噪声与振动控制
譟聲與振動控製
조성여진동공제
NOISE AND VIBRATION CONTROL
2014年
5期
234-238
,共5页
吕平%高金岗%李晶%伯忠维
呂平%高金崗%李晶%伯忠維
려평%고금강%리정%백충유
振动与波%约束阻尼结构%减震降噪%复合损耗因子%振动极值
振動與波%約束阻尼結構%減震降譟%複閤損耗因子%振動極值
진동여파%약속조니결구%감진강조%복합손모인자%진동겁치
vibration and wave%constraint damping structure%damping noise reduction%compound loss factor%vibration extremum
采用自由梁振动法，研究阻尼层厚度、约束层材料及环境温度等三个变量，对约束阻尼结构阻尼性能的影响。结果表明：阻尼层厚度在1 mm～4 mm范围内，约束阻尼结构的阻尼性能随阻尼层厚度的增加而降低；约束层材料分别为钢板、大理石板、砂浆板时，约束阻尼结构的阻尼性能不同；低温、高温环境均使约束阻尼结构阻尼值变小；常温环境下，约束阻尼结构的阻尼值较大，复合损耗因子超过了0.154。
採用自由樑振動法，研究阻尼層厚度、約束層材料及環境溫度等三箇變量，對約束阻尼結構阻尼性能的影響。結果錶明：阻尼層厚度在1 mm～4 mm範圍內，約束阻尼結構的阻尼性能隨阻尼層厚度的增加而降低；約束層材料分彆為鋼闆、大理石闆、砂漿闆時，約束阻尼結構的阻尼性能不同；低溫、高溫環境均使約束阻尼結構阻尼值變小；常溫環境下，約束阻尼結構的阻尼值較大，複閤損耗因子超過瞭0.154。
채용자유량진동법，연구조니층후도、약속층재료급배경온도등삼개변량，대약속조니결구조니성능적영향。결과표명：조니층후도재1 mm～4 mm범위내，약속조니결구적조니성능수조니층후도적증가이강저；약속층재료분별위강판、대리석판、사장판시，약속조니결구적조니성능불동；저온、고온배경균사약속조니결구조니치변소；상온배경하，약속조니결구적조니치교대，복합손모인자초과료0.154。
Influence of the thickness of the damping layer, material of the constraint layer and the environment temperature on the damping performance of constraint damping structures is studied using the free bridge method. The results show that the damping effect of the constraint damping structure decreases with the increasing of the thickness of the damping layer in the range of 1 mm-4 mm of the damping layer thickness. Damping performance of the constraint damping structure is quite different for different constraint layer materials, such as steel plate, marble slab and mortar plate. Low temperature or high temperature environment can also deteriorate the damping performance of the constraint damping structure. The damping performance of the structure is good at the room temperature, and its hybrid loss factor can exceed 0.154.
