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  • ISBN:9787548737810
  • 装帧:一般轻型纸
  • 册数:暂无
  • 重量:暂无
  • 开本:26cm
  • 页数:206页
  • 出版时间:2021-05-01
  • 条形码:9787548737810 ; 978-7-5487-3781-0

内容简介

如今,工程结构的设计,即大跨度桥梁,高层建筑,体育场,机场航站楼和海上平台,都在其承载能力和自重之间寻求较大的比例,以实现美观和经济。然而,这些轻质和柔性结构的类型将导致大的变形和在负载下的过度振动。此外,这些结构可能会遭受一些极端的激励,例如强风,地震作用,高冲击力的碰撞以及水波流的冲击。因此,在满足设计服务要求时,为了获得良好的结构性能,研究动态载荷下的结构性能至关重要。结构动力学的基本概念对工程师理解结构振动和采取适当措施很有帮助。本书介绍了“结构动力学”的基本概念和基本原理。尽管这本书着重于结构动力学中的线性问题,但也简要介绍了一些非线性问题的解决方案。应该注意的是,随机振动超出了本书的范围,此处不包括在内。本书的主要内容包括:结构动力学概述,系统运动方程的公式化,SDOF系统动态响应分析,MDOF和连续系统动态响应分析:模式叠加法,近似评估固有频率和模式形状,逐步积分方法等本书提出了三项原始的贡献,即弹性系统动力学中具有固定值的总势能原理,用于组装系统矩阵的“正确设置”规则以及在Matlab中的计算机实现方法。此外,本书以简洁的方式介绍了结构动力学的基本概念,而不是进行详细的介绍,这对于初学者来说,更有效地理解振动分析的基本概念和方法。

目录

Chapter 1 Overview of Structural Dynamics
1.1 Objective of structural dynamic analysis
1.2 Characteristics of structural dynamics
1.3 Classification of vibrations
1.4 Vibration problems in engineering
1.5 Procedures of dynamic response analysis of structures
Problems
References
Chapter 2 Formulation of Equations of Motion of Systems
2.1 System constraints
2.2 Representation of system configuration
2.3 Real displacements, possible displacements and virtual displacements
2.4 Generalized force
2.5 Conservative force and potential energy
2.6 Direct equilibrium method
2.7 Principle of virtual displacements
2.8 Lagrange's equation
2.9 Hamilton's principle
2.10 Principle of total potential energy with a stationary value in elastic syste m dynamics
2.11 The 'set-in-right-position'rule for assembling system matrices and method of
computer implementation in Matlab
Problems
References
Chapter 3 Analysis of Dynamic Response of SDOF Systems
3.1 Analysis of free vibrations
3.2 Response of SDOF systems to harmonic loads
3.3 Vibration caused by base motion and vibration isolation
3.4 Introduction to damping theory
3.5 Evaluation of viscous-damping ratio
3.6 Response of SDOF systems to periodic loads
3.7 Response of SDOF systems to impulsive loads
3.8 Time domain analysis of dynamic response to arbitrary dynamic loads
3.9 Frequency domain analysis of dynamic response to arbitrary dynamic loads
Problems
References
Chapter 4 Analysis of Dynamic Response of MDOF Systems: Mode Superposition Method
4.1 Analysis of dynamic properties of MDOF systems
4.2 Coupling characteristics and uncoupling procedure of equations of MDOF systems
4.3 Analysis of free vibration response of undamped systems
4.4 Response of undamped systems to arbitrary dynamic loads
4.5 Response of damped systems to arbitrary dynamic loads
Problems
References
Chapter 5 Analysis of Dynamic Response of Continuous Systems:Straight beam
5.1 Differential equations of motion of undamped straight beam
5.2 Modal expansion of displacement and orthogonality of mode shapes of straight beam
5.3 Free vibration analysis of undamped straight beam
5.4 Forced vibration analysis of undamped straight beam
5.5 Forced vibration analysis of damped straight beam
Problems
References
Chapter 6 Approximate Evaluation of Natural Frequencies and Mode Shapes
6.1 Rayleigh energy method
6.2 Rayleigh-Ritz method
6.3 Matrix iteration method
6.4 Subspace iteration method
6.5 Reduction of degrees of freedom in dynamic analysis
Problems
References
Chapter 7 Step-by-step Integration Method
7.1 Basic idea of step-by-step integration method
7.2 Linear acceleration method
7.3 Wilson-0 method
7.4 Newmark method
7.5 Stability and accuracy of step-by-step integration method
Problems
References
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