infrmFB integration point - weight

[anita.a]

Hi
I'm trying to model a flexural wall (using the distributed force based element) which is displaying a softening response and therefore the response is not objective and dependent on the number of integration points.

Is it possible to change the weight of the integration points, especially the integration points at the end of the member?
I try the following but it has no effect on the response that is obtained from a pushover analysis: Settings --> Element subdivision --> change the percentage of length for the element subdivisions.

Also, with the above approach, is the "percentage of the length of the end element" equivalent to the weight of the end integration point or does it define the position of the second integration point?

Any assistance or guidance would be much appreciated.
Thank you

[seismosoft]

Unfortunately, it is not possible to change the location and the weight of the integration sections. However you could use the element subdivision facility to subdivide your members to smaller elements, the legth of which you can control. For smaller elements (e.g. 4-5 per member) the infrmDB element type is more suitable.
Finally, no the percentage of the length of the end element is irrelevant to the integration sections weights.
Seismosoft Support

[anita.a]

Thank you very much for your response.
Is it possible to know what is the integration type that has been used or what the default weights are for the different number of integration points/sections? I've tried to look at the manual but was unable to find this.

Many Thanks
Anita

[seismosoft]

They are mentioned in the Material Inelasticty section of the program's manual and help.
Seismosoft Support

[anita.a]

Thank you very much, really appreciate the help.