But it is not precise in general according to our calculations: the symmetry plane in the middle of the beam imposes the null warping condition, but at the ends warping is free except when specially imposed. For the purpose of explanation, both tension and compression differ from each other only in the sign for stresses and displacements. This is, in our understanding, the origin of the usual misunderstanding that concludes that in several cases the CS remains flat after deformation. Se entiende por falla de un cuerpo o de determinadas partes del mismo: a la rotura, o sin llegar a ello, a la existencia de un estado inadecuado. In reality, warping is not uniform.
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