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NOZZLE — FEM® – Analysis of stresses, flexibility and allowable loads of nozzle-shell junctions

The list of changes in various NOZZLE — FEM versions

The Version The List of Changes
  • The limiting temperature is introduced when corrosive medium is actived in accordance with GOST 34233.10-2017.
  • The calculation of allowable stresses for nozzle with pad was modified.
  • The critical error in the design model of conical reducer and head is fixed.
  • Flaws related to the materials database is fixed.
  • Flaws in the installation program associated with the installation of Microsoft Visual C++ 2015 Redistributable is fixed.
  • Edge artifacts on short fittings is fixed.
  • Flaws in creating a geometric model of an tee with equal run and branch parts is fixed.
  • The critical error in the stress extrapolation procedure on short fittings was fixed which caused the solution abort.
  • The text formatting in reports is corrected.
  • The incorrect output of allowable stresses for JB 4732-1995-EN is fixed.
  • Version 2.15 is installed only on 64-bit versions of Windows.
  • The finite-element solver was translated on a 64-bit architecture and this is allowed to escape from memory restrictions (1.5Gb) for 32-bit Windows versions.
  • The calculation method of allowable loads was corrected and refined.
  • The calculation method of stiffnesses and flexibily factors was corrected and refined.
  • The calculation method of stress intensification factors (SIF) was corrected and refined.
  • The procedure of stress extrapolation at the weld toe was added, which allows to more accurately estimate peak stresses, improve the convergence of stress values at different mesh quality levels.
  • For conical shell was added the possibility of specifying the end offset (as for eccentrical reducers).
  • Load of hydrostatic pressure load was add for cylindrical and conical shell.
  • Nozzle type radiobuttons was replaced by nozzle type combobox.
  • The new nozzle type "with weld-in toroidal insertion" was added.
  • The new nozzle type with beading was added
  • The new nozzle type with beading and with welded segment was added
  • The regeneration possibility of the result report was added.
  • The result report was changed for allowable loads, stiffnesses and stress intensification factors sections.
  • The postprocessor possibilities was extended for color setting of background, element edges and etc.
  • Fixed error that occurs when using materials of EN 13445-3 when calculating to EN 13445-3;
  • Fixed some typos in the GUI.
  • Restrictions was removed on the use of alloys from non-ferrous metals;
  • The database of materials was extended.
  • The calculating method of material characteristics was refined;
  • The output of allowable stresses in the source data for some ASME-materials was fixed.
  • Fixed the error for inserting a nozzle into elliptical bottoms for a private subtask.
  • The algorithm for generating a finite element grid on elliptical bottoms is optimized;
  • Fixed errors translating into Chinese language.
  • Postprocessor module (3D interactive model) was developed. It helps to visualize the results of calculation.
  • Materials database was filled by mechanical properties of materials from GB 150.2-2011 (China).
  • Added strength calculation under low-cyclic loads as per i.7 GOST R 52857.6-2007 «Improved calculation to low-cycle strength».
  • Corrected safety factor for austenitic chrome-nickel steels as per GOST R 52857.1-2007.
  • Strength calculation of V apparatus group working in corrosive hydrogen sulphide environment (GOST R 52857.10-2007).
  • Fixed flat head description in report.
  • Weld seam mesh was refined and elements along nozzle were overridden.
  • Materials database working faster.
  • “Delta” was removed for nontransition nozzles with pads.
  • Wall’s angle calculation for conical shell added to program interface.
  • Tilted nozzle’s location was corrected.
  • User template report’s path is saved on exit.
  • Nozzle location limit for bottoms/heads are expanded;
  • Calculation of conical transitions and heads clarified due to refined mesh;
  • Chinese language is allowable for working;
  • Added calculation of the stress intensification factors;
  • Added calculation of the flexibility factors.
  • Fixed encoding bug in the Html report.
  • Stiffness calculation in junction for all model configurations;
  • Strength estimation as per ASME VIII div.1;
  • Strength analysis of conical transition and heads working in corrosive hydrogen sulphide environment (GOST R 52857.10-2007);
  • Added criterion for ASME VIII div.1,2: “Protection against local failure” (σ1+σ2+σ3<=4[σ]);
  • Materials database was filled by mechanical properties of materials from tables 1A, 1B (ASME II Part D (Metric)).
  • Strength analysis of conical transition and heads;
  • Strength estimation as per JB 4732-1995;
  • Materials database was added by mechanical properties of materials from JB 4732-1995, GB 713-2008 and TU 14-3Ð-55-2001 Standards.
  • Strength estimation as per ASME VIII Div. 2 2010 and EN 13445-3:2002 E;
  • Analysis of barrel nozzles;
  • Stiffness estimation in junction place, as well as on the edge of nozzle;
  • Materials database was added by mechanical properties of main materials from EN Standards;
  • Materials database was added by “Maximum allowable stresses” (table 5(A, B)) from ASME Sect. II, Part D for estimation by Sect.VIII, Div.2.
  • Fixed bug of saving update settings;
  • Materials database was added by mechanical properties from PNAE G-7-002-86, OST 26-01-858-94, STO 00220227-006-2010, GOST R 54522-2011.
  • New FE-model for estimation of strength and stiffness of nozzles connections into the vertical steel tank’s walls, including nozzles with tombstone shape reinforcing plate;
  • Analysis of trunnion connections;
  • Implementation of a new material database, which includes both Russian and ASME material properties;
  • Automatic software version update system is introduced.
  • Added converter for making RTF reports, using one of default templates;
  • Head's straight flange mesh became a fine structure.
  • Straight flange and cylindrical shell was added to head model.
  • Added standards for strength estimation: GOST R 52857.1-2007 and GOST R 52857.10-2007 (corrosive hydrogen sulphide environment);
  • Reduced minimal limit distance from nozzle’s wall to shell’s edge;
  • Number and longitudinal length of shell’s elements are optimized;
  • Loads to tilted branch can be applying as in the main pipe coordinate system and in the branch;
  • Added the ability to configure the number of stress contours (from 3 to 30).
  • Program was expanded by english language interface with switching on fly;
  • Added models of radial and tilted branch connections. Loads applying points are on the main pipe and on the branch;
  • Tables are free from pictures, what is good usable for MS Office;
  • Reduced minimal limit distance from nozzle’s wall to shell’s edge;
  • Deformed model picture in auto scale added to the report.
  • Added nozzle calculation, including allowable loads and stiffnesses, for both global and local coordinate system;
  • Realized calculations of junctions of both horizontal and vertical shells.
  • Improved user interface and fixed bug with wrong nozzle location in the conical shell.
  • Fixed some minor bugs in dongle working.
  • The first commercial version of the program, which replaced program “Nozzle”.

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