Search found 5 matches

by suuzie
Mon Apr 05, 2021 5:11 am
Forum: OpenSees.exe Users
Topic: Tangent Stiffness Proportional Damping on Updated Frequencies
Replies: 1
Views: 331

Tangent Stiffness Proportional Damping on Updated Frequencies

Dear Sir/Madam: I would like to know how to write in .tcl file tangent stiffness proportional damping on updated frequencies? This tangent stiffness proportional damping on updated frequencies is discussed in references such as: Finley A. Charney, "Unintended Consequences of Modeling Damping in Stru...
by suuzie
Thu Apr 26, 2018 1:22 pm
Forum: OpenSees.exe Users
Topic: Different Time Step at each Step
Replies: 1
Views: 339

Different Time Step at each Step

Hello,

I want to know how I can use timeSeries when I have different time step for each step (corresponding to each data in displacement history).
For example, can I write time step in a file like displacement history and then use it?? How can I do that?

Thanks!
by suuzie
Sat Apr 07, 2018 2:11 pm
Forum: OpenSees.exe Users
Topic: Problem in Example for "ZeroLengthImpact3D"
Replies: 2
Views: 553

Problem in Example for "ZeroLengthImpact3D"

Hello,

I found that the example for "ZeroLengthImpact3D" element generates zero-reaction, which is different from the output provided by the author of this element.
It seems this element is corrupted, or hasn't been adjusted to the latest version of OpenSees (v2.5.0).
by suuzie
Fri Feb 16, 2018 2:35 pm
Forum: OpenSees.exe Users
Topic: Error Message !!EXPLANATION NEEDED!!
Replies: 1
Views: 394

Error Message !!EXPLANATION NEEDED!!

Hello, I got a following error message when I run analysis that place static loading on my structure: WARNING BandGenLinSOE::BandGenLinSOE : ran out of memory for A (size,super,sub) (22533, 22514, 22514) StaticAnalysis::handle() - LinearSOE::setSize() failedStaticAnalysis::analyze() - domainChanged ...
by suuzie
Tue Jun 13, 2017 3:55 pm
Forum: OpenSees.exe Users
Topic: Record Modal Properties
Replies: 1
Views: 716

Record Modal Properties

Hi, I wonder if we can record modal properties (modal displacement or modal period) per each time step. For example, the bridges with nonlinear materials have different period when the structure enters inelastic response under strong earthquake motion. If this is possible, how can we write the recor...