NDLI: A comparative study of probabilistic structural safety analysis

Content Provider	IEEE Xplore Digital Library
Author	Bhattacharjee, P. Ramesh Kumar, K. Janardhan Reddy, T.A.
Copyright Year	2010
Description	Author affiliation: Production Planning Division, DRDL, Hyderabad, India (Ramesh Kumar, K.) \|\| Mechanical Engineering, Osmania University, India (Janardhan Reddy, T.A.) \|\| Reliability Engineering Division, DRDL, Hyderabad, India (Bhattacharjee, P.)
Abstract	Structural Safety is one of the most important factors of any aerospace product. Until recently, a design is considered to be robust if all the variables that affect its life has been accounted for and brought under control Safety factor cannot, by themselves, guarantee satisfactory performance and they do not provide sufficient information to achieve optimal use of available resources. The meaning of robustness is shifting. Designer and engineers have traditionally handled variability with safety factors. Some safety factors are derived from observation and analysis, and many cases it use to be pure guess work. In those cases, the bigger the guess, the bigger the risk, the bigger the safety factor resulting over designed product. In the present paper, a spherical pressure vessel is identified for structural safety evaluation. Structural Safety Index is evaluated using uncertainty. Various statistical methods like mean value and moment methods are discussed. Simulation techniques for evaluation of probability of failure are also discussed. It is well established that simulation techniques have proven their value especially for problem where the representation of the state function is associated with difficulties. Such cases are e.g when the Limit State function is not differentiable or when several design points contribute to the failure probability. The various simulation methodologies have been discussed in brief for structural safety evaluation, such as Crude Monte Carlo, Importance Sampling, Importance Sampling based on β point and Latin Hyper Cube Sampling. Finally a comparative study of safety evaluation based on these techniques are made in this paper. These methods found to be useful for structural safety and design evaluation.
Starting Page	256
Ending Page	262
File Size	969736
Page Count	7
File Format	PDF
ISBN	9781424483440
e-ISBN	9781424483433
DOI	10.1109/ICRESH.2010.5779557
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-12-14
Publisher Place	India
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Uncertainty Importance sampling & Latin Hypercube Sampling Monte Carlo Methods Indexes Safety Index Simulation Probability of Failure Advanced First Order Second Moment Method (AFOSM) Safety Moment methods Reliability Structural Reliability Manganese
Content Type	Text
Resource Type	Article

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