• Dynamic superelement

    Shimjith Manappatty
    Shimjith Manappatty
    Hello SACS community I am working on offshore wind turbine foundation analysis As a part of the project, I need to submit dynamic superelement data of the foundation to the turbine manufacturer. So I have gone through the dynamic superelement SACS…
    • 5 months ago
    • MAXSURF | MOSES | SACS | OpenWindPower
    • MAXSURF | MOSES | SACS | OpenWindPower Forum
  • Equivalent Statist Load Generation EQKLOD

    Hamid Heidary Torkamani
    Hamid Heidary Torkamani
    Hi, I am running a seismic analysis and am generating earthquake equivalent loads for pile foundation check. As per SACS-Dynamic Response manual, if we set “ Reversed Option ” on “ Both ”, SACS generates equivalent loads for 20 directions (every 18…
    • 7 months ago
    • MAXSURF | MOSES | SACS | OpenWindPower
    • MAXSURF | MOSES | SACS | OpenWindPower Forum
  • Seismic Complete Quadratic Combination Force Summations

    Geoff McDonald
    Geoff McDonald
    Introduction You may have seen that the Dynamic Response force summations don’t match the Combined force summations in a seismic analysis. In this post I will describe why that is and show you how to replicate this in your own analyses. If we look…
    • over 1 year ago
    • MAXSURF | MOSES | SACS | OpenWindPower
    • MAXSURF | MOSES | SACS | OpenWindPower - Wiki
  • Time History Analysis

    Kunal K
    Kunal K
    Greetings, As understand from the SACS Help manual, while running time history analysis, one can define 3 time history function in one file. I have few questions on this analysis as below, 1) How to decide the Directionality Factors? As per help…
    • over 2 years ago
    • MAXSURF | MOSES | SACS | OpenWindPower
    • MAXSURF | MOSES | SACS | OpenWindPower Forum
  • Can SACS be used for dynamic analysis of a centrifugal compressor located in a PAU.

    Hassan Yassaee
    Hassan Yassaee
    Can SACS be used for dynamic analysis of a centrifugal compressor located in a PAU. PAU been design using STAAD Pro? What module of SACS I need to use and are there any step I need to carry out the work. I have used SACS before but not for dynamic…
    • over 2 years ago
    • MAXSURF | MOSES | SACS | OpenWindPower
    • MAXSURF | MOSES | SACS | OpenWindPower Forum
  • Using SACS Dynamic Response for Machine Vibration Analysis

    Manh Hung Nguyen
    Manh Hung Nguyen
    Hi Sirs, I'm using SACS Dynamic Response for Machine Vibration Analysis (for two reciprocating pumps running simultaneously). There are two rotating parts on the pump which are motor and pump (cylinders+plungers). I have created a base frame of the pumps…
    • over 3 years ago
    • MAXSURF | MOSES | SACS | OpenWindPower
    • MAXSURF | MOSES | SACS | OpenWindPower Forum
  • Wind Spectral Analysis - Aerodynamic Admittance

    Kasiphon Kurojjanawong
    Kasiphon Kurojjanawong
    Dear Bentley Staffs, I am curious about the wind spectral analysis concept using in SACS. In general, we should have Aerodynamic Admittance which is taken into account effect of gust disturbance due to the size of structure. However, I did not see…
    • over 3 years ago
    • MAXSURF | MOSES | SACS | OpenWindPower
    • MAXSURF | MOSES | SACS | OpenWindPower Forum
  • SACS Extreme Wind Analysis - Spectral Response Combination

    Kasiphon Kurojjanawong
    Kasiphon Kurojjanawong
    Dear Bentley Staffs, I found something strange about the extreme wind analysis executed by SACS. Sample 12 provided an example of extreme wind analysis by using spectral approach and automatic combined the wind extreme value with static result. …
    • over 3 years ago
    • MAXSURF | MOSES | SACS | OpenWindPower
    • MAXSURF | MOSES | SACS | OpenWindPower Forum
  • Spectral Wind Fatigue

    Ahmad Hafiz
    Ahmad Hafiz
    Hai, I have run the analysis for Spectral wind fatigue. But there are error occur during analysis. This is my dynamic response input file Can someone help me on this.
    • over 4 years ago
    • MAXSURF | MOSES | SACS | OpenWindPower
    • MAXSURF | MOSES | SACS | OpenWindPower Forum
  • How to generate a wave timeseries (Jonswap) in Sacs?

