Solve Vibratory Roller Displacement & Phase Lag w/Free PDF

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Discussion Overview

The discussion revolves around determining the drum displacement (Xd), frame displacement (Xf), and phase lags (Teta f and Teta d) of a vibratory roller without an unbalanced vibratory mechanism. Participants seek guidance on initial conditions and appropriate software for modeling the system.

Discussion Character

  • Homework-related
  • Technical explanation
  • Exploratory

Main Points Raised

  • One participant provides a diagram and seeks assistance in calculating displacements and phase lags, asking where to start and what software to use.
  • Another participant suggests using SimMechanics as a simple modeling software but expresses confusion regarding the provided drawing.
  • A participant reiterates the need for clarity on initial conditions, noting that both Xd and Xf, along with their velocities, are zero, and questions how to incorporate these into the equations to find unknown variables.
  • Another suggestion is made to research "state space" as a potential approach to the problem.
  • One participant emphasizes the challenge of starting with initial conditions in the context of a Cauchy problem.

Areas of Agreement / Disagreement

Participants express varying levels of understanding of the problem, with some uncertainty regarding the initial conditions and the drawing. There is no consensus on the best approach or solution method, indicating multiple competing views.

Contextual Notes

Participants mention initial conditions and their implications but do not resolve how to apply them within the equations. The discussion includes references to specific software and modeling techniques without definitive conclusions.

reza_9216
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Attached Pdf is a free boday diagram of a vibratory roller without of balance vibratory mechanism. I need to determine the drum displacement (Xd), frame displacement (Xf) and the phase lags (Teta f and Teta d). where do i need to start from and what softwares can i use?
 

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Hi, I would like to help you, but I don't understand your drawing. However the most simple software to model it, is simechanics.
 
serbring said:
Hi, I would like to help you, but I don't understand your drawing. However the most simple software to model it, is simechanics.

the problem i have is how to start the initial conditions..i know that the Xd and Xf and their velocities are zero, then the question is how put these into the equations to find the unknown variables!
 
research something called "state space". That should help you a lot.
 
reza_9216 said:
the problem i have is how to start the initial conditions..i know that the Xd and Xf and their velocities are zero, then the question is how put these into the equations to find the unknown variables!

with a Couchy problem.
 

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