introduction to engineering mechanics dar-yun chiang
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Introduction to
Engineering
Mechanics
Dar-Yun Chiang
Introduction to
Engineering
Mechanics
Dar-Yun Chiang
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ObjectivesObjectives
To provide an introduction of:
※ Fundamental concepts,
※ General principles,
※ Analysis methods,
※ Future Studies in Engineering Mechanics.
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OutlineOutline
1. Engineering Mechanics2. Fundamental Concepts3. General Principles4. Static Analysis5. Dynamic Analysis6. Future Studies
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1. Engineering Mechanics 1. Engineering Mechanics
Mechanics :- Rigid-body Mechanics- Deformable-body Mechanics- Fluid Mechanics
Rigid-body Mechanics : - Statics - Dynamics
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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 Mechanics1. Engineering Mechanics
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2. Fundamentals Concepts 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
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2. Fundamentals Concepts 2. Fundamentals Concepts
Idealizations
Particles – Consider mass but neglect size
Rigid Body
– Neglect material properties
Concentrated Force
Supports and Reactions
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3. General Principles3. 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)
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4. Static Analysis 4. Static Analysis
Force and EquilibriumForce System ResultantsStructural Analysis Internal forcesFrictionCentroid and Moments of InertiaVirtual Work and Stability
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5. Dynamic Analysis5. Dynamic Analysis
Kinematics of a ParticleKinetics: Force and Acceleration Work and Energy Impulse and Momentum (Impact)Planar Kinematics and Kinetics3-D Kinematics and KineticsVibrations
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6. Future Studies6. 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
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6. Future Studies6. 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、…
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