• 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…
  • Added mass for bouyancy in Dynamic Analysis

    Hi everyone, Could someone explain me how SACS consider bouyancy mass their dynamic analysis? In Dynpac tutorial (§2.3.1), it said "For structures immersed in fluid, the added or virtual mass and the mass of entrapped fluid ca nbe generated automatically…
  • SACS - Rotational Mass Participation Factor

    Dear Bentley, Do we have any ways to get the Mass Participation Factor for Rotational Degree of Freedom? The mass participation report shown in Dynlst is only reported for Translational Degree of Freedom only. Please help to suggest Regards …
  • P-delta effects in wave response analysis

    Hi, Does the SACS wave response module able to consider the pdelta effects (using PD commands) when generating Base shear transfer function AND also when generating the equivalent static load for accurate stress recovery.
  • Rhino Import to Maxsurf

    I have created this hull form comprised of NURB surfaces, and when I export it as a Maxsurf IGES file it appears in its entirety in Maxsurf. However, I can not add sections to it in the design grid and it will not calculate the hydrostatics. Without any…
  • 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
  • Vibration Analysis

    Hi, Currently im working on vibration analysis for a pump equipment support. Following is the step i did. Step 1, Modelling of beam supporting the pump with discrete joint where the interface bolt is attached to the structure. These interface…
  • Question is the method of Tow fatigue analysis.

    Is it possible to perform tow fatigue analysis with combination of RAO of topside motion and topside dynamics? I want to combine dynamic of structure(local part) with RAO of topside motion. I didn't look forward to combine RAO with dynamic data. In case…
  • How to import Craig-bampton super element in a dynamic SACS analyses ?

    I created a Craig-Bampton dynamic super element as per methodology described in "SACS Dynamic Superelement" document. I created a wave response file so as to have be able to create a reduced force vector. Spectral check is directly done in the listing…
  • Selection of Retained DOF nodes

    I have read through the Dynpac Manual Section 2.1 on Retained Degrees of Freedom. I understand that Dynpac uses a set of master (retained) degrees of freedom, selected by the user, to extract the Eigen values (periods) and Eigen vectors (mode shapes)…
  • Can someone help to explain the DAF analysis in SACS?

    Dear friends and bentley Colleagues I'm confused on the DAF calculation... We can use the DAF to get the dynamic response from the static analysis result, am i right? And I noticed that SNAME has a complicated procedure for DAF analysis. Surely…
  • Problem on mass modeling method in SACS for dynamic analysis

    Hi I'm running the dynamic analysis... However, I just found that some additional "mass" in the model were modeled as the "Load".. It's ok for static analsyis. But for dynamic analsyis, can we simply convert or define these "loads" as mass input?…
  • Dynpac module (to estimate natural period) & Gap elements with initial gap

    Can Dynpac module (to estimate natural period) capture the initial gap of say 50mm incorporated in the model.. any thoughts..? or is it only limited to the static runs. Thanks
  • How to generate a wave timeseries (Jonswap) in Sacs?

    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…
  • Selecting modes with mode number higher than 100 for steady state deterministic wave analysis

    Good day, I am trying to determine the steady state response of a large model loaded by waves and current. Due to the size of the structure and the number of dofs to be considered for dynamic analysis, the number of structural eigenmodes is far…