    Wout Luites
    Wout Luites
    Dear All, Can somebody help me with creating and analysing a random wave signal from a JONSWAP spectrum in SACS. For this project a WTG foundation is to be designed. We would like to investigateif SACS is the software to be used for this. Preferably…
    • over 5 years ago
    • MAXSURF | MOSES | SACS | OpenWindPower
    • MAXSURF | MOSES | SACS | OpenWindPower Forum
  • RE: Fatigue Analysis Force-Time history

    Geoff McDonald
    Geoff McDonald
    Younghoon, I would recommend generating a postvue database from the dynamic response common solution file using the Post Processing - Generate Postvue Database analysis. Here is the workflow: Post Processing - Generate Postvue Database Input…
    • over 6 years ago
    • MAXSURF | MOSES | SACS | OpenWindPower
    • MAXSURF | MOSES | SACS | OpenWindPower Forum
  • Dynamic Analysis in SACS

    camille le berre
    camille le berre
    Hello, Is it possible to perform dynamic analysis in SACS by applying RAOs , seastate (wave period, wave height), drag coefficient with load cases on a structure connected to a ship and after the analysis to check the stress in the members of the structure…
    • over 6 years ago
    • MAXSURF | MOSES | SACS | OpenWindPower
    • MAXSURF | MOSES | SACS | OpenWindPower Forum
  • RE: dropped object analysis in SACS

    Geoff McDonald
    Geoff McDonald
    From Section 1.3.3 of the Dynamic Response manual: The Dynamic Response module can predict the response of structure resulting from an impact from a vessel or a dropped object. The process can also account for fluid damping for a submerged portion…
    • over 6 years ago
    • MAXSURF | MOSES | SACS | OpenWindPower
    • MAXSURF | MOSES | SACS | OpenWindPower Forum
  • RE: Wind Spectra

    Geoff McDonald
    Geoff McDonald
    Hoan, There isn't an easy answer to that question since the answer depends upon your analysis. The wind speeds you define in your wind data are used to calculate the fatigue damage based upon the distribution you have input in the dynamic response input…
    • over 6 years ago
    • MAXSURF | MOSES | SACS | OpenWindPower
    • MAXSURF | MOSES | SACS | OpenWindPower Forum
  • RE: Wind Spectra

    Geoff McDonald
    Geoff McDonald
    Kasiphon, I don't believe that any standard deviation of the wind velocity is used in our calculations. We use a weibull distribution for the wind spectra and the user inputs the k and a parameters to determine the shape and magnitude of the distribution…
    • over 6 years ago
    • MAXSURF | MOSES | SACS | OpenWindPower
    • MAXSURF | MOSES | SACS | OpenWindPower Forum
  • RE: Wind Spectra

    Geoff McDonald
    Geoff McDonald
    HoanW., The Harris Spectra that you refer to is actually referred to as the Von Karman spectrum in SACS. When SACS is referring to the Harris spectrum it is the Davenport version of the Spectrum referenced in 3.4 of the Dynamic Response manual. …
    • over 6 years ago
    • MAXSURF | MOSES | SACS | OpenWindPower
    • MAXSURF | MOSES | SACS | OpenWindPower Forum
  • RE: spectral analysis with dynamic response module

    Geoff McDonald
    Geoff McDonald
    SACS uses SRSS to combine modal responses to spectral loading. Refer to Section 3.1.3 of the Dynamic Response manual for more information.
    • over 7 years ago
    • MAXSURF | MOSES | SACS | OpenWindPower
    • MAXSURF | MOSES | SACS | OpenWindPower Forum
  • SACS Motion Analysis for Tow

    Sid
    Sid
    Hello! I am analyzing a Jack Up Rig with a single column for wet tow. During wet tow, the jack-up will be floating on its hull and the column will be above water. The procedure I have adopted is as follows: 1. Perform a wave dynamic analysis in SACS…
    • Answered
    • over 7 years ago
    • MAXSURF | MOSES | SACS | OpenWindPower
    • MAXSURF | MOSES | SACS | OpenWindPower Forum