Generate random road from PSD

I'm trying to generate a random road which will be used as input for a Quarter-car model.

I used the procedure described in this article http://link.springer.com/article/10.1007%2Fs12544-013-0127-8/fulltext.html .

In Figure 2, generated roads are plotted with a maximum elevation of 15 mm for A-B category and 100 mm for D-E. My problem is that I get much higher amplitudes from those reported by them. I attached the code that I'm currently using. I'm not sure what I'm doing wrong, any guidance would be appreciated.

Length of road = 250 meters

Spatial frequency band = 0.004 -> 4

Here are some formula used to generate road.

[Bob]

I wanted to ask you if you know how to get the dynamic load diagrams.

[Juan Luis Chacon]

hi... are you still interested on this question?

[Bob]

Dear Juan Luis Chacon,

Although it's been a long time, yes I'm still interested.

I have generated random road profiles, for car, through the equation (9).

After all, I didn't manage to get the Dynamic Load Diagram (Fig. 5).

However, I tried to calculate it through the displacement of unsprung mass minus the amplitude of the road but I didn't get the same result with the paper.

Last but not least, the most important for me, the last Diagram (Fig.6) which somehow I have to figure out how to get it through the equation (12)

[Maltesh Kammar]

Hello,

Is it possible to share your MATLAB code as I'm working on creating road profile for Motorcycle?

Email ID: [e-mail]

Thank you in advance

[Tk Tarik]

Hey.I am working on half car model to predict the dynamic load imposed by the tiers on the road.I have generated the road profile but I don't know how to make it an input for the half car model I had built. [e-mail]

[Teron Nguyen]

Hi, I am also investigating this problem, could you please share me the MATLAB code to generate artificial road profiles? Email: [e-mail] Thank you.

[Janani L]

Could you please send this code. I am a research scholar. My topic is related to road roughness [e-mail]

[Jan]

This is a strange thread: 4 persons posted their email address, which this unusual in a public forum. One has posted a new question in the section for answers, which I have removed.

[Prakriti]

Did you solve the issue?