期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
基于筛选试验的设计因素贡献率分析 被引量:2
1
作者 吴扬东 《统计与决策》 CSSCI 北大核心 2017年第21期175-178,共4页
筛选试验常采用二水平部分因子试验,对试验数据的处理采用方差分析的方法,其结论没有定量的指出各因素对结果影响的大小;针对这一问题,文章对因素的离差平方和作进一步分解,结果显示,因素的离差平方和包含该因素所引起的离差平方和以及... 筛选试验常采用二水平部分因子试验,对试验数据的处理采用方差分析的方法,其结论没有定量的指出各因素对结果影响的大小;针对这一问题,文章对因素的离差平方和作进一步分解,结果显示,因素的离差平方和包含该因素所引起的离差平方和以及一部分误差引起的离差平方和两部分内容。在因素的离差平方和中扣除误差引起的离差平方和,其余部分就是该因素引起的纯离差平方和,纯离差平方和在总离差平方和中所占的百分比即为该因素对试验结果的贡献率。最后,以往复泵的设计因素分析为例,对这一方法进行了说明。 展开更多
关键词 筛选试验 离差平方和分解 产品设计 设计因素分析
在线阅读 下载PDF
Cavity noise sensitivity analysis of tire contour design factors and application of contour optimization methodology 被引量:7
2
作者 KIM Seong-rae SUNG Ki-deug +1 位作者 LEE Dong-woo HUH Sun-chul 《Journal of Central South University》 SCIE EI CAS 2012年第8期2386-2393,共8页
Cavity resonance noise of passenger car tires is generated by interacting excitation between a tire structure and the fill gas (air), and generally lies in a frequency range of 200?250 Hz. As such, this noise is stron... Cavity resonance noise of passenger car tires is generated by interacting excitation between a tire structure and the fill gas (air), and generally lies in a frequency range of 200?250 Hz. As such, this noise is strongly perceived and may be a serious source of driver annoyance. Thus, many studies regarding the cavity noise mechanism and its reduction have already been conducted. In this work, a vibro-acoustic coupled analysis was conducted between a tire structure and air cavity. Using this analysis, we can more accurately simulate the tire noise performance in the region of the cavity resonance frequency. An analysis of the effects of variation of tire contour design factors was conducted, using design-of-experiments methods. Finally, a multi-objective optimization was performed using in-house codes to reduce the cavity noise level while minimizing the loss of other performances, such as diminished ride comfort and handling caused by the variations of contour. As a result of this optimization, an optimized contour shape was derived, which satisfied the multi-objective performances. 展开更多
关键词 tire cavity noise vibro-acoustic coupled analysis finite element method boundary element method (BEM) sensitivity optimization
在线阅读 下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部