FEAP User Forum

FEAP => General questions => Topic started by: aadarsha on February 23, 2013, 01:22:21 AM

Title: transient problem
Post by: aadarsha on February 23, 2013, 01:22:21 AM

For a transient problem, how to apply loads at different time steps. Please send any examples if you have solved any transient problem so that I can go through the code

Title: Re: transient problem
Post by: Prof. R.L. Taylor on February 24, 2013, 04:32:59 PM

Which version of FEAP are you using?

Most versions support use of proportional loads.

1. Give value of a 'base' loading during mesh input.  Use: FORCe, EFORce, CFORce  or DISP, etc. options or CSURf for distributed loading

2. Assign loads to individual  proportional loads FPROp, CPROp type commands to assign each degree of freedom.
If only one load multiplier is used this is not required.

3. In command language define the time variation using PROPortional load commands.  Each dof gets multiplied by its proportional load value:  F(t) = p(t)*F  where F is the base value and p(t) the proportional loading.

Other commands exist.  See user manual for more details.

Title: Re: transient problem
Post by: aadarsha on March 25, 2013, 06:00:13 AM

Thank you sir


aadarsha