT, and SSPM.

If you are using the SHELL181 or SHELL281 element's Membrane option (KEYOPT(1) = 1), it is not necessary to issue this command.

For complete information, see Using Preintegrated General Shell Sections.

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