Search found 156 matches

by ruipinho
17 Jan 2019, 00:10
Forum: 03-Analytical/modelling capabilities
Topic: Post Tension Rocking Wall
Replies: 1
Views: 403

Re: Post Tension Rocking Wall

Hi Kirkaguel, There are many ways in which post-tensioned rocking walls may be modelled in Finite Element programs, either using nonlinear spring/link elements alone or through a combination of nonlinear frame/shell elements plus nonlinear springs/links. As an example, I can point you to Chapter 2 o...
by ruipinho
06 Jan 2019, 16:10
Forum: 03-Analytical/modelling capabilities
Topic: Damping Recommendation from ATC 72
Replies: 5
Views: 638

Re: Damping Recommendation from ATC 72

Kirkaguel, Just a quick note to support the (always wise) comments of huffte; there is no such thing as A correct or superior equivalent viscous damping model option. Indeed, if you do a thorough literature review on the subject, you will quickly realise that over the past 20 years many different pr...
by ruipinho
20 Dec 2015, 20:24
Forum: 02-Getting started with the modelling
Topic: How to model waffle slabs.
Replies: 2
Views: 2210

Re: How to model waffle slabs.

Peit, This response probably comes too late, but let me in any case suggest the work of A. Benavent on modelling of waffle slabs in seismic regions (including comparisons with experimental tests). You may find his papers by e.g. carring out a search in Google Scholar (using "Benavent waffle slabs" a...
by ruipinho
12 Nov 2015, 06:29
Forum: 03-Analytical/modelling capabilities
Topic: shear performance criteria
Replies: 3
Views: 1861

Re: shear performance criteria

Thaer,

Complementing the response of Seismosoft's Support Team, I note that if you carry out a search on "shear fibre" you will find other relevant discussions on this topic, such as e.g. http://www.seismosoft.com/forum/viewtop ... 902&p=4583 .

Best,

Rui
by ruipinho
12 Nov 2015, 06:19
Forum: 03-Analytical/modelling capabilities
Topic: SMA wires in LRB
Replies: 3
Views: 1445

Re: SMA wires in LRB

Yes, correct, and that is exactly the reason why others have used phenomenological models (i.e. hysteretic response curves being) to try to model such situations.

Best,

Rui
by ruipinho
04 Nov 2015, 13:59
Forum: 03-Analytical/modelling capabilities
Topic: Fracture point in curve type of a link element
Replies: 1
Views: 1126

Re: Fracture point in curve type of a link element

sarian, hi. You touch a valid point, since Performance Criteria cannot currently be set up for link elements (if such facility were available, then it would be straightforward to do what you require). In view of the above, I wonder if "playing" with the 'gap_hk' response curve could be of help? It m...
by ruipinho
04 Nov 2015, 13:46
Forum: 03-Analytical/modelling capabilities
Topic: SMA wires in LRB
Replies: 3
Views: 1445

Re: SMA wires in LRB

ali_hssn,

In a past Forum discussion (I searched the word "alloy") there seems to be a suggestion for using a Takeda model, but I guess that trying different options (considering also proposals in the literature) is the best option.

Best,

Rui
by ruipinho
04 Nov 2015, 13:35
Forum: 03-Analytical/modelling capabilities
Topic: How to model steel bracings with SMA in the end zones?
Replies: 1
Views: 1248

Re: How to model steel bracings with SMA in the end zones?

hitesh4894, hi. I carried out a search (in this Forum and on the web in general) on the word "alloy", and readily found a number of suggestions/proposals on how to proceed with the modelling you mention, the most recurrent of which involved the introduction of adequately calibrated springs at the en...
by ruipinho
04 Nov 2015, 13:10
Forum: 02-Getting started with the modelling
Topic: Questions about Ch4-infill-04
Replies: 1
Views: 1222

Re: Questions about Ch4-infill-04

Summer, hi. The model you refer to was not developed by Seismosoft itself, but rather by the researchers that authored the publication cited in the Chapter in question: - Smyrou E., Blandon C., Antoniou S., Pinho R., Crisafulli F. (2011) “Implementation and verification of a masonry panel model for ...
by ruipinho
04 Nov 2015, 12:56
Forum: 02-Getting started with the modelling
Topic: X-Braced frame Modeling
Replies: 4
Views: 2150

Re: X-Braced frame Modeling

Behnam, As I know you know already, there is no simple answer to your query, and there may be many reasons behind the differences that you are observing, and it really needs to be you exploring it all further. As usual, I would also suggest you to carry out a Forum search on the word "experiment", t...