The article presents the results of a study characteristics space parabolic mirror with deployable reflector. A model reflector truss structure formed by two asymmetric networks tension cables is presented. Three variants sparse reflecting film are presented, differing in periodically repeating hexagonal holes different sizes. complex electrodynamic modeling radiation antenna developed truss-be...

A critical study of the process necessary to create structural control models is made. Exact closed-form solutions of beams and truss-beams continuous models open and closed loop dynamics are given, and used to evaluate the low frequency accuracy of hand prefined finite element models. For trusses condensed models and refined joint behavior are considered, using the equivalent continuum approac...

the purpose of this study is to determine the effect of vierendeel panel width and vertical truss spacing ratio in an inelastic behavior of the stf system due to earthquake loads. the stf system is applied to a six-storey building that serves as apartments [2]. the stf system is used in the building in the transverse direction (n-s direction), while in the longitudinal direction (w-e direction)...

This paper proposes a modified sine cosine algorithm (MSCA) for discrete sizing optimization of truss structures. The original sine cosine algorithm (SCA) is a population-based metaheuristic that fluctuates the search agents about the best solution based on sine and cosine functions. The efficiency of the original SCA in solving standard optimization problems of well-known mathematical function...