Results 21 to 30 of about 1,524,498 (245)

Failure analysis based on microvoid growth for sheet metal during uniaxial and biaxial tensile tests [PDF]

open access: yes, 2013
The aim of the presented investigations is to perform an analysis of fracture and instability during simple and complex load testing by addressing the influence of ductile damage evolution in necking processes.
Abbassi, Fethi   +2 more
core   +1 more source

Experimental and numerical analysis of micromechanical damage in the punching process for High-Strength Low-Alloy steels [PDF]

open access: yes, 2014
Sequential sheet metal forming processes can result in the accumulation of work hardening and damage effects in the workpiece material. The mechanical strength of the final component depends on the “evolution” of these two characteristics in the ...
GERMAIN, Guénaël   +3 more
core   +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

Modelling of dynamic damage and failure in aluminium alloys [PDF]

open access: yes, 2012
A physically based damage and failure model, applicable to orthotropic metals is proposed in this paper. To account for the physical mechanisms of failure, the concept of thermally activated damage initially proposed by Klepaczko [1], has been adopted as
Djordjevic, Nenad   +3 more
core   +1 more source

Effects of Temperature and Strain Rate on the Ductility of an API X65 Grade Steel

open access: yesApplied Sciences, 2022
In the last few decades, great effort has been spent on advanced material testing and the development of damage models intended to estimate the ductility and fracture of ductile metals.
Gabriele Cortis   +4 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

Numerical integration of an advanced Gurson model for shear loading: Application to the blanking process [PDF]

open access: yes, 2013
A new extension of the Gurson damage model has been proposed recently to predict ductile fracture under shear dominated loads. The aim of this work is to verify the ability of this approach to simulate, in an accurate way, the damage evolution in ...
GERMAIN, Guénaël   +3 more
core   +1 more source

Punching Fracture Experiments and Simulations of Unstiffened and Stiffened Panels for Ships and Offshore Structures

open access: yes한국해양공학회지, 2020
Ductile fracture prediction is critical for the reasonable damage extent assessment of ships and offshore structures subjected to accidental loads, such as ship collisions and groundings.
Sung-Ju Park, Joonmo Choung
doaj   +1 more source

Experimental study of the brittle–ductile transition in hot cutting of SG iron specimens [PDF]

open access: yes, 2013
http://www.sciencedirect.com/science/article/pii/S0924013612002579The present paper investigates the brittle-ductile transition (BDT) of the primary shear zone during cutting of spheroidal graphite (SG) iron in the austenitization temperature range ...
EL MANSORI, Mohamed   +2 more
core   +1 more source

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