Problem with 4 poster, ride simulation

Hi,

Can you please share the log file.

please check the attachments, etc... 

Thank you so much, i've just solved that problem. I've remade the all model and now it works. Now i've another question, i've a points defined function which i want to insert as a jack input. How can i do?

i've a points defined function which i want to insert as a jack input. How can i do?

HI,

What is the use of this function in your model?

Hi,

i need to simulate an exponential sweep as shown in the figure. in order to determine the eigenfrequencies of the car. Especially i want to make a model that could be represent my university's 4 posterrig. I saw that the Kinematics and compliance model use the force to determine the movement of the jack. Could i impose the vertical displacement of the jack with that function?

Thank you so much and have a nice day,

Carlo.

Yes,  You can either create an expression or use a curve and impose the same on the translational joint which enforces jack movement. 

Ok thank you Prakash. I've already create the curve but when i insert the reference of the curve in the jack actuation - force the system want to insert a indipendent variable that i don't know how is it.

<?xml version="1.0" encoding="UTF-8"?>

  <?xml version="1.0" encoding="UTF-8"?>

Ok thank you Prakash. I've already create the curve but when i insert the reference of the curve in the jack actuation - force the system want to insert a indipendent variable that i don't know how is it.

<?xml version="1.0" encoding="UTF-8"?>

  <?xml version="1.0" encoding="UTF-8"?>

Sorry Prakash, how can i fixed my problem with that graph?

HI,

Sorry for a late reply.

What is the Y-axis variable in your curve?

Usually Independent variable is your X-axis variable. If your X-axis is TIME, then your Independent variable is TIME. 

no problem! Yes, time is on the x-axis. Need i create another variable called time? if yes, how i have to proceed?

Thank you

HI,

Not required.