Reliability Evaluation of Dynamic Systems Excited in Time Domain

REDSET is a multi-disciplinary approach to structural reliability analysis for dynamic loadings, offering a practical alternative to random vibration theory and simulation. It considers various dynamic loadings, including seismic, wind-induced wave, and thermomechanical loading, and is validated for onshore and offshore structures. REDSET uses finite element representations to capture nonlinearity and provides uncertainty quantification procedures with multiple time histories. It enables the implementation of the Performance Based Seismic Design (PBSD) concept and is written by award-winning thought leaders from academia and professional practice.

Format: Hardback
Length: 304 pages
Publication date: 03 April 2023
Publisher: John Wiley & Sons Inc

A comprehensive and innovative approach to structural reliability analysis for dynamic loadings, offering a practical alternative to the traditional random vibration theory and simulation. This multidisciplinary concept provides a holistic framework for assessing the reliability of dynamic systems subjected to various time-dependent loads, including seismic, wind-induced wave, and thermomechanical loading in the form of heating and cooling of solder balls used in computer chips.

The primary challenge faced in the past was the inherent imprecision of limit state functions (LSFs), which are essential for determining the reliability of dynamic systems. Traditional reliability evaluation methods struggled to address this issue, as they were primarily designed for static loads and did not account for the dynamic nature of the loading scenarios.

To overcome this hurdle, REDSET is developed. It represents a breakthrough in the field of structural reliability analysis by incorporating time-domain representations and uncertainty quantification procedures. These methodologies enable the accurate assessment of the underlying risk associated with dynamic loadings, even when the required LSFs are implicit in nature.

To validate REDSET, a diverse range of dynamic loadings is considered, encompassing seismic, wind-induced wave, and thermomechanical loading. These loadings are representative of real-world scenarios and are applied to both onshore and offshore structures to ensure the broad applicability of the concept.

Time domain representations are proposed and demonstrated for each dynamic loading, taking into account the nonlinearity and time-varying characteristics of the systems. Multiple time histories are utilized to account for the variability and randomness of the loading conditions, providing a more robust and reliable analysis.

Furthermore, to enhance the versatility and applicability of REDSET, structures are represented by finite elements. Finite elements allow for a more accurate representation of complex structural behavior, capturing various types of nonlinearity more effectively. By employing a computer program capable of conducting nonlinear time domain dynamic analysis, the underlying risk can be estimated through the execution of numerous deterministic finite element analyses.

The potential of REDSET is further highlighted by its application in implementing the Performance Based Seismic Design (PBSD) concept, currently under development in the United States. PBSD aims to improve the seismic performance of structures by considering the dynamic behavior and uncertainties associated with the loading conditions. REDSET provides a valuable tool for incorporating dynamic effects into the design process, enabling architects and engineers to optimize the seismic performance of buildings and other structures.

In conclusion, REDSET represents a significant advancement in structural reliability analysis for dynamic loadings. By adopting a multidisciplinary approach and incorporating time-domain representations and uncertainty quantification procedures, it provides a practical alternative to traditional methods. The validation of REDSET across a diverse range of dynamic loadings demonstrates its broad applicability and potential for improving the safety and reliability of structures subjected to time-dependent loads. As the field of structural engineering continues to evolve, REDSET is poised to play a pivotal role in shaping the future of structural design and analysis.

Weight: 534g
Dimension: 135 x 197 x 20 (mm)
ISBN-13: 9781119901648