The raw data of analysis of simple harmonic experiment of fiber curve laying laminates

The greater the damping ratio of the composite laminates, the better the vibration damping performance. Fiber curve laying laminates are made in the method of [0/45/<0|15>/-45]s,[0/45/<15|30>/-45]s,[0/45/<30|45>/-45]s, [0/45/<45|60>/-45]s , [0/45/<60|75>/-45]s ,[0/45/<75|90>/-45]s. After simple harmonic vibration analysis of the laminate, the response of the acceleration under the simple harmonic excitation force can be obtained.The raw data of analysis of simple harmonic experiment can be gotten from acceleration sensor and transmitted to the dynamic analyzer. Applying a simple harmonic force to the composite laminate through a simple harmonic exciter, the magnitude of the force is f ( x ) = sin(10Πt ).
Explanation: The txt files with the naming form of 0_15, 15_30, 30_45, 45_60, 60_75, 75_90 are the data from test instrument. The name of each file represents placement method of each fiber curve laying laminate. For example,0_15 means [0/45/<0|15>/-45]s, 15_30 means [0/45/<15|30>/-45]s ,etc.

复合层合板（composite laminates）的阻尼比越大，其减振性能越优异。纤维曲线铺层复合层合板采用如下铺层方式制备：[0/45/<0|15>/-45]s、[0/45/<15|30>/-45]s、[0/45/<30|45>/-45]s、[0/45/<45|60>/-45]s、[0/45/<60|75>/-45]s、[0/45/<75|90>/-45]s。对该层合板开展简谐振动（simple harmonic vibration）分析后，可获得简谐激振力作用下的加速度响应。
简谐实验分析的原始数据由加速度传感器（acceleration sensor）采集，并传输至动态分析仪（dynamic analyzer）。通过简谐激振器（simple harmonic exciter）向复合层合板施加简谐激振力，该力的幅值表达式为$f(x) = sin(10pi t)$。
说明：命名格式为0_15、15_30、30_45、45_60、60_75、75_90的TXT文件为测试仪器采集得到的实验数据，每个文件名对应一种纤维曲线铺层方式。例如，0_15代表[0/45/<0|15>/-45]s，15_30代表[0/45/<15|30>/-45]s，以此类推。