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Stochastic dynamic response of wood structural systems.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Stochastic dynamic response of wood structural systems./
Author:	Foliente, Greg Camaligan.
Description:	1 online resource (244 pages)
Notes:	Source: Dissertations Abstracts International, Volume: 56-01, Section: B.
Contained By:	Dissertations Abstracts International56-01B.
Subject:	Civil engineering. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9419211click for full text (PQDT)
ISBN:	9798641362304

Stochastic dynamic response of wood structural systems.
Foliente, Greg Camaligan.

Stochastic dynamic response of wood structural systems. - 1 online resource (244 pages)

Source: Dissertations Abstracts International, Volume: 56-01, Section: B.

Thesis (Ph.D.)--Virginia Polytechnic Institute and State University, 1993.

Includes bibliographical references

This dissertation presents a general hysteresis model for wood joints and structural systems, based on a modification of the Bouc-Wen-Baber-Noori (BWBN) model. The hysteretic constitutive law, based on the endochronic theory of plasticity and characterized by a single mathematical form, produces a versatile, smoothly varying hysteresis that models previously observed behavior of wood joints and structural systems, namely, (1) nonlinear, inelastic behavior, (2) stiffness degradation, (3) strength degradation, (4) pinching, and (5) memory. The constitutive law takes into account the experimentally observed dependence of wood joints' response to their past history (i.e., the input and response at earlier times, or memory). Practical guidelines to estimate the hysteresis parameters of any wood joint or structural system are given. Hysteresis shapes produced by the proposed model are shown to compare favorably with experimental hysteresis of wood joints with: (1) yielding plates, (2) yielding nails, and (3) yielding bolts. To verify its behavior under arbitrary dynamic loadings, the proposed model is implemented in a nonlinear dynamic analysis program for single-degree-of-freedom (SDF) systems. Three SDF wood systems are subjected to the Loma Prieta accelerogram to obtain their response time histories. Advantages of using the proposed model over currently available models in nonlinear dynamic analysis of more complex systems are identified. A multi-degree-of-freedom shear building model incorporating the proposed hysteresis model is formulated but not implemented on a computer. For more realistic loadings, the random characteristics of earthquakes are modeled as a stochastic or random process. Nonlinear response statistics of SDF wood systems are obtained by Monte Carlo simulation and statistical linearization. The statistical linearization solutions are shown to give reasonably good estimates of mean-square response, for a range of practical system and model parameter values. An example verification procedure that can be used in applying the method to practical engineering problems is presented. The response analysis technique is general and can be applied not only in random vibration analysis of wood structural systems but also in the analysis of a wide variety of hysteretic systems with general pinching behavior, including reinforced concrete structures, braced steel frames and laterally loaded piles. Potential practical applications of the analysis method and of the response statistics obtained from the analysis are presented. The present work is the first known attempt to use random vibration techniques in studying the response of wood structures under natural hazard loadings. (Abstract shortened by UMI.).

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2023

Mode of access: World Wide Web

ISBN: 9798641362304Subjects--Topical Terms:

860360
Civil engineering.
Subjects--Index Terms:

hysteresisIndex Terms--Genre/Form:

542853
Electronic books.

Stochastic dynamic response of wood structural systems.
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245 1 0 $a Stochastic dynamic response of wood structural systems.
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500 $a Source: Dissertations Abstracts International, Volume: 56-01, Section: B.
500 $a Publisher info.: Dissertation/Thesis.
500 $a Advisor: Dolan, J. Daniel; Singh, Mahendra P.
502 $a Thesis (Ph.D.)--Virginia Polytechnic Institute and State University, 1993.
504 $a Includes bibliographical references
520 $a This dissertation presents a general hysteresis model for wood joints and structural systems, based on a modification of the Bouc-Wen-Baber-Noori (BWBN) model. The hysteretic constitutive law, based on the endochronic theory of plasticity and characterized by a single mathematical form, produces a versatile, smoothly varying hysteresis that models previously observed behavior of wood joints and structural systems, namely, (1) nonlinear, inelastic behavior, (2) stiffness degradation, (3) strength degradation, (4) pinching, and (5) memory. The constitutive law takes into account the experimentally observed dependence of wood joints' response to their past history (i.e., the input and response at earlier times, or memory). Practical guidelines to estimate the hysteresis parameters of any wood joint or structural system are given. Hysteresis shapes produced by the proposed model are shown to compare favorably with experimental hysteresis of wood joints with: (1) yielding plates, (2) yielding nails, and (3) yielding bolts. To verify its behavior under arbitrary dynamic loadings, the proposed model is implemented in a nonlinear dynamic analysis program for single-degree-of-freedom (SDF) systems. Three SDF wood systems are subjected to the Loma Prieta accelerogram to obtain their response time histories. Advantages of using the proposed model over currently available models in nonlinear dynamic analysis of more complex systems are identified. A multi-degree-of-freedom shear building model incorporating the proposed hysteresis model is formulated but not implemented on a computer. For more realistic loadings, the random characteristics of earthquakes are modeled as a stochastic or random process. Nonlinear response statistics of SDF wood systems are obtained by Monte Carlo simulation and statistical linearization. The statistical linearization solutions are shown to give reasonably good estimates of mean-square response, for a range of practical system and model parameter values. An example verification procedure that can be used in applying the method to practical engineering problems is presented. The response analysis technique is general and can be applied not only in random vibration analysis of wood structural systems but also in the analysis of a wide variety of hysteretic systems with general pinching behavior, including reinforced concrete structures, braced steel frames and laterally loaded piles. Potential practical applications of the analysis method and of the response statistics obtained from the analysis are presented. The present work is the first known attempt to use random vibration techniques in studying the response of wood structures under natural hazard loadings. (Abstract shortened by UMI.).
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538 $a Mode of access: World Wide Web
650 4 $a Civil engineering. $3 860360
650 4 $a Wood. $3 540142
650 4 $a Technology. $3 531676
650 4 $a Wood sciences. $3 3168288
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