Structural mechanics is the calculation of deformations, deflections, and internal forces or stresses within structures, either for design or for performance evaluation of existing structures. It deals with the strength calculation of components, material molded parts, component groups, etc., which consist of solid materials such as steel, aluminum, other metal, plastic, rubber, composite material, concrete, wood, glass or others.

Structural mechanics is a technical discipline in which mechanical solid models are created, the solid components to be examined are subdivided into finite substructures and subjected to external mechanical or thermal loads (using the free-cutting principle in the case of vector-valued and directional quantities). As a rule, the contours of the finite individual elements of the substructures correspond to elementary geometric shapes. The interfaces of the individual elements of the finite substructures can then be used to more precisely calculate sizes and states vertically, tangentially or at an angle to these limits in the interior of the solid-state components and thus to gain information about conditions inside the component. Structural mechanics is an interdisciplinary engineering field, which has applications in mechanical engineering (and in particular in vehicle construction, but also in many other branch disciplines), in construction (and in particular in steel construction), in aerospace technology and in defense technology.

*This article is based on the article Structural Mechanics from the free Wikipedia encyclopedia and is licensed under the GNU Free Documentation License. A list of authors is available on Wikipedia.*