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a) b)

Figure 1.10

For convenience, the complete mathematical analysis of stress

S is decomposed into two components: one - directed normal to
the section  - normal stress; second - lying in the plane of
section;  - shear stress.

1.7 The relation between internal force factors and
stress

In the science of strength of materials normal and tangential
stresses are very important because their values characterize the
strength of the deformed body.

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