| 烧结金属纤维材料吸声性能优化研究 |
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| 引用本文： | 张波,陈天宁.烧结金属纤维材料吸声性能优化研究[J].宁夏工程技术,2009,8(3):208-212. |
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| 作者姓名： | 张波 陈天宁 |
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| 作者单位： | 1. 宁夏大学,机械工程学院,宁夏,银川,750021;西安交通大学,机械工程学院,陕西,西安,710049
2. 西安交通大学,机械工程学院,陕西,西安,710049 |
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| 基金项目： | 国家重大基础研究规划项目，国家自然科学基金重点项目，宁夏高等学校科学研究项目 |
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| 摘 要： | 以烧结金属纤维多孔材料为研究对象,构造了2种具有宽频吸声特点的优化目标函数Obj1和Obj2,并分析和讨论了各自的特点.最后采用模拟退火遗传算法和序列二次规划法对烧结金属纤维材料的吸声性能进行了优化.通过优化计算,获得了不同厚度烧结金属纤维材料获得最优宽频吸声性能时的材料孔隙率、曲折度因子、静流阻率以及静流阻等宏观声学参数的变化规律,从而为烧结金属纤维材料的工程应用提供参考依据.
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| 关 键 词： | 烧结金属纤维 吸声性能 优化 |
On the optimization of sound absorption characteristics of porous sintered fibrous metal |
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| ZHANG Bo,CHEN Tianing.On the optimization of sound absorption characteristics of porous sintered fibrous metal[J].Ningxia Engineering Technology,2009,8(3):208-212. |
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| Authors: | ZHANG Bo CHEN Tianing |
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| Affiliation: | ZHANG Bo, CHEN Tianing (1.School of Mechanical Engineering, Ningxia University, Yinchuan 750021,China; 2.School of Mechanical Engineering, Xi＇an Jiao tong University, Xi＇an 710049,China) |
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| Abstract: | Focusing it attention on sintered fibrous metal, this paper puts forward two optimization objective functions （Objl and Obj2） for wide frequency sound absorption optimization. Also the characters of each objective function are discussed and analyzed. Then the acoustic optimization for the material is performed using a successive quadratic programming （abbr.SQP） method and hybrid generic algorithm. By means of calculating, the optimized acoustic parameters of porous sintered fibrous metals with difference thickness such as porosity, tortuosity, flow resistance and static flow resistivity are obtained therefore. The optimization in this paper provides reference and guide for the wide frequency sound absorption design and applications of porous sintered fibrous metals. |
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| Keywords: | sintered fibrous metal sound absorption characteristics optimization |
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