Monday, January 13, 2020

Mass-spring-damper

Mass-Spring-Damper Simulation

Introduction 


The mass-spring-damper problem is the simplest problem used in analysis of linear vibration. This example shows how to use the "classic" interface in MOMDYN to define the kinematics of the oscillator, and simulate its free vibration response.


Procedure

Using the classic interface, you will specify system constants (mass, stiffness, damping, and equilibrium length of the spring), a single generalized coordinate (vertical position), and use these to create a vector from the origin to the mass, a point, a particle, and the spring-damper. At completion, you will simulate the oscillating mass and visualize it's dynamics


Saturday, January 11, 2020

Simple Pendulum

Introduction

The single-degree-of-freedom pendulum problem is likely the most common problem used to teach principles of mechanical engineering dynamics. This example shows how to use the "classic" interface in MOMDYN to define the kinematics of the pendulum problem, and simulate its response to a specified initial angle and angular velocity condition.