Several ANSYS, Inc. publications, particularly the Mechanical APDL Verification Manual, describe additional spectrum analyses.

The Mechanical APDL Verification Manual consists of test case analyses demonstrating the analysis capabilities of the program. While these test cases demonstrate solutions to realistic analysis problems, the Mechanical APDL Verification Manual does not present them as step-by-step examples with lengthy data input instructions and printouts (unnecessary if you have at least some finite element experience). Be sure to review each test case's finite element model and input data with accompanying comments.

The Mechanical APDL Verification Manual includes a variety of spectrum analysis test cases:

See the Command Reference for a discussion of the ANTYPE, MODOPT, D, EXPASS, MXPAND, SPOPT, SVTYP, SED, FREQ, SV, SRSS, CQC, DSUM, GRP, NRLSUM, ROSE, MMASS, RIGRESP and DMPRAT commands.