Coupling coefficients for thin shells of arbitrary curvature based upon a ray-theoretic approach devised by the authors are benchmarked against exact and high-frequency results for canonical geometries, i.e., the spherical nd infinite circular cylindrical shells. The well-known high-frequency approximations of the coupling coefficients are found to describe their magnitude accurately but not th...

The future X-ray observatory missions require grazing-incidence x-ray optics with angular resolution of < 5 arcsec halfpower diameter. The achievable resolution depends ultimately on the quality of polished mandrels from which the shells are replicated. With an aim to fabricate better shells, and reduce the cost/time of mandrel production, a computercontrolled polishing machine is developed for...

Cylindrical shells are principal structural elements that used for many purposes, such as offshore, sub-marine, and airborne structures. The nonlinear mechanics model of internal blast loading was established to predict the dynamic pressure cylindrical shells. However, due complexity mechanical model, solution process is time-consuming. In this study, linearized, solved. First, a subjected prop...

Abstract Cylindrical shell structures are ubiquitous and essential supporting in various engineering applications. The aim of this research work is to provide a comprehensive overview the behavior cylindrical under different loading conditions, including external pressure, axial compression, bending moment. study found that shells was affected by their geometry, diameter, length, thickness, imp...