SimpleCompound Pendulum and Free Vibration Experiments

소개글

성대 진동실험 A+ 받은 레포트 입니다

목차

1.Simple/Compound Pendulum Experiments
2. Theory
3. Experimental System
4. Method for Experiments

-Result & Discussion
1. Measured Data
2. Discussion

2. Free Vibration Experiment
2. Theory
3. Two-degrees-of-reedom system
4. Methods of Experiments

-Result & Discussion
1. Measured Data
2. Discussion

본문내용

1.Simple/Compound Pendulum Experiments
-Preliminary report
1. Overview of Experiments
As a pendulum`s length increases, the time that a pendulum returns to original position, referred to as a period, gets increased after its motion. The period of a pendulum is not simply proportional to the length of a pendulum, and it is necessary to understand the characteristics of its dynamics based on the analysis of a system model.
In this experiment, to understand the relations between simple and compound pendulums, the analysis on a simple pendulum having a concentrated point mass is firstly conducted, and then the analysis on a compound pendulum having a specific shape is also carried out. In addition, in the case of a compound pendulum, the concept of the center of percussion and the effect of friction due to a pendulum`s rotational motion are experimentally studied.

2. Theory
A. Simple Pendulum
A simple pendulum is one which can be considered to be a point mass suspended from a string or rod of negligible mass. The schematic diagram of a simple pendulum is given in Fig. 2.4.1, and its free body diagram (FBD) and equivalent dynamic diagram (EDD) are given in Fig. 2.4.2. From Fig. 2.4.2, the following equation (4.1) can be derived by considering force equilibrium along a tangent direction.

참고 자료

진동 및 동적 시스템 실험 manual(English+version)
http://wikis.controltheorypro.com/index.php?title=Vibration_in_Systems_with_Two_Degrees_of_Freedom