複素係数ディジタルフィルタに関する研究

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著者

    • 尾知, 博 オチ, ヒロシ

書誌事項

タイトル

複素係数ディジタルフィルタに関する研究

著者名

尾知, 博

著者別名

オチ, ヒロシ

学位授与大学

東京都立大学

取得学位

工学博士

学位授与番号

乙第763号

学位授与年月日

1991-03-14

注記・抄録

博士論文

The design of the friction-type connections fastened with high-strength bolts has been made based upon the traditional elastic vector analysis, despite the fact that the resisting mechanism of the friction-type is different from that of a riveted connection. Discussion has been provoked with respect to the actual behavior of the friction-type connections and the lack of the conformity in the existing design provisions. Rationalization for both design and construction corresponding to the multi-plied and complicated reaction forces in parallel with the tendency of structures being steered into directions of giantism and diversification in recent years has strongly been required with respect also to the friction-type connections. As the structural design concept is varied, the working stress method is converted into the limit state design method via the ultimate design method. This compels the connection design to comply with a new situation. With such backgrounds behinds us, successive experimental works relating to the friction-type connections have been intensively carried out in the individual researching fields in our private, official and academic circles in recent years. However the experimental studies are insufficient as a means of establishing the verification between the cause and effect, due to the existence of too many of factors to determine the dynamic configuration. Moreover to extensively systematize the diversified kinds of excessively large-sized connections and to get to work for the practical design, a huge amount of time and labor together with expense is expected to be required. This means that it is substantially impossible to systematize the wide-variety connections just by means of experiments. Thus analytical studies are earnestly required to solve such a problem, and an analytical model with which the explanation of the actual slipping behavior is to be provided is desired to be developed. In this paper, slipping resistance characteristics of the friction-type connections with high-strength bolts are explained from the standpoints of both the experiment and the nonlinear analysis utilizing a discrete model. Further-more establishment of a more rational design method availing itself of the utmost of the solution of the various kinds of problems previously described and the intrinsic characteristics of the friction-type connections is intended. In the analytical study, new inelastic analysis method utilizing two discrete model, RBSM (Rigid Body-Spring Model) and PIFESM (Parabolic Iso-parametric Finite Element-Spring Model) is developed. Proposed method is able to simulate partial slip behavior of the friction-type connections under every sorts of loadings, and accordingly the method is available to investigate shape effects, combined effects of web connection and flange connections, slip strength under eccentric loadings and fatigue strength. Depending on the facility required of the practical engineer, the results obtained in this study are shown in a graphic form and/or tabulated form. This paper consists of nine chapters and each chapter is outlined below. Chapter 1 gives an outline of former studies on slipping problem of the friction-type connections, and explains the subJect of this study. A list of principal symbols and terminology used in this paper is presented in this chapter. Chapter 2 develops new discrete models (RBSM and PIFESM) for slipping problem of the connections. These models are able to simulate discontsinuous partial slipping behavior of the connections up to the state of major slipping. The shear spring, Which connects base plate and splice plate, has nonlinear properties that the shear force, when itreaches critical shear force against local slip. holds the same value of critical one. As the installed bolt tension changes with longitudinal normal stress by Poisson's ratio, the critical shear force also changes. The initial shear-spring constant is determined by setting the total shear strain energy in the spring equally to the one in the plates with two compensation factors. Chapter 3 includes the analytical method and programing technic. Linear relationship between shear force and relative displacement is no longer valid once a local slip occurs. To obtain the equilibrium position of the nonlinear system, the direct iteration method is used. Chapter 4 verifies the proposed analytical method by comparing the theoretical results with the results of test carried by Hlonshu-Shikoku Bridge Authority. Major slip load, bolt force, load-displacement relationship and normal stress are compared, and there is a good agreement. A few characteristics of the friction type connections is obtained through this verification process. Chapter 5 shows existence of some sort of correlation between the fatigue strength and the partial slip load of the edge bolt. According to this correlation, an attempt is made for prediction of the relative fatigue strength of the connections from partial slip stress of the edge bolt. Chapter 6 presents application to shape effect problem of the connections and shows fluctuations in the slip loads exerted by the factors among them such as the cross sectional dimensions of plates, joint length, bolt arrangement and so forth. Chapter 7 describes frictional resistance characteristics of the plate girder connections and proposed a more reasonable and convenient design method. The discussion is concentrated on the effects of combined web connection and flange connections. Two types of the combined connections are loaded in pure bending. The results show that the web connection and flange connection work organically and complimentarily to each other. The experimental results are confirmed by computer simulation using quasi three dimensional analytical method. Chapter 8 presents slip behavior of the friction-type connections acted upon by the in-plane combined moment and direct shear and recommends a strength approach with modified coefficients for plate girder connections ande ccentric connections. Chapter 9 includes the conclusions obtained from this study.

東京都立大学, 1991-03-14, 工学博士, 乙第763号

目次

  1. 目次 / (0003.jp2)
  2. 第1章 序論 / p1 (0005.jp2)
  3. 1.1 研究の背景と目的 / p1 (0005.jp2)
  4. 1.2 研究の概要 / p6 (0010.jp2)
  5. 第2章 Lpノルム評価によるヒルベルト変換器の設計 / p9 (0013.jp2)
  6. 2.1 まえがき / p9 (0013.jp2)
  7. 2.2 設計法の定式化 / p11 (0015.jp2)
  8. 2.3 初期値の設定法 / p13 (0017.jp2)
  9. 2.4 設計例 / p15 (0019.jp2)
  10. 2.5 むすび / p18 (0022.jp2)
  11. 第3章 複素係数FIRフィルタの最適設計 / p19 (0023.jp2)
  12. 3.1 まえがき / p19 (0023.jp2)
  13. 3.2 最適設計法 / p20 (0024.jp2)
  14. 3.3 設計例 / p27 (0031.jp2)
  15. 3.4 むすび / p30 (0034.jp2)
  16. 付録 / p31 (0035.jp2)
  17. 第4章 複素係数FIRフィルタの振幅・位相同時設計法 / p33 (0037.jp2)
  18. 4.1 まえがき / p33 (0037.jp2)
  19. 4.2 線形計画法を用いた設計法 / p34 (0038.jp2)
  20. 4.3 設計例 / p43 (0047.jp2)
  21. 4.4 むすび / p47 (0051.jp2)
  22. 第5章 複素係数フィルタを用いた実係数フィルタの一構成法 / p48 (0052.jp2)
  23. 5.1 まえがき / p48 (0052.jp2)
  24. 5.2 回路構成 / p50 (0054.jp2)
  25. 5.3 回路の特徴 / p54 (0058.jp2)
  26. 5.4 解析例 / p57 (0061.jp2)
  27. 5.5 むすび / p59 (0063.jp2)
  28. 付録 / p60 (0064.jp2)
  29. 第6章 結論 / p61 (0065.jp2)
  30. 謝辞 / p63 (0067.jp2)
  31. 参考文献 / p64 (0068.jp2)
  32. 付録 本研究に関する発表論文 / p67 (0071.jp2)
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各種コード

  • NII論文ID(NAID)
    500000077831
  • NII著者ID(NRID)
    • 8000000078034
  • DOI(NDL)
  • 本文言語コード
    • jpn
  • NDL書誌ID
    • 000000242145
  • データ提供元
    • 機関リポジトリ
    • NDL-OPAC
    • NDLデジタルコレクション
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