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Dynamic Shock Response Analysis Problem
This chapter contains a dynamic shock response analysis problem and Creo Simulate's results. In a dynamic shock response analysis, Structure calculates maximum values of displacements and stresses on your model in response to a base excitation with a specified response spectrum. Structure also automatically calculates all predefined measures. This list of measures differs based on the analysis type.
mvsk001: Seismic Response of a Beam Structure
 Analysis Type: Dynamic Shock Model Type: 3D Comparison: ANSYS No. 70 Reference: Biggs, J. M. Introduction to Structural Dynamics. McGraw-Hill Book Co., New York, 1964. Description: A simply supported beam is subjected to a vertical motion of both supports. The motion is defined in terms of a seismic displacement response spectrum. Determine the maximum displacement and the corresponding maximum bending stress.
Specifications
 Element Type: beam (2) Units: IPS Dimensions: length: 240height: 14 Beam Properties: Area: 273.9726IYY: 333.333Shear FY: 0.83333CY: 7 J: N/AIZZ: 333.333Shear FZ: 0.83333CZ: 7 Material Properties: Mass Density: 0.00073Cost Per Unit Mass: 0Young's Modulus: 3e7 Poisson's Ratio: 0.3Thermal Expansion: 0Conductivity: 0 Constraints: Location: Degrees of Freedom: constraint1 placed on point A fixed in TransY and TransZ placed on point B fixed in TransX, TransY, TransZ placed on point C fixed in TransZ, RotX, RotY Response Spectrum: Frequency: Displacement: resp_spectrum1 010 0.440.44
Comparison of Results Data
 Theory ANSYS Structure % Difference Frequency 6.0979 6.0974 6.0953 0.04% Max. Displacement(m=disp_max) 0.560 0.553 0.560 0% Max. Bending Stress 20158 20156 20138 0.1% Convergence %: 0.0% on Frequency Max P: 6 No. Equations: 70