Ashish Khemka
Ansys Employee

Hi Randel,

Yes, you will need to apply the base acceleration in a transient MSUP analysis. The gravity load should be defined in modal analysis. Please see if the following link helps:

5.4. Performing a Mode-Superposition Transient Dynamic Analysis (

Also, there is an Ansys Innovation Course on MSUP Transient analysis which might be of use to you:

Mode Superposition Transient Analysis | Ansys Courses


To access Ansys online help please refer to the following link: How to access the ANSYS Online Help



Ashish Khemka