From your experience with Prob. 6–71 and Ex. 6–19, you observed that for completely reversed axial and bending fatigue, it is possible to • Observe the COVs associated with a priori design considerations. • Note the reliability goal. • Find the mean design factor nd that will permit making a

Question

From your experience with Prob. 6–71 and Ex. 6–19, you observed that for completely reversed axial and bending fatigue, it is possible to
• Observe the COVs associated with a priori design considerations.
• Note the reliability goal.
• Find the mean design factor [latex]\bar{n}_{d}[/latex] that will permit making a geometric design decision that will attain the goal using deterministic methods in conjunction with [latex]\bar{n}_{d}[/latex] .
Formulate an interactive computer program that will enable the user to find [latex]\bar{n}_{d}[/latex] . While the material properties [latex]S _{u t}, S _{y}[/latex] , and the load COV must be input by the user, all of the COVs associated with [latex]\phi _{0.30}, k _{a}, k _{c}, k _{d}, ext { and } K _{f}[/latex] can be internal, and answers to questions will allow [latex]C_{\sigma} ext { and } C_{S}[/latex], as well as [latex] C_{n} ext { and } \bar{n}_{d}[/latex] , to be calculated. Later you can add improvements. Test your program with problems you have already solved.

Accepted Answer

Computer programs are very useful for automating specific tasks in the design process. All computer programs will differ in detail.

Question 6.72: From your experience with Prob. 6–71 and Ex. 6–19, you obser...

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