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  1. hanxi

    Harmonic Analysis Dynamic Loads (Compressor Machine)

    Dear All: Good day. I have a study case where I want to investigate the response (displacement and velocity) of a Block Foundation with machine (compressor) installed on top of it. I'm aware that I'm going to perform Harmonic Analysis to achieve a graph of 1) displacement amplitude vs...
  2. hanxi

    STAAD Time History using Primary and Secondary Unbalance Load

    Good day to ALL: I would like to ask for advise on INPUT in Time History Analysis using STAAD. I have a vendor data which which states PRIMARY and SECONDARY unbalanced loads/couples for the given Compressor. I'm familiar with Time History Analysis for ROTATING MACHINES (which has 1 Unbalanced...
  3. hanxi

    ANSYS APDL Low Frequency Result in Modal Analysis

    Dear All: Good day. I've performed a Modal Analysis in ANSYS APDL simulating the Concrete Foundation Embedded in the ground (around 1.0 meter). I made my foundation model using Solid185 and used MASS21 for machine dead loads (these dead load + the selfweight will comprise my MASS for frequency...
  4. hanxi

    DIFFERENCE OF TRENCH AND DITCH

    Hi to all, good day... Im confused with the term "trench" and "ditch"... Ive tried to find its definitons but still im not in disarray... Is TRENCH and DITCH the same ? Thanks for any comment...
  5. hanxi

    DIFFERENCE OF CATCH BASIN AND SUMP

    Hi to all, goo day… Im confused with the term "catch basin" and "sump"… Ive tried to find its definitons but still im not in disarray… Is sump and catch basin the same or sump is a part of a catch basin? Thanks for any comment... Hanxi
  6. hanxi

    SIZING FOR VERY LARGE EQUIPMENTS

    I'm designing two (2) horizontal vessels that are to be installed on top on a structure. The loads are very large ( Vessel 1: empty=78ton, operating=497ton, test=512ton and Vessel 2: empty=48ton, operating=239ton, test=254ton) that made my supporting members (at fixed and sliding sides of...
  7. hanxi

    STAAD for INTERCONNECTING PIPERACK

    Sirs and Ladies, Imagine you have 2 piperacks structure perpendicular to each other... How are u going to consider the conditions of members Piperack 1 connecting to members Piperack 2? In this scenario, I will model these piperacks in different Staad files... Will I declare the members of...

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