Mechanics: Statics And Dynamics :: essays research papers fc

Mechanics Statics and DynamicsTABLE OF CONTENTS display.........................................................1ChapterI. General Principles........................................2I. Systems of Force.........................................4II. Stress..................................................6III. Properties of Material.................................7IV. Bolted and Welded Joints................................10V. Beams -- A Practical Application.........................13VI. Beam Design.............................................17VII. Torsional Loading Shafts, Couplings, and Keys........19VIII. Conclusion............................................20BIBLIOGRAPHY.........................................................21INTRODUCTIONMechanics is the physical science concerned with the dynamic behavior ofbodies that are acted on by mechanical disturbances. Since such behavior isinvolved in some all the situations that confront an engineer, mechanicslie at the core of mu ch engineering analysis. In fact, no physical scienceplays a greater position in engineering than does mechanics, and it is the oldest ofall physical sciences. The writings of Archimedes covering bouyancy and thelever were recorded before 200 B.C. Our modern knowledge of gravity and motionwas effected by Isaac Newton (1642-1727).Mechanics can be divided into two parts (1) Statics, which relate tobodies at rest, and (2) dynamics, which deal with bodies in motion. In thispaper we go forth explore the static dimension of mechanics and discuss the varioustypes of force on an object and the different strength of materials.The term strength of materials refers to the ability of the undividedparts of a machine or structure to resist loads. It also permits the selectionof materials and the determination of dimensions to ensure the sufficientstrength of the various parts.General Principles beforehand we can venture to explain statics, one must have a firm grasp onclassical mechanics. Thi s is the study of Newtons integritys and their extensions.Newtons three uprightnesss were originally stated as follows1. Every body continues in its state of rest, or of uniform motionin a straight verge, unless it is compelled to changethat state by forces move on it.2. The change of motion is proportional to the motive force impressedand is made in the direction in which that force isimpressed.3. To every action at that place is always opposed an equal reaction or themutual actions of two bodies on each other are equal anddirect to contrary parts.Newtons law of gravitational attraction pertains to celestrial bodiesor any object onto which gravity is a force and states Two particles will beattracted toward each other along their connecting line with a force whosemagnitude is directly proportional to the product of the masses and inverselyproportional to the distance squared between the particles.When one of the two objects is the basis and the other object is nearthe surface of the earth (where r is about 6400 km) / is essentiallyconstant, then the attraction law becomes f = mg.Another essential law to consider is the Parallelogram Law.