Voids in solder joint under high environmental pressure

OPTI_222_W9.pdf

That should give you an understanding of pure bending, but isn't really necessary for estimating the approximate peak stress, and isn't adequate for an exact solution. The basic stress equations I presented in my second message, which passed this one in the mail, should be easy to verify in Marks' Standard Handbook for Mechanical Engineers, any mechanics of materials textbook, or probably Wikipedia, easy to solve, and probably adequate, especially with a safety factor of 1.5 or more.

Regards, Glen