Search Results

1 - 10 of 78 items :

  • pitch length x
Clear All

2×2 braided composites. Journal of composite materials, 40(6), 533-546. [11] Wan, Z., Li, J. (2006). Braided angle measurement technique for three-dimensional braided composite material preform using mathematical morphology and image texture. AUTEX Research Journal, 6(1), 30-39. [12] Gong, L., and Wan, Z. (2006). Automatic measurement technology on braided pitch length of three-dimensional braided composite material preform. Computer Measurement & Control (in Chinese), 14(6), 730-733. [13] Wan, Z., Shen, J., and Wang, X. (2004). Measure and research on braided

Introduction Small-sided games (SSGs) are currently widely used as methods of training in soccer. Hill-Haas et al. (2011) define this method of training as a technique grounded in the use of preparation matches with modifications based on the reduction of pitch size, typically using adapted rules and fewer players than in real-life competition scenarios. Based on the concept that each field has dimensions of length and width, the technique determines three types of small fields: (1) square, (2) longer than wider, and (3) wider than longer. SSGs are used by many

Introduction Small-sided games (SSGs) are now a common feature of soccer training ( Ford et al., 2010 ) as they enable a greater understanding of which indices impact players’ responses ( Ade et al., 2014 ). The SSG playing area is a structural element that is modified most frequently when planning training drills. Typical modifications include variations in the length and width of the pitch and the relative space per player (Casamichana and Castellano, 2010) or maintaining the same pitch dimension but dividing it into different areas ( Gonçalves et al., 2017

. Goodier. Pitch and Curvature Corrections for Helical Springs. J Appl Mech 1958 (25), 466-470. [8] C. J. Ancker, J. N. Goodier. Theory of Pitch and Curvature Corrections for the Helical Springs-I (Tension). Trans ASME- J Appl Mech 1958 (25), 471-483. [9] C. J. Ancker, J. N. Goodier. Theory of Pitch and Curvature Corrections for the Helical Springs-II (Torsion). Trans ASME- J Appl Mech 1958 (25), 484-495. [10] A. M. Wahl. Mechanical Springs. 2nd ed., McGraw-Hill, New York, 1963. [11] G. A. Costello. Radial Expansion of Impacted Helical Springs. J Appl Mech ASME 1975 (42


A novel parallel manipulator with 3 legs (2 actuated by linear actuators and one supporting pillar),which is applied in a wheel loader driving simulator, is proposed in this paper. The roll angle and the pitch angle of the platform are derived in closed-form of functions of the variable lengths of two actuators. The linear velocity and acceleration of the selected point and angular velocity of the moving platform are determined and compared with measurement results obtained in the respective point and in the body of the wheel loader. The differences between the desired and actual actuator displacements are used as feedback to compute how much force to send to the actuators as some function of the servo error. A numerical example with a proposed mechanism as a driving simulator is presented


With the help of finite element analysis, this research paper deals with the energy absorption and collapse behavior with different corrugated section geometries of hollow tubes made of aluminum alloy 6060-T4. Literature available experimental data were used to validate the numerical models of the structures investigated. Based on the results available for symmetric crushing of circular tubes, models were developed to investigate corrugated thin-walled structures behavior. To study the collapse mechanism and energy absorbing ability in axial compression, the simulation was carried in ABAQUS /EXPLICIT code. In the simulation part, specimens were prepared and axially crushed to one-fourth length of the tube and the energy diagram of crushing force versus axial displacement is shown. The effect of various parameters such as pitch, mean diameter, corrugation, amplitude, the thickness is demonstrated with the help of diagrams. The overall result shows that the corrugated section geometry could be a good alternative to the conventional tubes.

, Hamill J. Variability in kinematic coupling assessed by vector coding and continuous relative phase. Journal of biomechanics, 2010; 43(13): 2554-2560 Moura FA, Martins LE, Anido RO, Ruffino PR, Barros RM, Cunha SA. A spectral analysis of team dynamics and tactics in Brazilian football. J Sports Sci, 2013; 31(14): 1568-1577 Moura FA, Martins LEB, Anido RO, Barros RML, Cunha SA. Quantitative analysis of Brazilian football players' organisation on the pitch. Sports Biomech, 2012; 11(1): 85-96 Moura FA, Santana JE, Marche AL, Aguiar TH, Rodrigues ACMA, Barros RML

References Bolinger, Dwight. 1958. A theory of pitch accent in English. Word 14: 109-149. Cutler, Anne, Dahan Delphine and van Donsellar, Wilma. 1997. Prosody in the comprehension of spoken language: a literature review. Language and Speech 40: 141-202. Fry, Denis B. 1955. Duration and intensity as acoustic correlates of linguistic stress. JASA 27: 765-768. Fry, Denis B. 1958. Experiments in the perception of stress. Language and Speech 1: 126-152. Gussenhoven, Carlos. 2007. A vowel height split explained. Compensatory listening and Speaker Control. In J


This paper discusses the optimization of surface-mounted permanent magnet brushless AC (PMBLAC) motor using Analytical Sub-domain model with Differential Evolution Algorithm (ASDEA). Only two regions were considered in this analytical sub-domain model, ie magnet and airgap regions, with assistance of Complex Relative Permeance Function (CRPF) to account for the stator slotting effect. Five machine parameters were chosen to be optimized, namely the magnet arc-pole-pitch ratio, slot opening width, magnet thickness, airgap length and stator inner radius. The optimization process has four objectives, ie minimum torque ripple, low cogging torque, high efficiency, and high output torque. The results from the optimized ASDEA were compared with the Analytical Sub-domain Genetic Algorithm (ASGA) and further validated against 2-D finite element model (FEM). Results show a good agreement between analytically optimized models and finite element model. The ASDEA has faster computational time compared to ASGA, and this provides benefit in terms of reducing the machine design parameterization time and less redundancy work required to achieve motor design specifications.

matches were played according to soccer rules, except match duration (30min, without breaks) and players’ substitution (not allowed). The pitch size was adjusted to standardize the measure for all conditions (length: 100 m, width: 64 m). Six extra soccer balls were always available near the goalposts and on the side of the pitch for prompt replacement when the ball left the playing area. All matches were proceeded by a planned, standardised warm up of 15 min comprising running activities, small-sided games and stretching. Following this period, the players simulated a