2020年度学院等開講科目工学院機械系機械コース

剛体系の動力学

開講元: 機械コース
担当教員: 武田行生
授業形態: 講義
メディア利用科目: -
曜日・時限 (講義室): 集中講義等
クラス: -
科目コード: MEC.H435
単位数: 100
開講時期: 2020年度
開講クォーター: 3Q
シラバス更新日: 2025年7月10日
使用言語: 英語

シラバス

授業の目的（ねらい）、概要

The students know the fundamental means for mass balancing and power smoothing of single slider reciprocating machines and other general mechanical systems. The students have the ability to explain and derive the mass forces and mass moments of single and multi-slider reciprocating machines. The students know about the basic relations, resulting in fluctuating angular velocities due to varying mass moments of inertia and varying loads as reduced to a reference shaft. The relations can be derived and explained.

到達目標

The influencing factors for fluctuating speeds in single and multi-slider reciprocating machines can be described. Based on that, potential means for power smoothing can be derived. Students have the ability to derive the required kinematic and dynamic relations for the machines and mechanisms under investigation. Moreover, balancing of machines and mechanisms with high mass forces can be performed, including design issues and mathematical derivations. From the dynamic analyses, students learn to develop practical and innovative instructions for mass balancing and power smoothing. To sum up, student gain fundamental knowledge that can be applied to related industrial challenges (including special machine construction and specifications) in the field of design improvement by means of mass balancing and power smoothing.

キーワード

planar kinematics and dynamics of rigid bodies, dynamic force and motion analysis of planar mechanisms with rigid links, mass balancing for reciprocating machines, power smoothing in mechanisms and slider reciprocating machines, equations of motion

学生が身につける力

専門力
教養力
コミュニケーション力
展開力 (探究力又は設定力)
展開力 (実践力又は解決力)

授業の進め方

The lectures are given by a guest lecturer, Prof. Mathias Huesing, RWTH Aachen University together with the corresponding instructor, Prof. Yukio Takeda.
Students are required to self-study the contents prior to the class using the supplementary material. Based on this, homework problem is given and then, evaluation is done at the final presentation.

授業計画・課題

	授業計画	課題
第1回	Introduction	Plane slider-crank mechanism Dynamically equivalent system for the connecting rod
第2回	Kinematics of the slider-crank mechanism	Inertia forces (shaking forces) Effect of inertia forces acting on the frame
第3回	Effect of inertia forces acting on the frame and basics of balancing of inertia forces/ of shaking forces	The Basics: Balancing of inertia forces / of shaking forces Complete balancing of inertia forces (shaking forces) Balancing by countermass at the crank (1st harmonic)
第4回	Complete balancing of 1st and 2nd harmonic	Experiment: Measurement of shaking forces and balancing of single cylinder engine Inertia / shaking torques (especially frame torque)
第5回	Multi Slider Reciprocating Machines	Design: different structures Determine inertia forces by analytical approach Determine inertia forces by graphical approach Balancing of inertia forces
第6回	Determination of shaking moments of multi-cylinder engines	Balancing of shaking moments of multi-cylinder engines Power balancing: introduction and outlook Kinetic energy Potential energy Solutions of the equation of motion
第7回	Presentation of homework	Application of the content of the lecture in research and applications

準備学修(事前学修・復習)等についての指示

教科書

Original hand-outs are provided.

参考書、講義資料等

References are uploaded in OCW-i.

成績評価の方法及び基準

Learning achievement is evaluated at the final presentation.

履修の条件・注意事項

Nothing