Jump to content
SD90

Hypergraph HIC Calculation Problem

Recommended Posts

I have a problem with Hypergraph calculating the HIC curve/ value for an acceleration problem.

 

My steps were:

 

1) Import my simulation Data from LS-Dyna output files (acceleration (g) vs time (s)) (millimeter, second, tonne (LS Dyna output))

2) File -> Load -> Preference File -> Vehicle Safety Tools

3) Injury -> HIC -> HIC Curve

4) In the HIC Curve Menu I selected my imported curve, plot to new window

 

 What Hypergraph now does is simply take the g_max value as the "top" of the curve, and adjust the time limits according to the HIC criteria. As a HIC value I obtain 195.107, which in my opinion is far too less, considering i have between 20-50g for 30ms.

 

How does Hypergraph give out the correct HIC value? What details did I miss out?

 

Thank you in advance.

Share this post


Link to post
Share on other sites

After some recalculations I have found out that my HIC value is indeed correct. My only issue is the graphical representation of it.

 

Is it possible to plot the corresponding HIC value on the second y-axis in such a way that it is proportional to the g- scale on the left y- axis?

 

Share this post


Link to post
Share on other sites

Thank you for the quick responses. The method shown in the attached video ist exaclty the one that I have used. My problem is the graphical representation of the HIC "Curve" and the original acceleration curve. What I have is the HIC Curve leveling up to the maximum g- Value (the same as in your Video), however I want my diagram to look like this:

image.png.32ea16650ebe9d5ea0cb316f43a34d67.png

 

Thank you in advance.

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
You are posting as a guest. If you have an account, please sign in.
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


×
×
  • Create New...