Utilizing Computational Probabilistic Methods to Derive Shock Specifications in a Nondeterministic Environment
- Sandia National Laboratories
One of the key elements of the Stochastic Finite Element Method, namely the polynomial chaos expansion, has been utilized in a nonlinear shock and vibration application. As a result, the computed response was expressed as a random process, which is an approximation to the true solution process, and can be thought of as a generalization to solutions given as statistics only. This approximation to the response process was then used to derive an analytically-based design specification for component shock response that guarantees a balanced level of marginal reliability. Hence, this analytically-based reference SRS might lead to an improvement over the somewhat ad hoc test-based reference in the sense that it will not exhibit regions of conservativeness. nor lead to overtesting of the design.
- Research Organization:
- Sandia National Labs., Albuquerque, NM, and Livermore, CA (US)
- Sponsoring Organization:
- US Department of Energy (US)
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 766576
- Report Number(s):
- SAND2000-2631C
- Country of Publication:
- United States
- Language:
- English
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