Transcription of COURSE OBJECTIVES CHAPTER 6 6. SHIP STRUCTURES
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I COURSE OBJECTIVES CHAPTER 6 6. SHIP STRUCTURES 1. Qualitatively describe: a. How shear stress is created in a ship structure b. The effect of shear stress on a ship structure c. why longitudinal bending is created in a ship structure d. the effect of longitudinal bending moments on a ship structure e. Hull-superstructure interaction, including use of expansion joints 2. Define hogging and sagging. 3. Identify waves which can increase hogging and sagging. 4. Define the neutral axis of a structural cross section and know its significance to bending stress. 5. Use the elastic flexure formula to describe the distribution of bending stress in a section.
This last method is obviously more feasible. An analysis as described above can easily identify areas of a ship where shear forces will be generated. Using higher strength materials or increasing the cross sectional area of the ship structure at these points will reduce the possibility of the structure failing due to shear.
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