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过去柴油机设计惯常遵循设计-试验-再设计的程序。现在设计中应用有限元分析法,它不需制出零件实物却能模拟零件处于实际工作状态下,快速分析研究零件性能并提出几个设计方案。 DDA(Detroil Diesel Allison)公司开发的多用途Strata通用有限元分析程序,可用于研究极限变形、热应力、陶瓷结构幸存概率和金属陶瓷组合件装配参数,此外,有限元分析法同试验设计相结合的Taguchi法能更有效分析零件的可靠性。 1 金属陶瓷组合零件设计陶瓷在柴油机中颇具魅力,它耐热、耐蚀、耐磨等,为此,人们致力为柴油机高温零件开发陶瓷件。陶瓷性脆,会突然断裂、缺乏延性,因此,要
In the past, diesel engine design used to follow the design - test - redesign process. Now the design of the application of finite element analysis, which does not need to produce parts in kind but can simulate parts in the actual working state, rapid analysis of parts performance and put forward several design options. The versatile Strata General Finite Element Analysis program developed by Detroit Diesel Allison can be used to study ultimate deformation, thermal stress, survivability of ceramic structures, and assembly parameters of cermet assemblies. In addition, finite element analysis is combined with experimental design Taguchi method can more effectively analyze the reliability of the parts. 1 Ceramic composite parts design Ceramic quite attractive in diesel engines, it is heat-resistant, corrosion-resistant, wear-resistant, etc. Therefore, people are committed to the development of high-temperature diesel engine parts ceramic parts. Ceramic brittle, will suddenly rupture, the lack of ductility, therefore, to