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  • Warning during Spectral Fatigue Post Processing

    Hi all, I have these warning messages after performing the Spectral Fatigue Post Processing. I don't really understand why these warnings occur. Can anyone provide any advice on how to solve these warnings? Thanks Note, I am using SACS version …
  • TIME HISTORY FATIGUE ANALYSIS IN SACS

    Hi, I would like to perform time history fatigue analysis. Is there any sample or procedure on how to perform the analysis in SACS? in case yes, please feel free to send it to my email. ( ali_aidibi_94@hotmail.com ) Many thanks in advance. Best…
  • Fatigue analysis

    Hi I am working on fatigue analysis of jacket structures. As per the SACS doement as below "3.5.4 Using Stresses at the Chord Face By default, member hot spot stresses at the modeled end of the brace are used for fatigue calculations. For members…
  • Pile fatigue

    Hello I am doing pile fatigue check based on pil.csf file (obtained from PSI analysis). Pile is defined as concentric tubular section so that grout is done in between the tubular. in FTOPT line grouted memeber option is selected and in FTOPT2 ,colum…
  • scatter diagram for fatigue analysis

    I have scatter diagram with total number of occurrences 175320 waves. It is indicated a note that these records are " Hourly event number of occurrence - reference period: 20 years". My question, what does this note mean? should we multiply the scatter…
  • Offshore Learning Resources

    SACS SACS is an integrated finite element structural analysis package of applications that uniquely provides for the design of offshore structures, including oil and gas platforms, wind farms, and topsides of FPSOs and floating platforms. SACS software…
  • SACS Fatigue Analysis Error

    Hi Users, I am getting the following error when I run the spectral fatigue analysis file: SEASTATE FILE 1 HAS 60 LOAD CASES WHERE POSTFILE 1 HAS 1440 LOAD CASES Can anyone explain this error and what must have gone wrong?
  • Significance of mesh intensity and target plate length, and the relationship between the two variables

    Hi everyone, I would like to inquire what is the significance of mesh intensity in joint meshing. In the Utilities manual, section 3.2.3, the following highlighted statements are made (see screenshot below): Which lead to these questions: What…
  • SIG Virtual Workshop: Bentley Offshore - Deactivating the MOSES Connector During Analysis

    Title: SACS Spectral Wave Fatigue Date: Wednesday, October 14, 2020 at 10:00 am EDT Presenters: Geoff McDonald, Senior Application Engineer REGISTER NOW! This Bentley Offshore Special Interest Group virtual workshop focuses on Spectral Wave Fatigue…
  • SACS / spectral fatigue analysis

    hi all , while generating the seastates (dynamic transfer function) on a cantilever inside the water it was noticed that there is bulb at the early frequency. any ideas why this happens and thanks
  • Tow Fatigue with SACS

    Hi there. I need to perform Fatigue analysis for sea transportation in order to understand this calculation I started studying this guide "Tow Fatigue with SACS". I ran into a problem, if I understood correctly this formulas => have to calculate these…
  • RAO Spectral Fatigue warning [Total Life ratio = 2.00]

    Hi, When we run RAO spectral fatigue we have warning message like below. What is the cause and consequence of this warning? We didn't have this warning before when we had 16 headings (22.5 deg increment) in RAO and 16 wave scatters in ftginp. Scatters…
  • stress range and cycle counting

    Dear all I'm working on a spectral analysis for a leg member. An I extract the nominal stress range and cycle counting for a member, say, by using St-cyl-command ? the reason is that, the member has weld detail joints which can't be checked within…
  • Spectral Fatigue

    Hello everyone, Could you please clarify the significance of the resulting RMS value when we run the spectral fatigue analysis? RMS value = Sqrt(m0) or RMS = 2 Sqrt(m0) ??? Thanks!
  • Spectral Wind Fatigue

    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.
  • Fatigue, Is the SN Curves of DNVGL-RP-C203 are equivalent to NORSOK curves

    Dear all, Is the SN Curves of DNVGL-RP-C203 are equivalent to NORSOK curves listed below: Thanks and Regards, SWARUP Selvaraj.
  • Center of Damage Utility Version 11.2.0.15

    Dear all, I am trying to use Center of Damage Utility for calculate COD wave height and time period. In the fatigue input file, I could only input 11 wave heights in SCWAV card. Can anyone explain how to input more than 11 wave heights in wave scatter…
  • ERROR - 113 NOT A RECOGNIZABLE LOAD CASE

    Any body can help me to solve my fatigue running? I have check it many times, but I don't know what's wrong with my SACS file
  • Tow Fatigue with SACS

    Introduction A tow fatigue analysis may be performed in SACS by using the Tow and Fatigue programs. This post describes the methods used to generate a transfer function from the Tow program and the response spectrum and damage in the Fatigue program…
  • Request for SACS Wind turbine module example.

    I'm Mr.Gong who works at Zentech Engineering in Seoul, South Korea. We would like to do Fatigue and Strength Check using the SACS Wind turbine module from GH-Bladed results. While browsing the example, I found an example of the following link: https…
  • SACS - Strange SCF of Tubular Connection with Ring Stiffeners

    Dear Sir, I am curious about SCF calculation for tubular connection with ring stiffeners. It is mentioned that Smedley and Fisher (1991) formula is applied. The R-factor calculated by using the formula mentioned above looks ok. However, the final…
  • Effective thickness of Grouted Joint in Fatigue Analysis

    Dear Sir, I'm running a spectral fatigue analysis for a platform with grouted legs. These are my section input for my joint cans at leg SECT LEGCAN TUB 111.765.08091.4403.810 SECT LEGCAN1 TUB 111.765.50091.4403.810 SECT LEGCAN2 TUB 111.766.00091…
  • SACS Tech Talk: Fatigue Analysis of Offshore Structures

    Join Parvinder Jhita, Senior Product Manager, for a presentation on determining the cumulative fatigue effects on offshore structures with SACS. Key Points: Fatigue analysis capabilities in SACS Deterministic, spectral and time history fatigue…