Results 11 to 20 of about 8,161 (264)

Strength and Ductility of Damaged Tempcore Rebars

open access: yesProcedia Engineering, 2015
AbstractThe Tempcore rebars behaviour results from the interaction of the three layers that compose them, with different initial stresses. Therefore,their mechanical properties study is important for the understanding of the rebar overall behaviour. In this paper it is presentedand discussed the results of hardness, strength and ductility obtained in ...
Santos, José, Henriques, A. Abel
openaire   +2 more sources

Implementation of the Quasi-Brittle Damage Model for 2024 Aluminum Alloy under Periodic Loading [PDF]

open access: yesInternational Journal of Advanced Design and Manufacturing Technology, 2019
Damage mechanics is one of the most important parts of mechanical engineering that determines the time life for different mechanical elements. The most various models that have been provided so far in damage mechanics, are related to ductile or brittle ...
Sadegh Ghorbanhosseini, saeed yaghoubi
doaj  

STUDY ON DUCTILE FRACTURE CRITERION PARAMETERS OF HIGH STRENGTH DUPLEX STEEL PLATE

open access: yesJixie qiangdu, 2023
In order to predict the ductile fracture failure of different high-strength steel plates, the damage parameters of the ductile fracture criterion were calibrated by designing the tensile, shear and fracture failure tests of four high-strength steel ...
MA ChunHui   +5 more
doaj  

The Evaluation of Varying Ductile Fracture Criteria for 3Cr20Ni10W2 Austenitic Heat-Resistant Alloy

open access: yesAdvances in Mechanical Engineering, 2013
Most bulk metal forming processes may be limited by ductile fracture, such as an internal or surface fracture developing in the workpiece. Finding a way to evaluate the ductile fracture criteria (DFC) and identify the relationships between damage ...
Yu-Feng Xia   +4 more
doaj   +1 more source

Evaluation of Varying Ductile Fracture Criteria for 42CrMo Steel by Compressions at Different Temperatures and Strain Rates

open access: yesThe Scientific World Journal, 2014
Fracturing by ductile damage occurs quite naturally in metal forming processes, and ductile fracture of strain-softening alloy, here 42CrMo steel, cannot be evaluated through simple procedures such as tension testing.
Guo-zheng Quan   +4 more
doaj   +1 more source

Damage accumulation of bovine bone under variable amplitude loads

open access: yesBone Reports, 2016
Stress fractures, a painful injury, are caused by excessive fatigue in bone. This study on damage accumulation in bone sought to determine if the Palmgren-Miner rule (PMR), a well-known linear damage accumulation hypothesis, is predictive of fatigue ...
Abbey M. Campbell   +3 more
doaj   +1 more source

Numerical Study on Ductile Failure Behaviours of Steel Structures under Quasi-Static Punch Loading

open access: yesJournal of Marine Science and Engineering, 2023
A reliable finite element procedure to simulate shear-dominated ductile fractures in large-scale, thin-walled steel structures is still evolving primarily due to the challenges in determining the failure criterion of metal materials under complex stress ...
Wei Cai   +6 more
doaj   +1 more source

On Micro-Damage in Hot Metal Working Part 2: Constitutive Modelling

open access: yesEngineering Transactions, 2014
Damage constitutive equations are formulated to model the evolution of grain boundary and plasticity-induced damage for free-cutting steels under hot forming conditions.
J. LIN   +4 more
doaj   +1 more source

GTN Model-Based Material Parameters of AZ31 Magnesium Sheet at Various Temperatures by Means of SEM In-Situ Testing

open access: yesCrystals, 2020
Magnesium alloys are primarily associated with complex forming mechanisms, which yield ductility at high temperatures. In sheet metal forming, high triaxiality stress states that favor the ductile damage mechanisms of void formation and growth are known ...
Thorsten Henseler   +4 more
doaj   +1 more source

Studying the Damage Evolution and the Micro-Mechanical Response of X8CrMnNi16-6-6 TRIP Steel Matrix and 10% Zirconia Particle Composite Using a Calibrated Physics and Crystal-Plasticity-Based Numerical Simulation Model

open access: yesCrystals, 2021
The mechanical behavior of newly developed composite materials is dependent on several underlying microstructural phenomena. In this research, a periodic 2D geometry of cast X8CrMnNi16-6-6 steel and 10% zirconia composite is virtually constructed by ...
Faisal Qayyum, Sergey Guk, Ulrich Prahl
doaj   +1 more source

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