Plates (Engineering) 112 Shells (Engineering) 49 Mathematical models 25 Vibration 25 Composite materials 13 Girders 13 Mechanical properties 10 Structural dynamics 9 Measurement 8 Thermal properties 8 Impact 7 Strains and stresses 7 Structural analysis (Engineering) 7 Fatigue 6 Laminated materials 6 Testing 6 Composite construction 4 Functionally gradient materials 4 Concrete beams 3 Design and construction 3 Elastic plates and shells 3 Finite element method 3 Piezoelectric materials 3 Sealing (Technology) 3 Smart structures 3 Structural design 3 Boundary element methods 2 Buckling (Mechanics) 2 Computer programs 2 Cylinders 2