with initial state analysis wrapper

[shuaicai]

When the underground structure was after gravity analyses, it is necessary to reset the deformations to zero with "initial state analysis wrapper".

So my question is : how to use this comoand, can you give me a simple example? Thank you! Chengxuelei.

- turn off the frictional interfaces
- perform the gravity analysis
- reset the deformations to zero (with initial state analysis wrapper)
- turn on frictional interfaces
- let the structure with its weight (or force) move relative to soil to develop the proper skin resistance

Now you can go for dynamic analyses.

[skamalzare]

There is an example with Initial State Analysis Wrapper under "Excavation Supported by Cantilevered Sheet Pile Wall" in Wiki.

http://opensees.berkeley.edu/wiki/index ... _Pile_Wall

Bests,
Soheil