robustness, Monte Carlo, discharge tube, finite element, reciprocating compressor
The robustness evaluation of compressor components must take into account the variations in the mechanical properties of the material (such as Young's modulus and mass density), geometric parameters (as radius, thickness, length) and loads. Sometimes, the combination of these factors could result in the component failure. The correct way to assess the robustness of the component (considering the parameters variation) is through the statistical analysis using probabilistic design techniques. One methodology is the application of Monte Carlo method to generate random combinations of geometrical, loads and physical parameters that produce the same real component variation. This work shows the application of probabilistic analysis (Monte Carlo method) to estimate the scatter of resonance modes frequency of a discharge tube. The input parameters are the geometry, material properties and damping spring. The alternatives are analyzed by finite element method.