CHAPTER 1- Review.pdf - Alexandria University Faculty of...

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Alexandria University Dept. of Marine Engineering & Naval Architecture Faculty of EngineeringInstructor: Prof. H. W. LehetaCHAPTER 1 REVIEW 1.1 Types of structures and supports Structures are made up of structural members. Structural members carrying tensile force are referred to as tieswhile those carrying compressive force are referred to as struts. In general members carrying axial force are referred to as rods or bars. A columnis a slender member that may buckle under compressive loads. Shaftsare subjected to twisting moment or torque. A beamis a straight horizontal member carrying vertical loads that produce bending moments. A special case of the beam is called a cantilever, where one end is fixed and provides all the necessary support. A beam-columncombines the functions of beams and columns. A cableis a flexible string under tension which connects two bodies. It cannot carry a bending moment. An arch is the same as a beam but is curved in shape. Carrying a load over an area or space can be achieved by plates, panelsor shells(curved). Fig. 1.1 shows the different types of structural members. Fig. 1.1 1
Alexandria University Dept. of Marine Engineering & Naval Architecture Faculty of EngineeringInstructor: Prof. H. W. LehetaStructures must be supported. These supports will provide the required reaction forces to maintain equilibrium. Examples of supports are shown in Fig. 1.2. In the

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