The manufacturing tolerance of the permanent magnets (PMs) is inherent in produce machine. These tolerances influence back electromotive force (EMF), which an important response motor. In order to enhance quality product, authors need reduce these tolerances, but it very difficult and involves a number costs. Therefore, this study presents robust design EMF characteristic analysis considering PM interior synchronous motor (IPMSM). Among optimisation method, Taguchi based on orthogonal array...

This paper investigates the influence of various stator pole shapes and yoke structures in switched reluctance motors (SRMs) on mechanical behavior caused by electromagnetic force. The part SRM produces most vibration. geometric design is therefore necessary to reduce Based structural finite element method (FEM), free forced vibrations for with 6/4 poles are analyzed. Then a less vibration structure proposed. Some numerical computations prototype motor verified experimental results.

A three-dimensional nonlinear finite-element model of single nail connection was developed based on transversely isotropic plasticity. In order to have the account for crushing behavior wood during embedment, a procedure studied implement theory beam foundation in solid element modeling. Within prescribed volume surrounding nail, defined with material parameters, which were determined through nail-embedment tests. Introduction justified by comparing results simulations or without foundation....

<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> This paper deals with the permanent magnet performance evaluations in a variable flux memory motor (VFMM) using coupled finite-element method and Preisach modeling, which is presented to analyze magnetic characteristics of magnets. The focus this operation characteristic evaluation relative magnetizing direction quantity magnets on remagnetization demagnetization conditions VFMM. </para>

<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> This paper presents a design approach to an interior permanent magnetic synchronous motor (IPMSM) for the compressor of hybrid electric vehicle operated in 42-V battery system. The is estimate range inductance and back-EMF satisfy required efficiency IPMSM. Then, preliminary geometry satisfying region decided by PM type, current density, fill factor, so on. Last, detailed with optimization...

High Temperature Superconducting (HTS) synchronous motors consist mainly of rotational (HTS coil) and stationery (copper parts. The HTS coil running at a speed is not influenced by the magnetic field generated stator but affected considerably initial or transient operation. Therefore, computational analysis to determine optimal design damper an important factor in protecting motor. This paper presents parameters for 5 MW motor using characteristics current, which proportional alternating coil.

A high-performance wood-frame shear wall system, named the MIDPLY truss (MTW), was developed for application to midrise buildings. The basic MTW system consists of metal-plate–connected wood trusses, sheathing panels, and steel tie-downs. panels are placed between trusses connected with mechanical fasteners. main concept is increase lateral load resistance a by reconfiguring frame members into load–resisting trusses. In this study, feasibility investigated. Eight 2,440×2,440 mm walls were...

Cross-laminated timber (CLT) is a relatively new engineered wood for construction. It great shear wall material. was known that the performance of CLT depends on connections. In connection, nail or screw has to be installed with certain distance from end timber. Current building code specifies name distance. The decided as minimum not make splitting tearing out in lumber glued laminated As wood, connection need identified because cross-wisely products like plywood. Different lumber, cross...

Abstract This study is aiming at the simulation of wood compression (C) a macroscopic level by means three-dimensional finite element analysis (3D-FEA) solid and evaluation capability limitations this approach. C-Tests were carried out on Douglas fir according to ASTM D 143. The specimens included 25×25×100 mm 3 cuboid bars for longitudinal (L), radial (R) tangential (T) directions conventional 50×50×150 blocks perpendicular grain (⊥) direction. Two sets parameters developed 3D-FEA was...

Electrophoretic deposition of low voltage phosphors was successfully carried out on patterned indium–tin–oxide glass in order to develop prototype full color field emission display devices. The optimized suspension consisted 2–3 μm size isopropyl alcohol, and mixed La(NO3)2 Al(NO3)2 salts for the best panel images. ZnS:Cu, Al, ZnS:Ag, Cl, Y2O2S:Eu were used produce primary green, blue, red colors, respectively. compositional structural analysis performed basic parameters, such as time...

This paper describes an approach to robust design of the field coil shape for High Temperature Superconducting Motor (HTSM), considering maximum B/spl perp/ reduction enhance robustness. The reduce should be considered in order maintain stability and substantial improvement on performance HTSM. is based Response Surface Methodology (RSM) estimated model used minimize total sensitivity variables. A validity this verified through comparing solution with normal result obtained by a conventional...

This paper presents a analysis method to estimate the hysteresis torque of permanent magnet motor using core loss data without loop. In which is used in electric power steering system, important predict accurate offset including bearing friction. this paper, computed by that obtained from experiment at low frequencies. Hysteresis calculated as divided speed. quite simple than use Preisach model for calculating torque. Finally, validity verified comparison with test results.

Inductance is an important parameter to assess electric motor characteristics. In this paper, the methods of apparent and incremental inductance calculations are introduced for a transverse flux linear (TFLM), which has peculiar coil shape. To consider nonlinearity magnetic material, nonlinear analysis performed by 3-dimensional equivalent circuit network (3D EMCN). The calculation method verified test results.

삼차원 솔리드 유한요소 방법을 이용한 목재 거동 해석을 보다 효율적으로 손쉽게 활용하기 위하여, 이에 필요한 목재재료모델 생성 개발하였다. 2단선형 탄소성이방성 이론에 근거하여 목재의 주요 세 방향 즉, 섬유, 방사 및 접선방향의 구성방정식을 정의하였다. 목재재료상수 결정의 단순화를 위하여 방사방향과 특성을 섬유직각 방향으로 통합하고, 요구되는 총 27개의 재료입력상수를 방향별 탄성계수와 항복응력, 그리고 프와송 비를 포함하는 6개의 독립상수로 단순화하였다. 개발된 목재재료모델을 이용하여 북미 더글라스 퍼 압축시험에 대한 모델을 개발하고 방향에 실험 측정치들과 시뮬레이션 결과를 비교하였다. 성공적인 모델해석 얻었으며, 이를 바탕으로 향후 진척되어야 할 연구개발 방향과 예상되는 문제점들을 논의하였다. A simplified material model, which was efficiently implemented in a three-dimensional finite solid...