Simplified analytical procedures for representing material cyclic responseRequirements for increased durability of gas turbine hot section structural components have made it necessary to place greater emphasis on accurate structural analysis and life prediction. Linear finite-element analysis is generally sufficient for structural analysis applications. However, for structures in the hot part of the engine, nonlinear structural analysis may be required under certain conditions for the accurate prediction of the local stress-strain response. Nonlinear finite element analysis represents a costly effort which is generally incompatible with the iterative nature of the design process. The present investigation is, therefore, concerned with two simplified procedures for estimating the local hysteretic response produced by cyclic thermal loading. These procedures reduce the need for nonlinear finite-element analysis.
Document ID
19840040090
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Moreno, V. (United Technologies Corp. Pratt and Whitney Group, East Hartford, CT, United States)
Kaufman, A. (NASA Lewis Research Center Cleveland, OH, United States)