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Cares/life ceramics analysis and reliability evaluation of structures life prediction program
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Gyekenyesi, John P. Nemeth, Noel N. Janosik, Lesley A. Powers, Lynn M. |
| Copyright Year | 2003 |
| Description | This manual describes the Ceramics Analysis and Reliability Evaluation of Structures Life Prediction (CARES/LIFE) computer program. The program calculates the time-dependent reliability of monolithic ceramic components subjected to thermomechanical and/or proof test loading. CARES/LIFE is an extension of the CARES (Ceramic Analysis and Reliability Evaluation of Structures) computer program. The program uses results from MSC/NASTRAN, ABAQUS, and ANSYS finite element analysis programs to evaluate component reliability due to inherent surface and/or volume type flaws. CARES/LIFE accounts for the phenomenon of subcritical crack growth (SCG) by utilizing the power law, Paris law, or Walker law. The two-parameter Weibull cumulative distribution function is used to characterize the variation in component strength. The effects of multiaxial stresses are modeled by using either the principle of independent action (PIA), the Weibull normal stress averaging method (NSA), or the Batdorf theory. Inert strength and fatigue parameters are estimated from rupture strength data of naturally flawed specimens loaded in static, dynamic, or cyclic fatigue. The probabilistic time-dependent theories used in CARES/LIFE, along with the input and output for CARES/LIFE, are described. Example problems to demonstrate various features of the program are also included. |
| File Size | 10726112 |
| Page Count | 342 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20030014949 |
| Archival Resource Key | ark:/13960/t51g5nj7m |
| Language | English |
| Publisher Date | 2003-02-01 |
| Access Restriction | Open |
| Subject Keyword | Structural Mechanics Surface Defects Life Durability Computer Systems Performance Performance Prediction Ceramics Crack Propagation Finite Element Method Thermodynamics Time Dependence Fractures Materials Fatigue Materials Reliability Analysis Prediction Analysis Techniques Weibull Density Functions Structural Analysis Distribution Functions Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
