Essays about: "chalmers formula"

Found 2 essays containing the words chalmers formula.

1. 1. Transient and Spectral Fatigue Analysis for Random Base Excitation

   University essay from

   Author : Albin Bäckstrand; Prithviraj Madhava Acharya; [2019-09-16T10:43:03Z 2019-09-16T10:43:03Z 2019 2019]
   Keywords : Spectral fatigue analysis; transient fatigue analysis; power spectral density PSD ; transfer function; base excitation; Dirlik s empirical formula; equivalent von Mises stress EVMS ; rainflow count; Wang and Brown s method; Dang Van equivalent stress; Palmgren-Miner rule;

   Abstract : This thesis work gives an insight on how to estimate the fatigue damage using transient and spectral fatigue analysis for both uniaxial and multiaxial stress states in case of random vibration base excitation. The transient method involves a rainflow count algorithm that counts the number of cycles causing the fatigue damage, while the spectral method is based on probabilistic assumptions from which an expected value of fatigue damage can be estimated. READ MORE

3. 2. An analytical and numerical study of droplet formation and break-off for jetting of dense suspensions

   University essay from KTH/Mekanik

   Author : Kurian Jomy Vachaparambil; [2016]
   Keywords : Thixotropy; Jetting; COMSOL; Solder paste laments;

   Abstract : The jet printing of solder paste from a uid dynamics perspective involves viscosity change due to varying shear rate and eventual break o of the ejected solder paste droplet from the uid in the printer head. The ability to model the jetting process in a simulation package is important as it can be used as a tool for future development of the jetting device. READ MORE