Three fundamental area of engineering mechanics

May 14th, 2015
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Static and dynamics devoted primarily to the study of external effect of forces on rigid bodies Bodies are assumed to be rigid. Strength of materials deals with the relation between externally applied loads and their effect inter effect on bodies

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Simple StressSIMPLE STRESSBy Touhid AhamedIntroductionThree fundamental area of engineering mechanicsareStaticDynamicsStrength of materialsIntroductionStatic and dynamicsdevoted primarily to the study of external effect of forces on rigid bodiesBodies are assumed to be rigidStrength of materialsdeals with the relation between externally applied loads and their effect inter effect on bodiesBodies are no longer assumed to be rigidDeformations, however small, are of major interestReview of Statics The structure is designed tosupport a 30 kN load The structure consists of aboom and rod joined by pins(zero moment connections)at the junctions andsupports Perform a static analysis todetermine the internal forcein each structural memberand the reaction forces atthe supportsStructure Free-Body Diagram Structure is detached from supportsand the loads and reaction forces areindicated Conditions for static equilibrium: M C 0 Ax 0.6 m 30 kN 0.8 m Ax 40 kN Fx 0 Ax C xC x Ax 40 kN Fy 0 Ay C y 30 kN 0Ay C y 30 kN Ay and Cy can not be determinedfrom these equationsComponent Free-Body Diagram In addition to t

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