Chapter 4, Problem 16P

The maximum stress s_max at the edge of a hole (diameter d) in a thin plate. F with width w and thickness t, loaded by a tensile force F as shown is given by: ${\sigma }_{\max }=K_t{\sigma }_{nom}$ where ${\sigma }_{nom}=\frac{F}{t(w-d)}$ and $K_t=\text{3}-\text{3}.\text{14}(d/w)+\text{3}.\text{667}{\left(d/w\right)}^{2-1.527}{\left(d/w\right)}^3$.

Write a program in a script file that calculates s_max. The program should read the values of F, w, d, and t from an ASCII text file using the load command. The output should be in the form of a paragraph combining text and numbers i.e., something like: “The maximum stress in a plate with a width of XX in. and thickness of XX in. and a hole of XX in. in diameter, due to a tensile force of XXX lb is XXXX psi, where XX stands for numerical values.” The stress should be rounded to the nearest integer. Use the program to calculate s_maxwhen w=2.5in., d=1.375in., t=0.1875 in., and F=8000 lb.