A decision support system for the optimal design of base-motion isolators
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Authors
Hernandez, Manuel A.
Subjects
Structural dynamics
structural isolation
nonlinear transient analysis
structural synthesis
decision support system
recursive block-by-block
convolution
Wen
hysteresis
earthquake
structural isolation
nonlinear transient analysis
structural synthesis
decision support system
recursive block-by-block
convolution
Wen
hysteresis
earthquake
Advisors
Gordis, Joshua
Boger, Dan C.
Date of Issue
2003-09
Date
Publisher
Monterey, California. Naval Postgraduate School
Language
Abstract
Transient analysis of large structural systems is a computationally demanding process, which in the past has prevented dynamic redesign and optimization. Large structures, such as buildings or ships, subjected to random base motions use isolators to minimize strain energies, which may cause damage or structural failure. This research focuses on the optimization of isolator parameters in order for structural systems to withstand potentially catastrophic transient vibrations. Many non-linear hysteretic, viscoelastic, and sliding friction isolators were numerically modeled using the scientific programming language, MATLAB. The existing programs used to solve the Voltera integral formulation for Transient Structural Synthesis (TSS) and the Recursive Block-by-Block (RBB) algorithm were investigated and enhanced to yield greater accuracy and increased computational speed. The final product is a user-friendly Decision Support System (DSS) for use with both civil and military applications. Based on different types of base motions and the inherent dynamics of the structure, this DSS is capable of optimizing isolator parameters to meet a user specific objective.
Type
Thesis
Description
Series/Report No
Department
Physical Oceanography
Information Sciences (IS)
Organization
Identifiers
NPS Report Number
Sponsors
Funder
Format
xvi, 87 p. : ill. (some col.) ;
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.