Problem 4RE

Rivets A company that manufactures rivets believes the shear strength (in pounds) is modeled by N(800, 50).

a) Draw and label the Normal model.

b) Would it be safe to use these rivets in a situation requiring a shear strength of 750 pounds? Explain.

c) About what percent of these rivets would you expect to fall below 900 pounds?

d) Rivets are used in a variety of applications with varying shear strength requirements. What is the maximum shear strength for which you would feel comfortable approving this company’s rivets? Explain your reasoning.

Topic=YellowSubtopic=Green Strength of Materials Brief Review of Statics Types of Support 1 unknown -force with known line of action - eg.; rollers, rockers, frictionless surfaces 2 unknowns -force of unknown direction -eg.; pins, hinges, rough surfaces 3 unknowns -unknown forces and moment -eg.; fixed support Types of Loading Forces: Distributed, point Moments: bending, torsional The Tools Free Body Diagrams (FBD) Equations of Equilibrium - F=0 M=0 Topic=YellowSubtopic=Green Strength of Materials Stress Types of Stress Normal Stress - Perpendicular to plane Tensile Stress (+) Compressive Stress (-) Shearing Stress -