Drawing Force
Mostrando 1-12 de 21 artigos, teses e dissertações.
-
1. Effect of surface roughness and lubrication on the friction coefficient in deep drawing processes of aluminum alloy aa1100 with fem analysis
ABSTRACT Friction between the interface workpiece and tooling has considerable importance in sheet metal forming operations; an accurate description of the friction is necessary to analyze and design new workpieces and tooling. This work suggests a methodology to determine and evaluate the mean coefficient of friction (COF) using the Finite Element Method (F
Matéria (Rio J.). Publicado em: 16/09/2019
-
2. Sense of belonging and social identity on the settlement intentions of rural-urban migrants: evidence from China
RESUMO: Com base nos dados do Laboratório de Dinâmica da Força de Trabalho da China (CLDS) de 2012 e 2014, este artigo usa o modelo de escolha binária do painel para examinar os determinantes das intenções de assentamento de migrantes rurais-urbanos. Os resultados mostram que tanto o senso de pertencimento, quanto a identidade social, desempenham pap�
Cienc. Rural. Publicado em: 29/07/2019
-
3. Effect of surface roughness and lubrication on the friction coefficient in deep drawing processes of aluminum alloy aa1100 with fem analysis 1
ABSTRACT Friction between the interface workpiece and tooling has considerable importance in sheet metal forming operations; an accurate description of the friction is necessary to analyze and design new workpieces and tooling. This work suggests a methodology to determine and evaluate the mean coefficient of friction (COF) using the Finite Element Method (F
Matéria (Rio J.). Publicado em: 20/05/2019
-
4. Strain Hardening of Carbon Steel During Wire Drawing
The Avitzur's limit analysis for the calculation of the drawing force in a wire drawing process is used to study the real behaviour of a carbon steel in an industrial case. The linear hardening assumption, used by Avitzur only for the first step, is extended to the whole process and tested against experimental data. The result shows that the predictions resu
Mat. Res.. Publicado em: 12/03/2018
-
5. Microstructural Evolution of a Pearlitic Steel Subjected to Thermomechanical Processing
The microstructural alterations suffered during the process of drawing deformation and subsequent annealing of pearlitic steel wires, were evaluated by scanning electron microscopy and atomic force microscopy. The deformed material showed the curling structure in cross section while, in the longitudinal section, the lamellae was aligned with the drawing dire
Mat. Res.. Publicado em: 26/02/2018
-
6. Green polyurethane synthesis by emulsion technique: a magnetic composite for oil spill removal
Abstract After the consolidation of the Brazilian biodiesel industry, issues related to the final destination of the glycerin, the by-product from the biodiesel industrial process, drawing the attention of several researchers. There are several uses to this byproduct. Among them, the obtaining of polymers, such as polyurethane (PU), are very encouraged since
Polímeros. Publicado em: 2017-12
-
7. 12 mm Thick Circular Blanks of Al-killed AISI 1020 Steel -Applied for Cylindrical Cup Manufacturing by Multistage Deep Drawing with Simultaneous Ironing
Abstract In this paper a new modified processing route has been proposed for producing long cylindrical cups from 12 mm thick circular blanks of AISI 1020 steel (Aluminium (Al) -killed). In this route, flat blanks were made to preformed shape by stamping operation, followed by multistage deep drawing processes(without blank-holder and with inter-stage stress
Mat. Res.. Publicado em: 21/07/2016
-
8. Relationship between friction force and orthodontic force at the leveling stage using a coated wire
The relationship between orthodontic force and friction produced from an archwire and brackets affects the sliding of the wire in the leveling stage. Objective: The purpose of this study was to evaluate the relationship between force and friction in a small esthetic nickel-titanium (Ni-Ti) wire. Material and Methods: Five esthetic wires (three coated a
J. Appl. Oral Sci.. Publicado em: 2013-12
-
9. Análise da influência de parâmetros do processo de trefilação de barras cilíndricas de aço AISI 1045 via simulação numérica computacional / Title: parameters analysis of the drawing of AISI 1045 steel rods via FEM
This paper aims to analyze the drawing process using simulation and evaluate the influence of process variables such as lubricant (friction coefficient) and angle of die as well as verify the effectiveness of simulation to preview the drawing force, temperature and residual stresses. Experimental work was carried out involving the determination of friction c
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
-
10. Desenho-escrita a ponto de verbo / Writing-drawing at the point of verb
The research is one of the possible development of the action of drawing as a requirement of the body. This work proposes the attempt - and the failure - such as the movement of making art. Believing in the everyday experience with the scriptural force in its performative character, invests in the possibility of activating the latent drawing in the world. By
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 01/04/2011
-
11. Otimização do corte de pontas de um aço livre de intersticiais laminado a quente usando tesoura do tipo guilhotina / Optimization the cut edge of a hot rolled interstitial free steel using a guillotine type shearing machine
The automotive industry\ s demand for high formability steels for use in exposed body panels motivated the development of several interstitial free (IF) steels specifications at Companhia Siderurgica Nacional. The \"IF-Ti\" steel specification belongs to the special deep drawing steels group (CSN EEP-IF), with yield strength <380 MPa, and among all grades of
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/02/2011
-
12. Transcript levels of ten caste-related genes in adult diploid males of Melipona quadrifasciata (Hymenoptera, Apidae): a comparison with haploid males, queens and workers
In Hymenoptera, homozygosity at the sex locus results in the production of diploid males. In social species, these pose a double burden by having low fitness and drawing resources normally spent for increasing the work force of a colony. Yet, diploid males are of academic interest as they can elucidate effects of ploidy (normal males are haploid, whereas the
Genetics and Molecular Biology. Publicado em: 28/10/2011