Search found 6 matches

by Matti
Wed Feb 27, 2019 8:49 am
Forum: OpenSees.exe Users
Topic: Converging pushover of a X-brace model
Replies: 0
Views: 1554

Converging pushover of a X-brace model

Hi everyone
I am modeling a 5 story X-brace system but its pushover analysis doesn't converge.
Can someone give me the required code?
I have attached the model here:
https://ufile.io/xegch
Thanks
by Matti
Mon May 21, 2018 7:07 am
Forum: OpenSees.exe Users
Topic: modeling diagonal CBF brace
Replies: 1
Views: 2510

modeling diagonal CBF brace

Hi everyone I am trying to model a one-story steel frame with diagonal CBF bracing. I want to simulate a hinge located in the middle of the brace, according to the multi-linear backbone curve introduced in the ASCE 41-13 with corresponding parameters stated in Table 9-7. How can I model this behavio...
by Matti
Thu Nov 16, 2017 11:52 pm
Forum: OpenSees.exe Users
Topic: Cyclic deterioration parameter (Lamda) for equivalent SDOF
Replies: 0
Views: 1590

Cyclic deterioration parameter (Lamda) for equivalent SDOF

Hi I want to model an equivalent SDOF with Bilin material. My original structure is steel frame. I want to consider the cyclic deterioration parameter (Lamda) for the SDOF model. Is there any relation or approximate value for this aim? For equivalent SDOF of concrete frames, Dolsek presented a appro...
by Matti
Mon Jun 19, 2017 4:38 am
Forum: OpenSees.exe Users
Topic: Suitable material for an infill compressive strut
Replies: 1
Views: 2141

Suitable material for an infill compressive strut

I want to model an Ibarra-Krawinkler hysteretic material for an infill compressive strut with these parameters: Fy_strut , delta_y_strut Fc_strut , delta_c_strut Fr_strut , delta_r_strut k_f_strut , k_d_strut (Pinching parameters corresponding to stress and strain) According to this picture: http://...
by Matti
Sat Jun 17, 2017 9:50 am
Forum: OpenSees.exe Users
Topic: Modeling of asymmetric hysteresis material
Replies: 6
Views: 5739

Re: Modeling of asymmetric hysteresis material

ashf wrote:
> I've gotten this error already,because the value of second strain should be
> bigger than first strain,third strain should be bigger than second strain.

Thank you for the solution :) . The problem was solved
by Matti
Fri Jun 16, 2017 3:03 am
Forum: OpenSees.exe Users
Topic: Modeling of asymmetric hysteresis material
Replies: 6
Views: 5739

Modeling of asymmetric hysteresis material

According to bellow picture, I want to model an Ibarra-Krawinkler hysteretic material for an infill compressive strut: http://uupload.ir/files/jqr8_strut_matrial.jpg When I used "uniaxialMaterial Hysteretic" material, this error apeared: "HystereticMaterial::HystereticMaterial -- input backbone is n...