McMullen Engineering
Dynamic System Analysis
A three spring, 2 mass, single damper system is analyized using Open Modelica and Scilab Xcos software. The system configuration is: Fixed Support - Spring 1 - Mass 1 - Spring 2 - Mass 2 - Spring - 3 - Damper 1 in Parallel with Spring 3 - Fixed Support. An intial displacement is applied to Mass 1. Solutions for mass displacement are obtained for different damping values.
Software Links
Open Modelica Software
Scilab and Xcos Software
Schematic of 3 Spring, 2 Mass, 1 Damper model from Open Modelica
Schematic of 3 Spring, 2 Mass, 1 Damper model from Scilab Xcos. k for all three springs = 1, M1 = M2 =1.
Open Modelica displacement history for D=1.0.
Xcos displacement history for D = 1.0.
Open Modelica mass displacement history with D = 0.
Xcos mass displacement history with D = 0.
Open Modelica mass displacement history with D = 3.
Xcos mass displacement history with D = 3.
Open Modelica mass displacement history with D = 0.1.
Xcos mass displacement history with D = 0.1.
Open Modelica mass displacement history with D = 0.5.
Open Modelica mass displacement history with D = 1, and k2 = 2.