Papers by Keyword: Finite Element Analysis (FEA)

Abstract: Comparing to oil transformer, the dry-type transformer minimizes explosion and fire hazard, as well as long product life. Meanwhile winding insulation plays an important role in the reliability, yet winding temperature rise may cause deterioration to the insulation. So it is critical to have temperature rise analysis for hot spot and prediction in the period of prototype design using finite element method, such as CFD. The key factors like completed boundary condition and coupling of electro-magnetic with thermal fluid will be obtained from experiment which could provide more accurate heat transfer coefficient for new design. Relative to method of thermal network, CFD has provided more accurate air convection model and different boundary condition definition, thus it could be an original data for other serial product simulation.

Abstract: In order to understand Isolated Heat Transfer Gaskets placement scheme's influence on the dynamic performance of the MED electric control box,on the basis of theoretical analysis, Finite Element Modal analysis and random vibration analysis have proceeded for different Isolated Heat Transfer Gaskets placement program, and comparative analysis of the two results. Analysis results provide the basis for further optimal design of the MED electric control box.

Abstract: The solar-powered platform has great application prospects with its unique characteristics of high cruising altitude and long endurance. This paper presents a high-aspect-ratio long straight composite wing structure. A 3D FEM model is used to study the mechanical performance of the wing under gust, by applying nonlinear analytical method. The wing optimization is focused on high stiffness and light weight. A wing structure of feasible strength and stiffness is obtained. Through analysis, several engineering conclusions are obtained. In addition, the instability features of the main spar are included as well.

Abstract: According to the plunger pump movement principle, this paper analyzed the two kind of typical force situation of the connecting rod, and obtained the theoretical maximum value of the force. The finite element analysis method was applied to analyze the structure strength of the connecting rod. The finite element model of the connecting rod was established, and the load handling and boundary condition was analyzed. The maximum stress 405MPa occurs at the transition from the small end to the link body. The average stress of the link body is 136MPa. The maximum displacement is 0.17mm, belongs to the small deformation range. The last results of the node stress and displacement show that the connecting rod can work safely.

Abstract: The composite leaf spring for trailer truck is developed with weight reduction 60% relative to steel spring, which can be benefit to environment protection and energy saving. In this work, the composite leaf spring is designed and analyzed by finite element method. Then the experimental tests are conducted on the composite leaf spring fabricated by the hot molding process. The spring rate and the maximum load capacity are measured, which have a good agreement with the design results.

Abstract: This paper mainly targeted double roll calender equipment vibration problem of study, using numerical simulation method, investigated the rollers, stents and modal of the whole machine. Conclusion as follows: (1) for the rollers are concerned, turning to the rollers inherent frequency influence is small, can be ignored. (2) stents have not only the front and back, the or so direction of the bending vibration, and torsional vibration, these vibration will influence support the intensity and rigidity. (3) the whole machine is the main complex vibration mode, stents vibration performance for concurrently bending torsional vibration, with vibration frequency increases on the rollers showing torsional vibration.

Abstract: Water pipeline scaling serious by prolonged use, result in a substantial diameter narrowed, reduced water efficiency. Mechanical cleaning is a kind of economic and security cleaning method, current drilling scaling equipment cannot clean effectively. In order to solve this problem, analyzes the dill descaling method. Choose multi-tooth bit as a foundation. Established finite element model for static analysis, gets three direction force diagram. Optimal design drill structure, created a new type of scaling drill. Compared two kinds force analysis results, by improving the structure, distributed stress on multiple cutting tooth, improved cutting conditions, enhanced the drill descale and feed ability, and improved the working life of the unit. Carried out static and dynamic finite element analysis, provide a theoretical basis for follow-up design.

Abstract: Friction stir welding (FSW) is a relatively new solid-state fastening method which is suitable for joining advanced lightweight metal sheets that are hard to weld. Latest literature relating to finite element analysis (FEA) of FSW process is reviewed in this paper. The recent development in FEA of FSW process is described with particular reference to three major factors that influence the performance of FSW joints: modeling technique, tool design and process parameters. The main FE methods used in FSW process are discussed and illustrated with brief case studies from the literature.

Abstract: In this paper, the mixed-mode cohesive fracture behavior of adhesively bonded joints was investigated based on numerical analysis. A modified version of Arcan specimen was employed to conduct a mixed-mode fracture test using a special loading device. A full range of mixed-mode loading conditions including pure mode-I and pure mode-II loading were created by ABAQUS software. This test method is a simple procedure, clamping/unclamping the specimens is easy to achieve and only one type of specimen is required to generate all loading conditions. Finite element analyses were carried out on specimens with different adherends in order to investigate deeply about cohesive fracture behavior of adhesively bonded joints.

Abstract: The feeding crossbeam on the automatic aluminous-winding machine plays a supporting role in the preparation process of feeding pipe, the deformation of the feeding crossbeam have a direct impact on mechanical accuracy, it is difficult problem in model design, which is how to design a reasonable structure and make the crossbeam meets the requirements of strength and stiffness, as well achieve lightweight design. This article considers the complex force of crossbeam, and bases on the principle of virtual work and finite element theory, using ANASYS software to make a finite element model, the relation curves of the stress and the strain under the maximum load are summarized and the stress concentration area is found, The current study provides more reliable results to improve design.