FORMAT : Fortran matrix abstraction technique.

Abstract

The FORMAT System has been augmented with highly efficient and reliable procedures for structural analysis via an alternate solution approach which combines the rigorous generation features of the existing force method with a few new equation solving process characteristic of the current displacement methods. As a result, a tenfold increase in potential problem size to in excess of 10000 elastic degrees of freedom is the minimum currently anticipated as attainable on present major digital computers, and the linear behavioral characteristics can take immediate advantage of any advance in hardware capabilities. In making these provisions considerable emphasis was placed on the control of both physical and numerical error throughout the total solution process. To actual aerospace structures with up to 6500 degrees of freedom have been successfully processed as single entities on a production basis, that is, within the confines of a production schedule with maximum reliability at minimum cost.Research supported by the Air Force Flight Dynamics Laboratory, Air Force Systems Command, United States Air Force, and performed by the Douglas Aircraft Company."April 1973."Includes bibliographical references (pages 131-132).The FORMAT System has been augmented with highly efficient and reliable procedures for structural analysis via an alternate solution approach which combines the rigorous generation features of the existing force method with a few new equation solving process characteristic of the current displacement methods. As a result, a tenfold increase in potential problem size to in excess of 10000 elastic degrees of freedom is the minimum currently anticipated as attainable on present major digital computers, and the linear behavioral characteristics can take immediate advantage of any advance in hardware capabilities. In making these provisions considerable emphasis was placed on the control of both physical and numerical error throughout the total solution process. To actual aerospace structures with up to 6500 degrees of freedom have been successfully processed as single entities on a production basis, that is, within the confines of a production schedule with maximum reliability at minimum cost.Air Force Contract No.Mode of access: Internet