This paper presents the results of the first phase of work on developing
computational model of inflated modular shells. This type of bending active structures is composed
of relatively small, modular inflatable cushions combined with cables and crossbraces. The
structure is self-erecting. Introduction of tension to the cable gives it shape and load carrying
capacity. The initial experiments confirmed their technological feasibility. At the present stage
the relationship between tensile force in the cable, and the initial deformation of the structure
were analyzed. Modular shell was approximated by an elastic rod. The impact of the internal
structure of the coating on the computational model is the
subject of further research