Abstract
In the present work, experimental results have been reported to show that for BSCF material, an extremely brittle material, the fracture stresses in three-point bending tests and ring-on-ring tests were consistently (room temperature to 800 °C) different. Several material models have been used to see if such discrepancy can be explained even qualitatively. Prospects of Drucker–Prager (DP) model in both qualitatively and quantitatively explaining this behavior has been discussed in the paper. Power law form of extended DP model, a generalized form of DP model, has been fitted to the experimental data at different temperatures. Finite element simulations are run and the results are compared against the experimental findings.
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