Results 61 to 70 of about 32,785 (302)

Fragmentation of armor piercing steel projectiles upon oblique perforation of steel plates

open access: yesEPJ Web of Conferences, 2012
In this study, a constitutive strength and failure model for a steel core of a14.5 mm API projectile was developed. Dynamic response of a projectile steel core was described by the Johnson-Cook constitutive model combined with principal tensile stress ...
Aizik F.   +4 more
doaj   +1 more source

Impact Dynamic Response of Spherical Net Shells: Finite Element-Based Computational Analysis Investigating the Influence of Dynamic Constitutive Models

open access: yesBuildings, 2023
The net shell is a widely utilized large-span space structure known for its aesthetically pleasing design and uniform load distribution, as well as serving as a prominent architectural landmark. In recent years, the impact resistance research of mesh and
Yuhang Shen   +3 more
doaj   +1 more source

Effect of cutting parameters on tool-chip interface temperature in an orthogonal turning process [PDF]

open access: yes, 2014
The aim of this paper is to investigate the effect of cutting speed and uncut chip thickness on cutting performance. A Finite Element Method (FEM) based on the ABAQUS explicit software which involves Johnson-Cook material mode and Coulombs friction law ...
Borazjani, Soroosh   +2 more
core   +1 more source

Differential Item Functioning on the Patient Health Questionnaire 8 by Disease Subtype, Language, Sex, and Age Among People With Systemic Sclerosis: A Scleroderma Patient‐Centered Intervention Network Cohort Study

open access: yesArthritis Care &Research, EarlyView.
Objective Somatic items used in depression assessments can potentially overlap with symptoms related to physical illness, including systemic sclerosis (SSc). No studies have looked at whether somatic depression items may be influenced by diffuse versus limited SSc disease subtypes, which are associated with varying degrees of symptom presentation.
Sophie Hu   +110 more
wiley   +1 more source

Modelling of the dynamic behaviour of hard-to-machine alloys

open access: yesEPJ Web of Conferences, 2012
Machining of titanium alloys and nickel based superalloys can be difficult due to their excellent mechanical properties combining high strength, ductility, and excellent overall high temperature performance.
Bäker M.   +4 more
doaj   +1 more source

Simulasi Numerik Perilaku Tumbukan Pelat Baja Terhadap Proyektil [PDF]

open access: yes, 2013
Simulasi numerik tiga dimensi untuk mempelajari ketahanan balistik pada target ulet yang bertumbukan dengan proyektil normal telah dilakukan. Pada penelitian ini target pelat baja Weldox 460 E dengan tebal 12 mm dimodelkan bertumbukan ...
Haryanto, Ismoyo   +4 more
core  

Cumulative Social Disadvantage and Disease Activity in Juvenile Idiopathic Arthritis: A Childhood Arthritis and Rheumatology Research Alliance Registry Study

open access: yesArthritis Care &Research, EarlyView.
Objective Social determinants of health (SDOH) contribute to juvenile idiopathic arthritis (JIA) disparities, but most studies have assessed SDOH independently rather than cumulatively across individual, family, and neighborhood levels. Using a socioecological framework, we investigated the relationship among cumulative social disadvantage ...
William Daniel Soulsby   +448 more
wiley   +1 more source

Finite element modelling for temperature, stresses and strains calculation in linear friction welding of TB9 titanium alloy

open access: yesJournal of Materials Research and Technology, 2019
In the present paper, finite element method (FEM) simulation of linear friction welding (LFW) TB9 titanium alloy was carried out using ABAQUS software.
Xiawei Yang   +7 more
doaj   +1 more source

Phenomenological and Physically Based Modeling of Flow Stress and Strengthening Mechanism of Inconel 718

open access: yesAdvanced Engineering Materials, EarlyView.
Nickel‐based alloys are widely used in high‐temperature applications due to their excellent mechanical strength and oxidation resistance. However, properties such as high‐temperature strength and pronounced work‐hardening make them difficult to machine.
Soheil Rooein   +2 more
wiley   +1 more source

Identification of Johnson-Cook material model parameters for laser shock peening process simulation for AA2024, Ti–6Al–4V and Inconel 718

open access: yesJournal of Materials Research and Technology
This paper addresses the identification of Johnson-Cook material model parameters for the simulation of high strain rate processes such as laser shock peening.
Ruslan Kuliiev   +2 more
doaj   +1 more source

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