tema software

Flexible Shell Elements
Engineering Software for the
Heat Exchanger Industry
Designed for Windows®.

TEMA® Flexible Shell Elements Product Overview

The new TEMA® Flexible Shell Elements product
consists of the following programs/modules:

Flanged and Flued Program

A TEMA® 9th and 10th Edition compliant tool for general, FEA (axisymmetric volume element-based) simulation and stress calculation of flanged and flued expansion joints. Calculated stress results are limited to specific stress classification lines (SCLs) that need to be defined by the end user.

Line Element Simulation for Flanged and Flued Expansion Joint Analysis

TEMA® 10th Edition permitted the use of axisymmetric line element models for evaluation of flanged and flued expansion joints. The line element provides a much faster calculation than the axisymmetric volume element and allows the engineer to iterate through calculations faster. Further, instead of being limited to stress calculations at specific stress classification lines (SCLs), the element allows full reporting at all nodes in the model. .

Principal Features

  • ASME Section VIII, Division 1 UHX load cases considered by default
  • Quick calculations
  • Suitable for cases when linear stress through the thickness
  • DLL available for 32-bit and 64-bit platforms on Windows and callable from Micosoft® Excel®
  • Stresses reported at critical locations in each component and at TEMA SCL locations
  • Integrated with Aspen Shell and Tube Mechanical™, Codeware Compress®, and Hexagon PV Elite®.
The SIF and Flexibility Calculator Program (based on ASME B31J)

The SIF and Flexibility Calculator Program, or the “ i & k “ Calculator, gives the user the ability very quickly calculate ALL of the flexibility factors and SIFs, as defined by the major industry Codes and Standards, based on just a few pieces of data for a simple run/branch pipe intersection. The user can quickly specify their run/branch pipe parameters, and then very quickly (visually) compare how the i & k factors differ from Standard to Standard, or Code to Code, for that specific geometry. This gives the user a quick visualization tool to categorize their factors (based on the Code or Standard that applies) as good, overly conservative, or non-conservative. This will allow the user to decide if the use of an alternate Code, more analysis, and/or documentation is advisable or justified.

The User Interface for the i & k calculator is shown below, and the reader can see that this provides a very through, and quickly reviewable set of results for the major Standards and Codes, with just a few pieces of input data.

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The program also provides additional utilities for calculating i &k factors for pipe bends, and SSIs. It also provides a thorough pipe stress evaluation tool for the defined intersection.
The ASME 07-10 Utility Program

This program is the programmatic solution to the ASME STLLC 07-10 project done by Paulin Research Group for the ASME. This project was done to provide more accurate (FEA-based) results for specific WRC-107 cylinder on cylinder connections with specific loading conditions. The user specifies a handful of values for the cylinder on cylinder connection, clicks on the calculate button, and gets a complete and much more accurate set of calculated stresses (by region) for the connection.

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Fatigue Calculator Program

The Fatigue calculator is a Code-based stress and fatigue calculation tool that allows the user to specify the applicable Code (calculation) method, code options, and material characteristics and states to quickly calculate the resultant code-based stresses and cycles to failure. The input screen and a sample set of output (for a specific Code/method selected) are shown below.

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PRG would like to emphasize that any TEMA® member or user of the TEMA® documents that find these programs of value in improving the accuracy of their expansion joints or nozzles on vessels will likely find a lot more value in a full license of NozzlePRO™, which is where many of these utility programs come from.

NozzlePRO™ allows for a much wider set of component types to be modeled (e.g. nozzles on heads, hillside nozzles, etc.), and it also allows for a much more through FEA analysis of these additional component types, including Fitness For Service (FFS) calculations, Non-linear stress calculations, and the analysis of standard components with custom reinforcement gussets or other customer structures added. If you are interested in what additional functionality NozzlePRO™ can provide.

Please visit the PRG website

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