At the time of their operation, most of the structures experiences forced vibrations. In most of the cases, these vibrations are random in nature. In the case of random vibrations, the amplitude & nature of vibrations is varying with respect to time. The random vibration response spectrum is converted from the time domain to frequency domain using a tool called FFT (Fast Fourier Transform). The resultant data is plotted in the form of PSD (Power Spectral Density) (g2/Hz) versus Frequency (Hz). This data can be provided as input in ANSYS solver in order to perform PSD analysis for the structure.
Renowned Pump Manufacturer from India approached ANALYZER to seek assistance in evaluating the design of their newly developed pump assembly for its reliability being a nuclear power plant product.
The shelter assembly is solve for PSD Analysis. The loading is provided by client itself based on the transportation/operating conditions of the shelter assembly. Considering the application, acceptable limit of accuracy is set for PSD analysis. The shelter assembly is evaluated for induced stresses.
The results showed that the induced stresses are much below the allowable limits. Thus the shelter assembly design was predicted to be safe even in severe operating conditions during its service life.