1. Introduction to Engineering Mechanics Dar-Yun Chiang

2. Objectives To provide an introduction of: ※ Fundamental concepts, ※ General principles, ※ Analysis methods, ※ Future Studies in Engineering Mechanics.

3. Outline 1. Engineering Mechanics 2. Fundamental Concepts 3. General Principles 4. Static Analysis 5. Dynamic Analysis 6. Future Studies

4. 1. Engineering Mechanics Mechanics : - Rigid-body Mechanics - Deformable-body Mechanics - Fluid Mechanics Rigid-body Mechanics : - Statics - Dynamics

5. Statics – Equilibrium Analysis of particles and bodies Dynamics – Accelerated motion of particles and bodies Kinematics and Kinetics Mechanics of Materials… Theory of Vibration… 1. Engineering Mechanics

6. 2. Fundamentals Concepts Basic Quantities Length, Mass, Time, Force Units of Measurement m, kg, s, N…(SI, Int. System of Units) - Dimensional Homogeneity - Significant Figures

7. 2. Fundamentals Concepts Idealizations Particles – Consider mass but neglect size Rigid Body – Neglect material properties Concentrated Force Supports and Reactions

8. 3. General Principles - Newton’s Laws of Motion First Law, Second Law, Third Law Law of Gravitational Attraction - D’Alembert Principle : F+(-ma)=0 - Impulse and Momentum - Work and Energy - Principle of Virtual Work (Equilibrium)

9. 4. Static Analysis Force and Equilibrium Force System Resultants Structural Analysis Internal forces Friction Centroid and Moments of Inertia Virtual Work and Stability

10. 5. Dynamic Analysis Kinematics of a Particle Kinetics: Force and Acceleration Work and Energy Impulse and Momentum (Impact) Planar Kinematics and Kinetics 3-D Kinematics and Kinetics Vibrations

11. 6. Future Studies 飛 機 結 構 設 計 目 標 1. 成本及重量 (Cost and Weight) 2. 靜力強度 (Static Strength) 3. 耐久性 (Durability) 4. 耐損傷性 (Damage Tolerance) 5. 耐振顫及振動性 (Flutter and Vibration) 6. 耐腐蝕性 (Corrosion Resistance) 7. 耐毀損性 (Crashworthiness) 8. 維修及製造簡易性

12. 6. Future Studies 材料力學、高等材力、結構力學 、 彈性力學 複合材料力學、破壞力學、連體力學 、 塑性力學 黏彈性力學 、 板殼分析、結構穩定學、有限元素法 流體力學 、 空氣動力學、熱力學、熱傳與燃燒 … 振動學、非線性振動學、混沌振動學 高等動力學、結構動力學、隨機振動 … 數值分析、機率與統計、信號處理、智慧型計算 最佳化分析、導航與控制、系統識別、 …

13. Ultimate Challenge