噪声与振动控制
譟聲與振動控製
조성여진동공제
NOISE AND VIBRATION CONTROL
2015年
4期
38-42
,共5页
振动与波%力传递率%隔振系统%间接估算方法
振動與波%力傳遞率%隔振繫統%間接估算方法
진동여파%력전체솔%격진계통%간접고산방법
vibration and wave%force transmissibility%vibration isolation system%indirect estimation method
工程中,常用振级落差和力传递率来表征隔振系统的隔振效果。振级落差可以由实验测得的隔振器上下端的振动响应,直接计算获取;相比之下,直接测量系统力在实际应用中存在诸多难点。为此,提出一种间接估算方法,以隔振器两端的振动响应作为输入,设备激励力及隔振器传递力,并通过有限元模型对该方法的正确性做出验证。相比于使用力传感器直接进行实验测试,该方法更为简洁,且能够对力传递率做出准确的估算,具有一定的工程实用价值。
工程中,常用振級落差和力傳遞率來錶徵隔振繫統的隔振效果。振級落差可以由實驗測得的隔振器上下耑的振動響應,直接計算穫取;相比之下,直接測量繫統力在實際應用中存在諸多難點。為此,提齣一種間接估算方法,以隔振器兩耑的振動響應作為輸入,設備激勵力及隔振器傳遞力,併通過有限元模型對該方法的正確性做齣驗證。相比于使用力傳感器直接進行實驗測試,該方法更為簡潔,且能夠對力傳遞率做齣準確的估算,具有一定的工程實用價值。
공정중,상용진급락차화력전체솔래표정격진계통적격진효과。진급락차가이유실험측득적격진기상하단적진동향응,직접계산획취;상비지하,직접측량계통력재실제응용중존재제다난점。위차,제출일충간접고산방법,이격진기량단적진동향응작위수입,설비격려력급격진기전체력,병통과유한원모형대해방법적정학성주출험증。상비우사용력전감기직접진행실험측시,해방법경위간길,차능구대력전체솔주출준학적고산,구유일정적공정실용개치。
In engineering, vibration level difference and force transmissibility are usually utilized to evaluate the performance of isolation systems. Vibration level difference can be readily derived from the responses measured at the top and the bottom of the isolator, while there are lots of obstacles in force measurement. In this paper, based on the known vibration responses at both ends of the isolator, an indirect method was proposed that can be applied to obtain the excitation force of the vibrating machines and the force transmission of the isolator. Numerical results are presented to validate the effectiveness of the proposed method. Compared with the direct measurement by means of force sensors, this method is a more concise, and can ensure the accuracy for force transmission estimation.