Design, Analysis and Processing of Functionally Graded Structural Materials
Abstract
A multi-length scale computational methodology is developed to analyze processing/microstructure and microstructure/properties/performance relationship in advanced structural materials. Such methodology is based on combining scientific and engineering disciplines of fluid mechanics, heat transfer, chemical gas/surface thermodynamics and kinetics, atomistic modeling techniques, stochastic microstructure evolution simulation methods, nonlinear fracture and singular stress analysis, and micro-mechanics analytical and computational approaches. This methodology is then applied to advanced coating and functionally graded materials processed by the chemical vapor deposition (CVD) and the Laser Engineered Net Shaping (LENS(Trademark) processes. The methodology allows the establishment of direct links between process parameters (temperature, pressure, flow rates, laser rastering velocity, etc.), the resulting materials microstructure (grain size and distribution, morphological and crystallographic texture, etc.) and properties (strength, strain-to-fracture, etc.). in response to the computational challenges of multi-length scale modeling, parallel computing is utilized and a highly-efficient inter-processor communications method is developed which substantially reduces the simulation time.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 18, 2000
- Accession Number
- ADA386131
Entities
People
- J. Goree
- Mica Grujicic
- P. F. Joseph
- R. J. Diefendorf
Organizations
- Clemson University