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所在平台: Udemy |
课程主页: https://www.udemy.com/course/mechanical-vibrations-fundamentals/
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课程名称：机械振动基础 课程概述：本课程将深入探讨机械振动的基本概念和性质，内容涵盖机械振动系统的回顾、日常生活和工业中振动的存在、机器和设备中振动产生的原因、振动控制的重要性、剧烈和异常振动导致的灾害，以及振动控制的必要性。课程内容包括振动系统的分类、振动激励类型、自由振动/自然振动、共振、阻尼和非阻尼振动、自由非阻尼振动、自由阻尼振动、强迫非阻尼振动、强迫阻尼振动、振动放大及其通过阻尼控制方法、阻尼自然频率、牛顿运动方程法、能量法、激励频率、扭转系统、振动系统建模、离散参数建模、线性振动、自由与谐波激励下的系统响应、单自由度与多自由度系统、旋转机械振动、旋转不平衡建模、基础激励、振动传递性与隔离、振动位移、速度与加速度、基频、自然频率与模态形状、时间与频率响应、系统响应的仿真等。课程还将介绍如何避免机器设计与运行中的临界频率。 通过本课程，学员将掌握机械振动的基本原理，能够有效识别和控制振动现象，并能应用相关知识进行机械系统的设计与分析。
This course of mechanical vibrations will cover the basic and fundamental nature and concepts on the vibration of mechanical systems including: review of systems for mechanical vibrations, existence of vibrations in daily life and industry, causes of vibrations in machines and equipment, why the control of vibration is necessary, catastrophe of harsh and abnormal vibrations, why vibration control is necessary, classification of vibratory systems, type of vibration excitation, free/natural vibrations, resonance, damped and undamped vibrations, free undamped vibrations, free damped vibrations, forced undamped vibrations, forced damped vibrations, vibration amplification and its control through damping, damped natural frequency, Newton's method for equation of motion, energy method for equation of motion, frequency of excitation, torsional systems, modeling of vibratory systems, lumped parameter modeling, linear vibrations, systems' response to free and harmonic excitation, single and multiple degree of freedom systems, rotatory machines vibrations, modeling of rotating unbalance, base-excitation, vibration transmissiblity and isolation, vibration displacement, velocity and acceleration, fundamental frequency, natural frequencies and mode shapes, time and frequency response, simulations of systems response to interpret systems' behavior at frequency ratios below less than 1, equal to 1 and above 1. Critical frequencies for machine's operation, how to avoid critical frequencies during machines design and functioning.
