EXPECTED PRINCIPAL STRESS DIRECTIONS UNDER MULTIAXIAL RANDOM LOADING - PART II - NUMERICAL-SIMULATION AND EXPERIMENTAL ASSESSMENT THROUGH THE WEIGHT FUNCTION-METHOD

In Part I of the present work, the theoretical aspects of a proposed p rocedure to determine the expected principal stress directions under m ultiaxial random loading have been discussed. This procedure consists of averaging the instantaneous values of the three Euler angles throug h weight functions. In Part II here, a numerical simulation is present ed to illustrate the above theoretical method. As an example, the algo rithm proposed is applied to some experimental biaxial in- and out-of- phase stress states to assess the correlation between the expected pri ncipal stress directions and the position of the experimental fatigue fracture plane for such tests. (C) 1998 Elsevier Science Ltd. All righ ts reserved.