Search found 2 matches

by usy
Fri Oct 02, 2020 4:42 am
Forum: OpenSees.exe Users
Topic: Damping cause divergence
Replies: 5
Views: 4225

Re: Damping cause divergence

Dear Gholamreza
You can find useful information on on damping matrix/Rayleigh in the following topic:
-Rayleigh damping problems by user mtsonicc (Wed Jan 20, 2016 3:44 am)
by usy
Mon Aug 24, 2020 1:20 pm
Forum: OpenSees.exe Users
Topic: Single friction bearing element
Replies: 1
Views: 2321

Re: Single friction bearing element

Hello, In its basic form, horizontal displacement-force relationship of single concave Friction Pendulum bearing can be formulated as follows: F(u)= (N/R)*u + (Mu*N)*sign(udot) where F: horizontal force, u: horizontal displacement, udot: velocity, N: axial load on the bearing, R: effective radius, M...