scholarly journals HYSTERETIC CHARACTERISTICS AND PLASTIC DEFORMATION CAPACITY OF UPLIFT YIELDING BASE-PLATES FOR CONTROLLED ROCKING FRAMES

2010 ◽  
Vol 75 (652) ◽  
pp. 1159-1166 ◽  
Author(s):  
Mitsumasa MIDORIKAWA ◽  
Tatsuya HASEGAWA ◽  
Tadashi ISHIHARA ◽  
Tatsuya AZUHATA ◽  
Tetsuhiro ASARI
Keyword(s):  
Plastic Deformation ◽  
Deformation Capacity ◽  
Hysteretic Characteristics ◽  
Base Plates

Correlations between plastic deformation capacity and fragility/characteristic free volume in amorphous alloys

2018 ◽  
Vol 6 (1) ◽  
pp. 015201
Author(s):  
Xiaojin Xu ◽  
Zhilin Long ◽  
Zhihai Ping ◽  
Chaoping Yan ◽  
Wei Chai
Keyword(s):  
Plastic Deformation ◽  
Free Volume ◽  
Amorphous Alloys ◽  
Deformation Capacity

The Influence of Different Stress States on 16MnR Deformation Capacity

2013 ◽  
Vol 716 ◽  
pp. 590-594
Author(s):  
Shi Lei Zhao ◽  
Yi Liang Zhang ◽  
Gong Feng Jiang
Keyword(s):  
Plastic Deformation ◽  
Stress State ◽  
Equivalent Stress ◽  
Great Influence ◽  
Equivalent Strain ◽  
Complex Stress State ◽  
Biaxial Stress ◽  
Deformation Capacity ◽  
Engineering Structures ◽  
Stress States

16MnR is the typical material of pressure equipment which worked under complex stress state in engineering application. In order to be close to the actual combined tension-shearing stress state and explore the relationship of deformation capacity and different stress state, many groups of combined tension-torsion tests on 16MnR specimens were designed and the equivalent stress-strain relation under different stress state was obtained. The concept of stress triaxiaty (TS value) was cited to characterize the different stress state and the result showed different stress states have a great influence on the material plastic deformation capacity, TS value turns larger, the plastic deformation weakened; 16MnR has a strongest plastic deformation capacity in pure torsion; the level of tensile stress had no significant effect on the maximum stress in the biaxial stress state, but has a significant inverse relationship with the maximum equivalent strain .At last, the mathematical relationship between maximum equivalent-strain and stress triaxiaty could be found. If the stress state of one point in the engineering structures is certain, the maximum equivalent-strain can be estimated.

scholarly journals Ductility and Seismic Suitability of Locally Sourced High Yield Rebars in Benin City

2020 ◽  
Vol 4 (2) ◽  
pp. 458-462
Author(s):  
E. Nwankwo ◽  
E. Attama
Keyword(s):  
Plastic Deformation ◽  
Strain Hardening ◽  
Tensile Force ◽  
Tensile Tests ◽  
High Yield ◽  
Damping Capacity ◽  
Eurocode 8 ◽  
Deformation Capacity ◽  
Benin City ◽  
Energy Absorbing

Ductility is the ability of a system to sustain large deformations beyond its yield point without breaking or failing. Eurocode 8 makes allowance for receipt of seismic forces using the damping capacity of ductile members. This allows for the absorption of energy and helps increase the amount of energy absorbed by ductile structures before failure. This paper investigates the maximum ductility locally sourced steel rebars in Benin City structure can sustain without damage by establishing parameters that influence ductility. Tensile tests were conducted for rebar sizes of 10 mm, 12 mm, and 16 mm diameters, which were sourced from three different vendors within Benin City, Nigeria. The strain-hardening ratio Stu/Sty, i.e. the ratio of tensile strength Stu to yield strength Sty, and the elongation at maximum tensile force Agt were investigated in order to determine plastic deformation capacity and the degree of ductility of these rebars. A numerical model – the modified Ramberg- Osgood and Rasmussen equations – was modified in order to predict the experimentally obtained ductility parameters of these locally sourced rebars. The model collaborates well with experiments and could be used to establish ductility parameters of local rebars. Also, ductility test results showed that strain hardening ratios and elongation were relatively low (Recommended strain hardening ratio of rebar for seismic design is 1.15) and this could result in reinforced concrete structures made with these rebar exhibiting moderate ductility, i.e. a moderate plastic deformation capacity which might not have sufficient energy absorbing capacity in events of large earthquakes.

Plastic Deformation Capacity of H-Beams with Composite Slab Connected to SHS Column

2013 ◽  
Author(s):  
Naoki Asakura ◽  
Tsuyoshi Tanaka ◽  
Takaaki Tsukada ◽  
Keiichiro Suita ◽  
Kohei Takatsuka
Keyword(s):  
Plastic Deformation ◽  
Deformation Capacity ◽  
Composite Slab
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