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The right shell makes full use of the strength of the material, and at the same time integrates the two functions of load-bearing and enclosure into one. In practical engineering, the cutting and combination of spatial surfaces can also be used to form buildings with strange and novel shapes that can adapt to various planes.

The right shell, a fundamental structural form in engineering applications, resists external loads primarily through medium plane stress that distributes uniformly across its thickness dimension, rather than depending on bending stress that varies significantly through the depth of the material. This distinctive internal force distribution mechanism inherent to the right shell's geometry allows for substantially more efficient utilization of the material's structural capacity when compared to flat plate systems, thereby enabling the shell structure to achieve a greater overall bearing capacity and load-carrying capability.

The theory of the right shell belongs to the category of applied elasticity, and it is necessary to introduce a new hypothesis in addition to the basic hypothesis of elasticity. It includes thin shell theory and medium thick shell theory.