5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM
The maximum number of masses is 100. The program is written for a maximum of 10 different materials. The first seven have been given the following designations:
2 clad lead
7 marine plywood
Stress-strain characteristics for materials 1, 3, 4, and 6 are approximated by a bilinear curve fit which requires as input the modulus of elasticity, the stress at the intersection of the two lines and the slope of the second line.