E-Book, Englisch, 668 Seiten
Liang / Lee Random Vibration
1. Auflage 2015
ISBN: 978-1-4987-0237-9
Verlag: CRC Press
Format: PDF
Kopierschutz: Adobe DRM (»Systemvoraussetzungen)
Mechanical, Structural, and Earthquake Engineering Applications
E-Book, Englisch, 668 Seiten
Reihe: Advances in Earthquake Engineering
ISBN: 978-1-4987-0237-9
Verlag: CRC Press
Format: PDF
Kopierschutz: Adobe DRM (»Systemvoraussetzungen)
Focuses on the Basic Methodologies Needed to Handle Random Processes
After determining that most textbooks on random vibrations are mathematically intensive and often too difficult for students to fully digest in a single course, the authors of Random Vibration: Mechanical, Structural, and Earthquake Engineering Applications decided to revise the current standard. This text incorporates more than 20 years of research on formulating bridge design limit states. Utilizing the authors’ experience in formulating real-world failure probability-based engineering design criteria, and their discovery of relevant examples using the basic ideas and principles of random processes, the text effectively helps students readily grasp the essential concepts. It eliminates the rigorous math-intensive logic training applied in the past, greatly reduces the random process aspect, and works to change a knowledge-based course approach into a methodology-based course approach. This approach underlies the book throughout, and students are taught the fundamental methodologies of accounting for random data and random processes as well as how to apply them in engineering practice.
Gain a Deeper Understanding of the Randomness in Sequences
Presented in four sections, the material discusses the scope of random processes, provides an overview of random processes, highlights random vibrations, and details the application of the methodology. Relevant engineering examples, included throughout the text, equip readers with the ability to make measurements and observations, understand basic steps, validate the accuracy of dynamic analyses, and master and apply newly developed knowledge in random vibrations and corresponding system reliabilities.
Comprising 11 Chapters, this text:
- Reviews the theory of probability and applies it from an engineering perspective
- Introduces basic concepts and formulas to prepare for discussions of random processes
- Emphasizes the essence of probability as the chance of occurrence in sample space
- Covers two important issues in engineering practice, the uncertainty of data and the probability of failure
- Explores the random processes in the time domain
- Explains the nature of time-varying variables by joint PDF through the Kolmogorov extension
- Examines random processes in the frequency domain
- Discusses several basic and useful models of random processes
- Presents a new set of statistics for random processes
- Employs an approach to present important processes within the context of practical engineering problems
- Includes the generality of dealing with randomness and the difference between random variables and processes
- Focuses on the topic of vibration problems
- Addresses the basic parameters of linear single-degree-of-freedom (SDOF) systems
- Stresses a new method of random process referred to as time series
- Details linear multi-degree-of-freedom (MDOF) systems
- Describes the statistical analyses of direct approach based on model decoupling of proportionally and nonproportionally-damped systems
- Provides materials on the applications of random processes and vibration
- Discusses statistical studies on random data and model identifications
- Describes the nonlinear phenomena and the general approach of linearization
- Highlights a special method of Monte Carlo simulation, and more
Random Vibration: Mechanical, Structural, and Earthquake Engineering Applications effectively integrates the basic ideas, concepts, principles, and theories of random processes. This enables students to understand the basic methodology and establish their own logic to systematically handle the issues facing the theory and application of random vibrations.
Autoren/Hrsg.
Fachgebiete
Weitere Infos & Material
Section I Basic Probability Theory
Introduction
Background of Random Vibration
Fundamental Concept of Probability Theory
Random Variables
Functions of Random Variables
Systems and Functions
Sums of Random Variables
Other Functions of Random Variables
Design Considerations
Central Limit Theorems and Applications
Section II Random Process
Random Processes in the Time Domain
Definitions and Basic Concepts
Stationary Process
Correlation Analysis
Random Processes in the Frequency Domain
Spectral Density Function
Spectral Analysis
Practical Issues of PSD Functions
Spectral Presentation of Random Process
Statistical Properties of Random Process
Level Crossings
Extrema
Accumulative Damages
Section III Vibrations
Single-Degree-of-Freedom Vibration Systems
Concept of Vibration
Periodically Forced Vibration
Response of SDOF System to Arbitrary Forces
Response of SDOF Linear Systems to Random Excitations
Stationary Excitations
White Noise Process
Engineering Examples
Coherence Analyses
Time Series Analysis
Random Vibration of MDOF Linear Systems
Modeling
Direct Model for Determining Responses
Normal Mode Method
Nonproportionally Damped Systems, Complex Modes
Modal Combination
Section IV Applications and Further Discussions
Inverse Problems
Introduction to Inverse Problems
System Parameter Identification
Vibration Testing
Failures of Systems
3s Criterion
First Passage Failure
Fatigue
Considerations on Reliability Design
Nonlinear Vibrations and Statistical Linearization
Nonlinear Systems
Nonlinear Random Vibrations
Monte Carlo Simulations
References
Index
