DESIGNING OF AIRFRAMES HAVING MINIMUM MASS UNDER SEVERAL LOADINGS (NOT ONLY FULLY STRESSED)

摘要

We discuss the features of optimal force transfer and use them to develop the method for discovering the distribution of material of structure for obtaining its minimal volume. The suggested method works with one or several external loadings and allows one to discover the optimal structure and to recognize the phenomenon of Razani in which a structure with unequal stresses due to several loadings is more light-weighted than fully stressed. With using the developed method we have solved the original Razani problem and apply it for wing optimization of the novel hypersonic airplane.