Root cause analysis of rattle noise in twin-tube vehicle dampers

The aim of this work is to provide an insight into the rattle noise phenomena occurring in double-tube (twin-tube) vehicle suspension dampers. In the dampers the particular phenomenon results from interactions between the valve(s) and the fluid passing through them. The rattling noise phenomena is known to degrade the vehicle passenger’s perception of ride comfort as well as to influence the performance of the dampers at low and medium speeds in particular. In the paper the authors reveal the results of a DOE (Design of Experiment) study involving several design parameters known to affect rattling occurrence. By running a series of purpose-designed tests the authors investigate not only the contribution of each particular parameter but the interactions between them. The results are presented in the form of pareto charts, main effect plots as well as interaction plots. It is expected the outcome of the analysis will aid in a better comprehension of the phenomena as well the definition of valve configurations to minimize their performance degradation.

The Role of Gendered Entitlement in Understanding Inequality in the Bedroom

Five studies (using U.S. samples) examined whether men’s higher entitlement contributes to a sexual pleasure gap that disadvantages women. Participants indicated that men receive more sexual pleasure from their partners, whereas women provide more pleasure (Study 1a). Participants believed that men have more of a right to experience orgasm in both hook-up and relationship encounters and attributed higher negative affect to the male target than to the female target when the target did not experience an orgasm in a sexual scenario (Study 1b). In concert with the idea that pleasure is a privilege that men are perceived as being more entitled to, participants preferred men’s orgasm when forced to choose between the male and the female partner in an orgasm allocation task (Study 1c) and in an experiment (Study 2). Study 3 examined why people believe that men are more entitled to pleasure than women. Men’s higher sense of entitlement as an obstacle to gender equality in sexuality is discussed.