Stress Table for Ship Design: Quiz and Flashcards

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Questions and Answers

What is the light displacement of the ship?

2600 tonnes

2800 tonnes

2400 tonnes (correct)

2200 tonnes

What is the load displacement of the ship when cargo is equally distributed in CH#2?

2520 tonnes (correct)

2620 tonnes

2320 tonnes

2420 tonnes

What is the linear density of the cargo in CH#2?

6 t/m (correct)

7 t/m

8 t/m

5 t/m

What is the length of CH#2?

20m Signup and view all the answers

What is the volume of the ship?

2400 m3 Signup and view all the answers

What is the density of the water used in the calculation?

1.0 tonne/cu.m Signup and view all the answers

What is the primary purpose of stress tables in ship design?

To analyze the ship's structural integrity and stability Signup and view all the answers

What does a stress table provide information about?

The ship's structural members and their maximum allowable stresses or loads Signup and view all the answers

What is the relationship represented in a stress table?

Between the applied stress and the corresponding deflection of the ship's hull Signup and view all the answers

Who uses stress tables to ensure a ship's stability and structural integrity?

Naval architects and engineers Signup and view all the answers

What is the unit of measurement for the allowable bending moment in a stress table?

kNm Signup and view all the answers

What is the purpose of analyzing stress tables in ship design?

To ensure the ship's stability and prevent structural failures Signup and view all the answers

What is the primary purpose of stress tables in ship design?

To ensure the vessel can handle expected loads and environmental conditions Signup and view all the answers

What is the main challenge in calculating the necessary strength of ship structures?

The many and varied forces acting on the ship structure Signup and view all the answers

Which of the following is a dynamical force acting on a ship structure?

Pitching due to wind and waves Signup and view all the answers

What is the purpose of classification societies in ship design?

To provide guidelines for stress analysis and assessment Signup and view all the answers

What is the bending of ships likened to in many cases?

The bending of a beam Signup and view all the answers

Which of the following is a statical force acting on a ship structure?

The weight of the ship's structure Signup and view all the answers

Study Notes

Shear Force and Bending Moment Diagram

Load curve represents the distribution of weight along the ship's length
Light displacement = (L x B x D) x density = 2400 tonnes
Light displacement / length overall = 40 t/m (on lightweight)
Cargo equally distributed in CH#2 (Trimmed): 120 tonnes / 20m = 6 t/m (on deadweight)
Load displacement = light displacement + load weight (or deadweight) = 2520 tonnes
Load displacement / length overall = 2520 t / 60 m = 42 t/m (on buoyancy)

Stress Tables and Ship Stability

Stress tables represent the relationship between applied stress and corresponding deflection of the ship's hull
Used to assess a ship's structural integrity and stability under various loading conditions
Essential tool for naval architects and engineers to ensure ship's structure remains within safe limits during operation
Typical stress table contains information about ship's structural members (frames, bulkheads, decks, hull plating) and maximum allowable stresses or loads

Beam Theory and Bending of Ships

Bending of ships likened to bending of beams
Calculating necessary strength of ships made difficult by varied forces (statical and dynamical)
Statical forces include weight of structure, buoyancy forces, hydrostatic pressure, and concentrated local weights
Dynamical forces include pitching, heaving, and rolling due to wind and waves

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Description

This quiz covers the importance of stress analysis in ship design, construction, and operation. It explains how stress tables vary depending on ship type, size, and intended use, and how different classification societies have their own standards and guidelines.