User's Manual for the Laminated Composite Inelastic SOLver Computer Program

LISOL is a computer program developed at the Air Force Institute of Technology to model the nonlinear behavior of metal matrix composite laminates. It uses a micromechanics approach to develop a set of constitutive relations which are automatically assembled for a specified layup. It uses the unified viscoplastic theory of Bodner and Partom to model the matrix material and assumes the fiber is thermoelastic. Temperature dependent material properties may be input for both the fiber and matrix. An interfacial failure scheme based on a statistical approach is employed to model the progressive failure of the fiber/matrix interface. Property files for the SCS6/Ti-15-3 and SCS6/Ti-beta21s (sometimes referred to as TIMETAL21s) systems are currently available. The program was designed with thermomechanical fatigue (TMF) cyclic loading in mind and to be run interactively. Therefore, it is menu driven so that the user can modify the load sequence and output from within the program. Also, symmetric layups are assumed which enhances the speed of the program, so only the ply angles required to characterize the composite need be entered and not the entire layup.Air Force Inst of Tech Wright-Patterson AFB OH is the author of 'User's Manual for the Laminated Composite Inelastic SOLver Computer Program', published 1996 under ISBN 9781423575870 and ISBN 1423575873.