Concepção, modelagem, simulação e usinagem de um aerofólio automotivo auxiliado por computador

With the advancement of computer technology and the availability of technology computer aided design (CAD) errors in the designs are getting smaller. To this end the project aims to assess the reliability of the machine (CNC), which was designed by students of mechanical engineering college engineering - UNESP Bauru, by designing, modeling, simulation and machining an airfoil automotive. The profile template selected for the study will be a NACA 0012 machined plates in medium density fiberboard (MDF) and will be performed with a structural analysis simulation using finite elements and a software CFD (Computational Fluid Dynamics), and test the real scale model in a wind tunnel. The results obtained in the wind tunnel and CFD software will be compared to see the error in the machining process.

Prática de atividade física em estudantes das áreas de saúde e não saúde de uma universidade do interior de São Paulo

The world’s population is having more and more difficulties in performing their daily activities and leisure, becoming, this way, more sedentary. Sedentary lifestyle can be considered as a reduction or as a lack of physical activity, less than the minimum volume suggested by the World Health Organization (WHO). Physical activity changes the behavior and some environmental acts. This study aimed to identify the NAF of students in the area of Physical Education and Healt Nursing and compare it with identified students’ levels non-health areas, being Production Engineer and Pedagogy. Aimed to correlate the found volume of 15 participants, with the state of cardio respiratory fitness (VO2max). The study included 125 students of both sexes from a university located in São Paulo state country. We conducted a cross-sectional study from August to October of 2012. For the initial test of the volume of physical activity we used the International Physical Activity Questionnaire (IPAQ) long version. In order of assessing cardio respiratory fitness, the Katch and McArdle seat test (1981) was used. Data were analyzed according to Physical Activity Level (PAL) presented by the university students in sessions 1, 2, 3, 4 of the IPAQ, and 15 students’ results were correlated with VO2max test. From these results we can say that: IPAQ session 1 showed that students in the health area are statistically superior to the non-health students area to the high-active classification. In session 2 the results were significant and superior to the health area and very active in sedentary classification. The session 3 results were very similar to session 1, showing that the health area as high-active with statistics differences. In session 4 we can see very significant results for health area in high-active areas and irregular actives. A total of 4 sessions found significant results for very active and sedentary. When was the attempt of association between levels 15 participants found the IPAQ long version and test bank VO2max, the results showed no significant association. The results of this study show a need for policies to encourage physical activity in the University environment, emphasizing a greater need for students who do not work in healthcare.

Association of student position in classroom and school performance

We analyzed whether the position of students in classroom is correlated with academic performance, and which factors might be involved. The sample consisted of 16 classrooms in a school year bimester, each one with around 30 students. Each student's position was registered in classroom maps and the reasons for the students' seat choice were gathered by a questionnaire. School performance and classroom absences of each student were collected directly from the teachers' register notebook. We found that better performances of students at school correlate with lower percentages of absence and choices of seating positions closer to the board. Moreover, the main reason to sit in a front position was motivation for learning. We suggest that school performance is associated to students’ position in the classroom because both are affected by the student motivation for learning. As a consequence, changing students' position in the classroom without increasing their motivation is not likely to improve school performance.

Influência do desgaste das garras dos pneus e das condições superficiais do solo nas operações de campo de um trator agrícola

The objective of this work was to compare the performance of a tractor equipped with used and new bias-ply tires (63.4% and 41.2%, front and rear tire waste, respectively), in three surface conditions: tillage soil, vegetal covered soil and firm soil. Field data were collected to calculate: forward speed, front and rear slippage tires, drawbar pull, available power at drawbar bar and fuel consumption. Results showed that both, tires and soil conditions, changed tractor capacity on developing drawbar traction. The worst performance was observed on tillage soil. The best performance of the tractor was observed at firm soil track. On the track with tilled soil, results showed that the forward speed was the lowest among the three soil conditions due to the front and rear slippage tires which was higher than vegetal covered and firm soil tracks. Fuel consumption results showed higher values on tilled tracks when compared with firm and vegetal covered tracks. The fuel consumption levels evaluated on bias-ply tires lead to significant changes on tractor’s performance at tilled soil, indicating that, at this condition, it’s necessary to replace the used tires by new tires. For vegetal covered soil operations, and also on firm soil conditions, used tires, at studied levels, indicated that these tires might still be used without tractor performance changing.

Análise e aplicação de métodos de modularização no desenvolvimento do produto

Pós-graduação em Engenharia de Produção - FEG

Concepção de um dispositivo fisioterápico: parapodium mecanizado

This paper presents a proposal to redesign a physical therapy device for patients with quadriplegia, called parapodium. With the help of the Association of Parents and Exceptional Friends of Guaratinguetá, it was possible to know the currently used device and from this it was conceived changes, allowing the increase of freedom of its central portion, in the down and across positions with mechanical drive . This adaptation is to introduce improvements in the routine of physical therapy professionals and reduce ergonomic problems resulting from repetitive strain during the transfer of patients to the parapodium. In addition to providing greater security for patients who require the use of this equipment. The proposed device comprises: wheel, gearbox and brake systems used for actuation, allowing a degree of turning of the rear post, along an axis which is fixed to the gearbox and the rear structure that permits posterior movement. The mechanism allows the rear post rotate from 0 ° to 90 °. The estimated cost to make the proposal is lower than the marketed parapodiuns, reaching the device's functional expectations