Maintenance and improvement of FBR inelastic structural analysis system "FINAS" (III)

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A general purpose finite element nonlinear analysis system FINAS has been development since July 1976 for structural design of fast breeder reactor (FBR) components.Maintenance and improvement for this system are continued since July 1981. The objective of this report is to show the results of maintenance and improvement which were carried out during July 1983 to Jun 1984. FINAS is equipped with basic capabilities of a general purpose program as the results of the initial five years development. However enchancement and improvement of this system are under going to cover more widely class problems. In this year, dynamic files allocation for a large scale problem, non axi-symmetric analysis and heat transfer analysis are mainly improved in consideration of computational efficiency. Then FINAS is newly installed in Japan Atomic Energy Research Institute in August 1983. The first part of this report is the result of maintenances and improvements obtained in this year. In second part, the theory of structual analysis and numerical method employed m FINAS are described. Finally, numerical examples which are the verification and application to realistic problems are illustrated.