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Dynamic Time Response Analysis Problem
This chapter contains a dynamic time response analysis problem and Creo Simulate's results. In a dynamic time response analysis, Structure calculates the response of your model to time-varying loads. Structure also automatically calculates all predefined measures. This list of measures differs based on the analysis type.
mvst001: 3D Mass-Spring-Damper System
 Analysis Type: Dynamic Time Response Model Type: 3D Comparison: ANSYS No. 74 Reference: Thomson, W.T. Vibration Theory and Applications. NJ: Prentice-Hall, Inc. 2nd printing, 1965. p. 99, Article 4.1. Description: A mass-spring system is subjected to an impact load, and thereafter undergoes free vibration. Determine the deflection at time t = 0.1 sec for a damped and undamped system.
Specifications
 Element Type: mass (1), spring (1) Units: IPS Dimensions: spring length: 10 (arbitrary) Mass Properties: M: 0.5 Mxx: 0 Mxy: 0 Mxz: 0 Myy: 0 Myz: 0 Mzz: 0 Spring Properties: (extensional stiffness) Kxx: 200 Kxy: 0 Kxz: 0 Kyy: 0 Kyz: 0 Kzz: 0 Constraints: placed on point A: fixed in all DOFplaced on point B: fixed in all DOF except TransY Loads: placed on point B: FY = 10Distribution: N/ASpatial Variation: N/A
Comparison of Results Data
 Theory ANSYS Structure1 % Difference Max Deflection @ t = 0.1 (a=undamped) 0.909297 0.90693 0.909297 0.0% Max Deflection @ t = 0.1 (a=damped, damping=70%) 0.3418 0.34252 0.3418 0.0% Convergence %: 0.0% on Frequency Max P: N/A No. Equations: 1
1 You cannot view the results information in the summary file. To view the results, you must define a displacement result window and query the result at t = 0.1.