Limit Fire Analysis of 3D Framed Structures Based on Time-Dependent Yield Surfaces

2020 ◽  
pp. 63-82
Author(s):  
Domenico Magisano ◽  
Francesco Liguori ◽  
Leonardo Leonetti ◽  
Giovanni Garcea
Keyword(s):  
Time Dependent ◽  
Framed Structures ◽  
Yield Surfaces

Time Dependence in Biaxial Yield of Type 316 Stainless Steel at Room Temperature

1983 ◽  
Vol 105 (4) ◽  
pp. 250-256 ◽  
Author(s):  
J. R. Ellis ◽  
D. N. Robinson ◽  
C. E. Pugh
Keyword(s):  
Stainless Steel ◽  
Room Temperature ◽  
Transient Flow ◽  
Time Dependent ◽  
Time Data ◽  
Yield Behavior ◽  
316 Stainless Steel ◽  
Hardening Behavior ◽  
Initial Yield ◽  
Yield Surfaces

This paper describes two biaxial experiments which investigated time and rate effects in the yield and deformation behavior of type 316 stainless steel at room temperature. The first experiment was aimed at determining the effect of probing rate on small-offset yield behavior. The primary aim of the second experiment was to investigate time-dependent flow after loading beyond initial yield. An additional aim was to investigate the effect of radial (3 σ12 = σ11) and nonradial preloads on the yield and hardening behavior. The first experiment showed that for the limited range investigated, 100 to 500 με/min, the probing rate had little effect on yield behavior. The small differences observed in the size and position of certain yield surfaces were shown to be related to the sequence in which the yield loci were determined. The second experiment showed that yield surfaces suffered considerable distortion from their initial near-circular form after both radial and nonradial preloads beyond initial yield. It also showed that the hardening behavior was predominantly kinematic for both types of preload. The strain-time data obtained after the preloads in this experiment showed characteristics typical of creep curves. A transient flow period was observed with high initial strain rates diminishing one or two orders of magnitude during the 0.5-h hold periods. This means that in detailed mechanical modeling of this material, careful attention should be given to time-dependent effects, even at room temperature.

A quasi-static nonlinear analysis for assessing the fire resistance of reinforced concrete 3D frames exploiting time-dependent yield surfaces

2019 ◽  
Vol 212 ◽  
pp. 327-342 ◽  
Author(s):  
Domenico Magisano ◽  
Francesco Liguori ◽  
Leonardo Leonetti ◽  
Daniela de Gregorio ◽  
Giulio Zuccaro ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Nonlinear Analysis ◽  
Fire Resistance ◽  
Time Dependent ◽  
Yield Surfaces

ON THE TIME-DEPENDENT SPECIFIC HEAT OF GLASSES AT LOW TEMPERATURES

1978 ◽  
Vol 39 (C6) ◽  
pp. C6-970-C6-972 ◽  
Author(s):  
R. Rammal ◽  
R. Maynard
Keyword(s):  
Specific Heat ◽  
Low Temperatures ◽  
Time Dependent

TIME-DEPENDENT PHENOMENA CAUSED BY THE EC DECAY IN Co2+ [Fe(CN)6]3-

1980 ◽  
Vol 41 (C1) ◽  
pp. C1-239-C1-240 ◽  
Author(s):  
Takayuki Kobayashi ◽  
Tetsuo Kitahara
Keyword(s):  
Time Dependent
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