Very big rigid acceleration in z-axis

[ece7048]

Hello everyone,

I have an issue with the rigid aceeleration in z axis. In my analysis a set a compresion load in z-axis which reach the 1000N after 8 timesteps. The geometry is a femur-tibia bone with acl,pcl,lcl,mc ligaments and
meniscus later medial. In the forth time step where it has reach the 300N the rigid acceleration in z axis is too big, it reach the 3000m/s^2. That make no sence. Could anyone tell me if his know, how can find where the problem is?

Best,
Michail

[ateshian]

Hi Michail,

It is difficult to diagnose this issue without an example file. Would you please upload this example?

Best,

Gerard