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| 1 | Spline Fictitious Boundary Element Alternating Method for Edge Crack Problems with Mixed Boundary Conditions显示文摘The alternating method based on the fundamental solutions of the infinite domain containing a crack,namely Muskhelishvili’s solutions,divides the complex structure with a crack into a simple model without crack which can be solved by traditional numerical methods and an infinite domain with a crack which can be solved by Muskhelishvili’s solutions.However,this alternating method cannot be directly applied to the edge crack problems since partial crack surface of Muskhelishvili’s solutions is located outside the computational domain.In this paper,an improved alternating method,the spline fictitious boundary element alternating method(SFBEAM),based on infinite domain with the combination of spline fictitious boundary element method(SFBEM)and Muskhelishvili’s solutions is proposed to solve the edge crack problems.Since the SFBEM and Muskhelishvili’s solutions are obtained in the framework of infinite domain,no special treatment is needed for solving the problem of edge cracks.Different mixed boundary conditions edge crack problems with varies of computational parameters are given to certify the high precision,efficiency and applicability of the proposed method compared with other alternating methods and extend finite element method. | Z.Xu M.Chen X.M.Fan | 2018 | Computer Modeling in Engineering & Sciences2018，，9： | 1 |
| 2 | 通过分析配合力和SSR标记对热带和温带玉米近交种进行杂种优势分组显示文摘本研究之目的是分析25个热带玉米近交种和4个温带近交种产量性状的配合力以及这两者间的遗传关系,并通过比较配合力和SSR标记的分析结果来划分杂种优势组。本研究所用的25个热带玉米近交种是从5个主要热带玉米群体和地方种即Suwan 1。 | X.M.Fan J.Tan 谢国禄 | 2004 | 国外作物育种2004，23，4： | 0 |
| 3 | THE INVESTIGATION ON PLASMA ARC TREATMENT OF CHROMIUM PLATED ALLOY STRUCTURE STEEL显示文摘The technology of plasma arc was used to modify the interface adhesion between c hromium coating and steel substrate. The interface microstructure was studied as a function of plasma arc processing parameters. Microstructure analysis was per formed by optical microscopy, scanning electron microscopy and electron probe. T he microhardness distribution along the depth of a cross-section of the chromium coating and the substrate was measured. The results show the energy density of transferred plasma arc is obviously higher than plasma non-transferred arc. The molten interface was obtained by plasma transferred arc. Interfaces between chro mium coating and steel substrate can be divided by plasma non-transferred arc in to three classes: non-molten, a little molten and molten. Good interface bonding was obtained by proper process parameters. The microhardness of chromium coatin g decreases with increasing energy density of plasma arc. | X.M.Fan J.W.Huang K.H.Wang Q.Liu | 2005 | Acta Metallurgica Sinica(English Letters)2005，18，3： | 0 |
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