Thin-walled structures Structural analysis (Engineering) 29 Girders 6 Mathematical models 6 Impact 5 Sound 5 Sound-waves 5 Testing 5 Transmission 5 Vibration 5 Airplanes 4 Buckling (Mechanics) 4 Design and construction 4 Materials 4 Structural analysis 4 Building, Iron and steel 3 Cold working 3 Glass fibers 3 Nonlinear theories 3 Radiation sources 3 Reinforced plastics 3 Sheet-steel 3 Shells (Engineering) 3 Steel 3 Aluminum alloys 2 Composite construction 2 Composite materials in automobiles 2 Cracking 2 Dimensional analysis 2 Engineering 2