Triaxial test is analyzed against background of plastic theory; it is shown that equilibrium conditions and failure criterion such as Coulomb's law are insufficient to define unique failure load, stress-strain relationship is also needed; problem is solved completely for ideally plastic material; significance of test data for sands and alternative yield criterion is suggested. (26 refs.)
No takes yet. Share an insight, caveat, or question.
R. M. Haythornthwaite (1960) studied this question.