Results 31 to 40 of about 366,377 (310)
Strain localization analysis using a multiscale model [PDF]
, 2007 In order to analyze the formability of steels in sheet metal forming, a ductility loss criterion is coupled with a multiscale model. The behavior at the mesoscopic (grain) scale is modeled by a large strain micromechanical constitutive law, which is then
LEMOINE, Xavier +4 more
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Formability prediction of thin metal sheets using various localization criteria [PDF]
, 2009 The aim of this paper is to give an overview of the theoretical basis of the most significant and commonly used localization criteria reformulated into a unified framework, and to apply these criteria to different materials in order to determine their ...
ALTMEYER, Guillaume +2 more
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Iranian Journal of Materials Science and Engineering, 2021 Phenomenological methods are more diagnostic tools than a predictor, so multi-crystalline material approaches based on their microstructures have been proposed during the last years.
Sedigeh Mohamadnejad Zanjani +2 more
doaj
Experimental And Theoretical Determination Of Forming Limit Curve
Archives of Metallurgy and Materials, 2015 The paper presents a method for determining forming limit curves based on a combination of experiments with finite element analysis. In the experiment a set of 6 samples with different geometries underwent plastic deformation in stretch forming till the ...
Adamus J., Dyja K., Motyka M.
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Prediction and Verification of Forming Limit Diagrams Based on a Modified Shear Failure Criterion
Chinese Journal of Mechanical Engineering, 2023 The forming limit diagram plays an important role in predicting the forming limit of sheet metals. Previous studies have shown that, the method to construct the forming limit diagram based on instability theory of the original shear failure criterion is ...
Haibo Wang +3 more
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The forms and limits of medical ethics
Social Science & Medicine, 1994 As medical ethics has evolved over the past several decades, it has come to be regarded as a domain of applied ethics, that is, the application of a rationally based, philosophical theory to moral problems in health care. But an array of difficulties arise in the attempt to apply general moral theories or norms to concrete problems, difficulties that ...
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Theoretical Determination of Forming Limit Stress Diagram for Steel 1021 Sheet
Tikrit Journal of Engineering Sciences, 2010 Forming limit stress diagram represent the maximum acceptable limits of principal stresses in sheet metal forming. This diagram show the limits of major and minor true stresses for different strain paths (uniaxial tension, plane strain and equibiaxial ...
Anas O. Balod
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Osteosarcoma (OS) and Ewing sarcoma (EWS) are the most common primary bone cancers in children, but acute thrombosis is poorly characterized in this population. Our study evaluated the rates of venous thromboembolism (VTE) and associated risk factors in pediatric patients with bone sarcomas treated over a 10‐year period encompassing
Sarah Kappa +8 more
wiley +1 more source
On the Determination of Forming Limits in Polycarbonate Sheets [PDF]
Materials, 2020 By proposing an adaptation of the methodology usually used in metal forming, this paper aims to provide a general procedure for determining the forming limits, by necking and fracture, of polymeric sheet. The experimental work was performed by means of Nakajima specimens with different geometries to allow to obtain strains in the tensile, plane ...
Rosa Sainz, Ana +5 more
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An Analysis of Forming Limit for Various Arc Radii of Punch in Micro Deep Drawing of the Square Cup
, 2015 This paper presents an explicit dynamic finite element method (FEM) in conjunction with the forming limit diagram (FLD) to analyze the forming limit for the various arc radii of punch in micro deep drawing of square cup. In the present study, the tensile
Yeh, F.-H. +1 more
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