Martin, Louis Adolphe, 1880- · New York, J.Wiley & Sons, Inc.: [etc. etc.] · leaf 154
es with the name ofthe axis to which the plane across which the stressoccurs is perpendicular; the second subscript always STRESS, STRAIN, AND ELASTIC FAILURE 133 denotes the axis to which the stress is parallel. Thusthe stresses across face 3 have as first subscript x, fortheir plane dydz is… … / x U <lz. dxdydz P + Fig. 67 there is no need of the second subscript, there being noother px_, it is usually omitted, so that pxx is written px. The reader should now write the names of the stresseson faces 1 and 2 and compare his results with those inFig. 67. Consider the stresses on the face…
Mechanics
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