Random Vibration Analysis: From Research into Practice

Document Type

Book Chapter

Publication Date


Subject: LCSH

Structural stability


Civil Engineering


Many structural systems encountered in aeronautical, civil and mechanical engineering are excited by loads which are best represented as random processes. The dynamic responses of structures excited by stochastic loads can be computed in two ways: (1) by using random vibration analysis (RVA); or (2) by simulating samples of the loads (or using measured load time-histories) and performing deterministic dynamic analysis for each sample. For linear structures, RVA is much more cost-effective than simulation-based analysis, and can provide more accurate statistical measures of various response quantities of interest…

Through a collaborative effort, the authors have significantly enhanced the RVA capability that was available in previous versions of ANSYS, and the first release that offers major new functionality is ANSYS 5.0. The new implementation is particularly useful in applications involving partially correlated excitations with or without propagating waves.



Publisher Citation

Harichandran, R.S., & Ali, A. Random vibration analysis: from research into practice (1995). In Colville, J., and Amde M. A. Research transformed into practice: implementation of NSF research : proceedings of the conference sponsored by the National Science Foundation, Arlington, Virginia, June 14-16, 1995. New York: ASCE Press.