隔振器及其设计PPT优秀资料

噪声与振动控制技术主讲：盛美萍Prof.ShengMeipingNorthwesternPolytechnicalUniversity西北工业大学精品课程专业核心课程振动与噪声控制技术本讲内容Prof.ShengMeipingNorthwesternPolytechnicalUniversity阻尼作用及产生机理阻尼材料与阻尼结构Prof.ShengMeipingNorthwesternPolytechnicalUniversity阻尼作用及产生机理NorthwesternPolytechnicalUniversityShengMeipingShengMeipingNorthwesternPolytechnicalUniversityShengMeipingShengMeipingNorthwesternPolytechnicalUniversity直接固定组合的阻尼结构吸振器NorthwesternPolytechnicalUniversityShengMeiping弹性结构内阻尼的定义阻尼的作用Prof.ShengMeipingNorthwesternPolytechnicalUniversity阻尼产生机理1，工程材料内阻尼2，流体的粘滞阻尼3，结合面阻尼与库仑摩擦阻尼4，冲击阻尼5，磁电效应阻尼Prof.ShengMeipingNorthwesternPolytechnicalUniversity工程材料内阻尼产生机理在应力作用下分子或晶体之间产生相对运动、滑移，消耗能量。BOCDA应变应力PProf.ShengMeipingNorthwesternPolytechnicalUniversity流体的粘滞阻尼产生机理

结构和流体接触表面产生能量损耗。无粘流体粘滞流体Prof.ShengMeipingNorthwesternPolytechnicalUniversity结合面阻尼与库仑摩擦阻尼

产生机理零件表面接触并承受动态载荷，产生阻尼。OO’BCPC’B’P’Prof.ShengMeipingNorthwesternPolytechnicalUniversity冲击阻尼产生机理通过附加冲击块，将主系统振动能量转换成冲击块的振动能量。Prof.ShengMeipingNorthwesternPolytechnicalUniversity磁电效应阻尼产生机理机械能转换成电能的过程中，由磁电效应产生阻尼。磁极金属导磁片Prof.ShengMeipingNorthwesternPolytechnicalUniversityProf.ShengMeipingNorthwesternPolytechnicalUniversity阻尼材料与阻尼结构阻尼材料1，粘弹性阻尼材料2，阻尼涂料3，沥青型阻尼材料4，复合型阻尼金属板材5，阻尼合金6，其它Prof.ShengMeipingNorthwesternPolytechnicalUniversity粘弹性阻尼材料分类：橡胶类、塑料类特性：随温度变化，随频率变化Prof.ShengMeipingNorthwesternPolytechnicalUniversityShengMeiping工程材料内阻尼产生机理ShengMeiping（封沙阻尼、空气挤压薄膜阻尼）（多层约束阻尼、插条式阻尼）NorthwesternPolytechnicalUniversity工程材料内阻尼产生机理直接黏附的阻尼结构ShengMeipingShengMeipingShengMeipingNorthwesternPolytechnicalUniversity减振器（隔振器）ShengMeipingNorthwesternPolytechnicalUniversityNorthwesternPolytechnicalUniversity粘弹性阻尼材料随温度变化特性Prof.ShengMeipingNorthwesternPolytechnicalUniversity粘弹性阻尼材料随频率变化特性Prof.ShengMeipingNorthwesternPolytechnicalUniversity粘弹性阻尼材料耗能综合特性Prof.ShengMeipingNorthwesternPolytechnicalUniversity阻尼涂料组成：高分子树脂等用途：飞机、船舶、车辆、各种机械涂刷注意点：多次涂刷、干透再刷。Prof.ShengMeipingNorthwesternPolytechnicalUniversity沥青型阻尼材料用途：汽车等分类：熔融型、热熔型、自黏型、磁性型。Prof.ShengMeipingNorthwesternPolytechnicalUniversity复合型阻尼金属板材构成：两块金属板之间夹以粘弹性高分子材料用途：汽车、飞机、潜艇、电机、风机等。特点：衰减性好、耐热性好、机械性好、焊接性好、阻燃性等好。Prof.ShengMeipingNorthwesternPolytechnicalUniversity阻尼合金Prof.ShengMeipingNorthwesternPolytechnicalUniversity其它阻尼材料

玻璃状阻尼陶瓷抗静电阻尼材料抗冲击隔热阻尼材料Prof.ShengMeipingNorthwesternPolytechnicalUniversity阻尼基本结构

分类：离散型的阻尼器件附加型的阻尼结构Prof.ShengMeipingNorthwesternPolytechnicalUniversity离散型的阻尼器件分类：减振器（隔振器）吸振器Prof.ShengMeipingNorthwesternPolytechnicalUniversity附加型的阻尼结构分类：直接黏附的阻尼结构（自由层阻尼、约束层阻尼）（多层约束阻尼、插条式阻尼）直接附加固定的阻尼结构（封沙阻尼、空气挤压薄膜阻尼）直接固定组合的阻尼结构（结合面阻尼）Prof.ShengMeipingNorthwesternPolytechnicalUniversity自由层阻尼H2H1H21基本弹性层阻尼层Prof.ShengMeipingNorthwesternPolytechnicalUniversity自由层阻尼计算Prof.ShengMeipingNorthwesternPolytechnicalUniversity自由层阻尼提高阻尼效果Prof.ShengMeipingNorthwesternPolytechnicalUniversity直接固定组合的阻尼结构减振器（隔振器）NorthwesternPolytechnicalUniversityShengMeiping（结合面阻尼）（结合面阻尼）ShengMeipingShengMeiping粘弹性阻尼材料随频率变化特性ShengMeiping流体的粘滞阻尼产生机理直接固定组合的阻尼结构分类：熔融型、热熔型、自黏型、磁性型。具有隔离层的自由阻尼隔离层的作用：放大变形H2H1H31基本弹性层阻尼层H3隔离层（扩变层）Prof.ShengMeipingNorthwesternPolytechnicalUniversity约束层阻尼H2H1H31基本弹性层约束层H3阻尼层Prof.ShengMeipingNorthwesternPolytechnicalUniversity典型的约束层阻尼结构Prof.ShengMeipingNorthwesternPolytechnicalUniversity约束层阻尼的阻尼效果Prof.ShengMeipingNorthwesternPoly