Preface

This document describes the use of a suite of subroutines (The FEMGEN User Routines) which enable Finite Element Analysis data to be extracted from a FEMGEN database.

This document is aimed at programmers wishing to write an interface program which interrogates a FEMGEN database and creates a file suitable for input to a Finite Element Analysis program. It is assumed that the reader has knowledge of FEMGV and has access to both the program and associated User Manuals. The software described in this manual is compatible only with versions 4 and above of FEMGV.

Interface programs may be developed as separate executables, or linked in with the FEMGV main program and accessed directly. When linking the interface with the main program, it is possible to define an analysis-dependent environment in which the FEMGEN user is prompted for mesh, load, material, and physical property data in an analysis dependent way.

This version of the FEMGEN User Routines is incompatible with the earlier version of the routines (Version 1.4X). An interface developer wishing to use these routines in association with an existing interface will need to update the program. Appendix C of this document details the changes which will be necessary. The changes to the FEMGEN User Routines between FEMGV versions 4 and 5 are described in Appendix B.

Date	Comments	FEMGV	FEMGEN
			User Routines
Aug. 1999	New routine UANTYP to enquire the analysis type.	6.1	3.2
	Example of new 'userAN' routine to define the list of
	analysis types.
	A longer model title can be retrieved with UTITL2.
	Routines UFACEG, ULOAD3, ULOADE and UICOND are
	replaced by equivalent routines that can handle edge
	loads.
	Routine UPHYS4 replaces UPHYS3 and supports beam
	orientation given by a point.
	New routine UEFACE to retrieve the loaded face of an
	element.
Aug. 1998	New element types (higher order and interface) were	5.2	3.1
	added; Shape names were included in UNAMG2; and
	USHPE2 description was updated to include some new
	shape types.
Nov. 1997	Two new analysis environments (DYNAFLOW and	5.0	3.002
	EVOLVER) available.
	Information on Property Material and Property
	Physical forms.
Oct. 1997	Electrical potential is now mapped to degree	5.0	3.001
	of freedom 10.
July 1997	Added 3 FEMGEN User Routines for processing	5.0	3.0
	moving loads.