Accession Number : ADA338473

Title :   Structural Integrity Analysis and Verification of Aircraft Structures.

Descriptive Note : Final rept. Jul-Oct 95,

Corporate Author : ANALYTICAL SERVICES AND MATERIALS INC HAMPTON VA

Personal Author(s) : Krishnan, S. ; Boyd, K. L. ; Harter, J. A.

PDF Url : ADA338473

Report Date : MAR 1997

Pagination or Media Count : 52

Abstract : AFGROW is a workstation-based, graphically interactive computer program for simulation of fatigue crack growth in various structural geometries subject to spectral loading. It is a highly flexible code utilizing standard user-interface objects such as push-buttons and menus, to create a simple and intuitive environment for the fracture mechanics analyst. The program insulates the user from the complexities of data files and their formats by performing all file creation, retrieval an management tasks. AFGROW is a direct descendent of the computer code, MODGRO, with many changes and new capabilities completely rewritten in C computer language. AEGROW takes the best features of its predecessors and combines them with new ideas into a single, manageable code. Some of the more useful features of AFGROW include the ability to use a material database library for crack growth rate and mechanical property data, an option to approximate stress intensity factor solutions for arbitrary stress fields, and the ability to import stress spectra of virtually any size. This manual describes the features and capabilities of AFGROW and the use of the Graphical User Interface (GUl) to define problems and perform analyses. The various files used in AFGROW, their naming conventions and file formats are presented. The user-interface, with all menu options and dialogs, is included, as well as instructions on obtaining AFGRO via anonymous file transfer protocol (FTP). The tutorial describes the steps involved in setting up and analyzing an example problem.

Descriptors :   *COMPUTER PROGRAMS, *SIMULATION, *FATIGUE(MECHANICS), *GRAPHICAL USER INTERFACE, STRESSES, DATA BASES, MECHANICAL PROPERTIES, AIRCRAFT, VERIFICATION, STRUCTURAL PROPERTIES, MATERIALS, STRUCTURAL ANALYSIS, PROGRAMMING LANGUAGES, INTENSITY, RATES, CODING, RELIABILITY, SPECTRA, CRACK PROPAGATION, SOLUTIONS(GENERAL), FORMATS, AIRFRAMES, MAN COMPUTER INTERFACE, MENU.

Subject Categories : Computer Programming and Software

Distribution Statement : APPROVED FOR PUBLIC RELEASE