Girders Plates (Engineering) 13 Columns 12 Mathematical models 11 Structural dynamics 10 Strains and stresses 9 Shells (Engineering) 8 Testing 8 Vibration 8 Impact 7 Structural analysis (Engineering) 7 Design and construction 6 Thin-walled structures 6 Structural engineering 5 Cables 4 Composite construction 4 Finite element method 4 Structural frames 3 Airplanes 2 Aluminum 2 Bending moment 2 Composite materials 2 Computer-aided engineering 2 Elastic analysis (Engineering) 2 Engineering mathematics 2 Fatigue 2 Nondestructive testing 2 Nonlinear acoustics 2 Prestressed concrete beams 2 Sandwich construction 2