In finite-element methods for solving electromagnetic field problems, the use of edge elements has become very popular. In fact, edge elements are often said to be a cure for many difficulties that are encountered and they are claimed to yield accurate results. In the present paper we analyse these claims for tetrahedral elements. In particular we compare two different types of "linear" edge elements and the classical linear nodal element. Comparisons for higher-order elements and elements defined on other elementary subdomains, for instance on hexahedra, run along the same lines and yield similar conclusions.
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机译:带有可动短臂的挖掘机等-在后面的旋转范围AB处的面向抓爪的侧面具有松动元件AB DE4218502A在短臂(2)的自由端装有一个工作元件(4),相对于该抓手的对面装有抓爪(6)。工作元件可在悬臂上旋转并且可停在每个相应的位置。抓爪独立于工作元件枢转地安装在其旋转平面上。抓爪被往复驱动w.r.t.工作元素。悬臂在与抓爪相反的一侧具有一个松动元件(8),该元件伸入抓爪的旋转范围内。首选松开元件具有渐缩的切削刃。使用/优点-对于重土工作,应使用在起吊过程中松开挖出的物料的设施。 AN 93396177 TI隔热材料的制造方法-使用额外的工艺均匀混合结合剂和隔热材料,然后用CO2气体冲洗