飞机结构设计目标1.ppt课件

1、Introduction to Engineering MechanicsDar-Yun Chiang Objectives To provide an introduction of: Fundamental concepts, General principles, Analysis methods, Future Studies in Engineering Mechanics.Outline1. Engineering Mechanics2. Fundamental Concepts3. General Principles4. Static Analysis5. Dynamic An

2、alysis6. Future Studies 1. Engineering MechanicsMechanics :- Rigid-body Mechanics- Deformable-body Mechanics- Fluid MechanicsRigid-body Mechanics : - Statics - DynamicsStatics Equilibrium Analysis of particles and bodiesDynamics Accelerated motion of particles and bodies Kinematics and KineticsMecha

3、nics of MaterialsTheory of Vibration1. Engineering Mechanics2. Fundamentals Concepts Basic QuantitiesLength, Mass, Time, ForceUnits of Measurementm, kg, s, N(SI, Int. System of Units)- Dimensional Homogeneity- Significant Figures2. Fundamentals Concepts IdealizationsParticles Consider mass but negle

4、ct sizeRigid Body Neglect material propertiesConcentrated ForceSupports and Reactions3. General Principles- Newtons Laws of MotionFirst Law, Second Law, Third LawLaw of Gravitational Attraction- DAlembert Principle : F+(-ma)=0- Impulse and Momentum- Work and Energy- Principle of Virtual Work (Equili

5、brium)4. Static Analysis Force and EquilibriumForce System ResultantsStructural AnalysisInternal forcesFrictionCentroid and Moments of InertiaVirtual Work and Stability5. Dynamic AnalysisKinematics of a ParticleKinetics: Force and Acceleration Work and EnergyImpulse and Momentum (Impact)Planar Kinem

6、atics and Kinetics3-D Kinematics and KineticsVibrations6. Future Studies飛 機 結 構 設 計 目 標 1. 本钱及分量 (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6. Future Studies资料力學、高等材力、結構力學、彈性力學複合资料力學、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