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4. Constitutive equations
Conservation relationships reveal physical quantities specific to the materials used. Additional constitutive equations translate the behavior of materials under the action of external actions. Although there are many constitutive relationships, the following is limited to a few laws commonly used to model changes in material properties during the molding phase of structural composites.
4.1 Mechanical stress
The mechanical stresses examined in this section are those encountered in molding processes. Those specific to forming processes are described in article
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Constitutive equations
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