Search found 26 matches

by rashid
09 Apr 2019, 07:10
Forum: 03-Unexpected behaviour/errors
Topic: Abnormal Velocity & Displacement Time Series
Replies: 1
Views: 3120

Abnormal Velocity & Displacement Time Series

Hi All, I'm using Seismosignal to get the displacement and velocity response of an acceleration time series from testing. However, the displacement and velocity responses do not seem right. Any suggestion what might be possibly wrong ? See the link for the snapshot of all the time series below. Than...
by rashid
08 Feb 2019, 05:13
Forum: 03-Analytical/modelling capabilities
Topic: takeda
Replies: 5
Views: 4543

Re: takeda

Hi Seismosoft team, Yes, I did see the help section. The explanation of Bo and B1 in the help section is the same as in the manual. By saying that it has an error, do you mean that there is an error in the formulation/coding of the takeda model (error in Bo and B1 parameters) in Seismostruct or just...
by rashid
05 Feb 2019, 11:04
Forum: 03-Analytical/modelling capabilities
Topic: High Stiffness Elastic Elements
Replies: 2
Views: 1540

Re: High Stiffness Elastic Elements

Hi Tim, Thanks for your suggestion. I'm wondering if a model with rigid offsets can be used with the lumped plasticity approach. A model with rigid offsets would include beams and columns with center-line dimensions and connected at one node at a joint. We can then account for the joint panel region...
by rashid
05 Feb 2019, 05:24
Forum: 03-Analytical/modelling capabilities
Topic: takeda
Replies: 5
Views: 4543

Re: takeda

Hi All, In Seismostruct, the two parameters for stiffness degradation in the Takeda model are outer and inner loop stiffness degradation (both for unloading stiffness ?). Standard literature, like the book Displacement-Based Seismic Design of Structures refers to controlling parameters of alpha and ...
by rashid
04 Feb 2019, 03:41
Forum: 03-Analytical/modelling capabilities
Topic: High Stiffness Elastic Elements
Replies: 2
Views: 1540

High Stiffness Elastic Elements

Hi All, I've modeled a lumped plasticity model of an RC frame. It is designed to capacity design principles and the joint flexibility can be ignored. My objective is to get the floor acceleration response histories and not a detailed assessment of the structure itself. Do you have any suggestions on...
by rashid
20 Jan 2019, 23:58
Forum: 02-Analytical capabilities
Topic: Floor Acc. Histories for Shake Table Testing
Replies: 2
Views: 6182

Re: Floor Acc. Histories for Shake Table Testing

Hi Tim, Thanks for the detailed response and guidance. The Rise-Hold-Decay is used to simulate the non-stationary nature of an earthquake event. The standard accepts a linear approximation of the envelope. I'll look into the differences that result from the three options in SeismoArtif. The artifici...
by rashid
18 Jan 2019, 03:22
Forum: 02-Analytical capabilities
Topic: Floor Acc. Histories for Shake Table Testing
Replies: 2
Views: 6182

Floor Acc. Histories for Shake Table Testing

Hi everyone, I want to generate artificial floor acceleration response histories for shake table testing of non-structural elements. My target response spectrum is from ICC- AC -156, which establishes acceptance criteria for seismic qualification testing of NSEs. 1. The ICC 156 requires a build, hol...
by rashid
15 Jan 2019, 03:39
Forum: 05-Referencing and license issues
Topic: Academic License Limitation
Replies: 3
Views: 6124

Re: Academic License Limitation

Hi Seismosoft team,

What are the current limitations of Seismosignal with an academic license?

Best regards,
Rashid
by rashid
28 Dec 2018, 11:58
Forum: 03-Analytical/modelling capabilities
Topic: Ibarra Curve vs. Pinched Asymmetric Curve
Replies: 5
Views: 5757

Re: Ibarra Curve vs. Pinched Asymmetric Curve

Hi Seismosoft team,

Is there any plan to release some verification examples for the Pinched Asymmetric Curve to demonstrate its capabilities for various pinched and degrading behaviors ?

Best regards,
Rashid
by rashid
14 Dec 2018, 08:57
Forum: 05-Future developments & requests
Topic: Self center damper behaviour
Replies: 3
Views: 1912

Re: Self center damper behaviour

Thank you Seismosoft team. This will be a great addition. When will the 2019 version be available ?

Go to advanced search