 1  Author
 FalkH. Koenemann  Requires cookie*   Title
 Unorthodox Thoughts about Deformation, Elasticity, and Stress    Abstract
 The nature of elastic deformation is examined in the light of the potential theory. The concepts and mathematical treatment of elasticity and the choice o f equilibrium conditions are adopted from the mechanics o f discrete bodies, e. g., celestial mechanics; they are not applicable to a change o f state. By nature, elastic deformation is energetically a Poisson problem since the buildup of an elastic potential implies a change of the energetic state in the sense of thermodynamics. In the EulerCauchy theory, elasticity is treated as a Laplace problem, implying that no change of state occurs, and there is no clue in the EulerCauchy approach that it was ever considered as one. The EulerCauchy theory of stress is incompatible with the potential theory and with the nature of the problem; it is therefore wrong. The key point in the understanding of elasticity is the elastic potential.   
Reference
 Z. Naturforsch. 56a, 794—808 (2001); received January 25 2001   
Published
 2001   
Keywords
 Potential Theory, Elasticity, Stress, Poisson Equation, Cauchy Theory   
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