Physics
Scientific paper
Apr 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986akuo.rept.....r&link_type=abstract
Final Report Akron Univ., OH. Dept. of Civil Engineering.
Physics
Creep Buckling, High Temperature, Loads (Forces), Random Variables, Stress Relaxation, Viscoplasticity, Copper Alloys, Nozzle Inserts, Reusable Rocket Engines
Scientific paper
Structural alloys embody internal mechanisms that allow recovery of state with varying stress and elevated temperature, i.e., they can return to a softer state following periods of hardening. Such material behavior is known to strongly influence structural response under some important thermomechanical loadings, for example, that involving thermal ratchetting. The influence of dynamic and thermal recovery on the creep buckling of a column under variable loading is investigated. The column is taken as the idealized (Shanley) sandwich column. The constitutive model, unlike the commonly employed Norton creep model, incorporates a representation of both dynamic and thermal (state) recovery. The material parameters of the constitutive model are chosen to characterize Narloy Z, a representative copper alloy used in thrust nozzle liners of reusable rocket engines. Variable loading histories include rapid cyclic unloading/reloading sequences and intermittent reductions of load for extended periods of time; these are superimposed on a constant load. The calculated results show that state recovery significantly affects creep buckling under variable loading. Structural alloys embody internal mechanisms that allow recovery of state with varying stress and time.
Arnold Steven M.
Robinson D. N.
No associations
LandOfFree
Effects of state recovery on creep buckling under variable loading does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Effects of state recovery on creep buckling under variable loading, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Effects of state recovery on creep buckling under variable loading will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1101533