On the Use of Material-Dependent Damping in ANSYS for Mode Superposition Transient Analysis
The mode superposition method is often used for dynamic analysis of complex structures, such as the seismic Category I structures in nuclear power plants, in place of the less efficient full method, which uses the full system matrices for calculation of the transient responses. In such applications, specification of material-dependent damping is usually desirable because complex structures can consist of multiple types of materials that may have different energy dissipation capabilities. A recent review of the ANSYS manual for several releases found that the use of material-dependent damping is not clearly explained for performing a mode superposition transient dynamic analysis. This paper includes several mode superposition transient dynamic analyses using different ways to specify damping in ANSYS, in order to determine how material-dependent damping can be specified conveniently in a mode superposition transient dynamic analysis.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Organization:
- AMERICAN SOCIETY OF MECHANICAL ENGINEERS (ASME)
- DOE Contract Number:
- DE-AC02-98CH10886
- OSTI ID:
- 1020943
- Report Number(s):
- BNL-95051-2011-CP; TRN: US1103910
- Resource Relation:
- Conference: ASME 2011 Pressure Vessels & Piping Division PVP2011 ; Baltimore, MD; 20110717 through 20110721
- Country of Publication:
- United States
- Language:
- English
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