Calculation of Composite Loss Factor Based on Iterative MSE Method

Modal strain energy (MSE) method is a widely used approximation approach for parameter calculation of damped composite structures. In this paper, iterative MSE proposed to calculate the loss factor damping structure by considering frequency dependence modulus and viscoelastic materials. The applied free spline, plate constrain plate. results show that: obtains minimum relative errors less than 5% 20% nature factor. influence different material parameters on also discussed. error smaller when using storage measured tensile mode as input parameter. thickness sample measure dynamic has great accuracy. This work provides way fator structures with embedded layer.