Sensitivity Analysis and Numerical Simulation of

Abstract

This paper presents a prediction of fatigue life sensitivity of Rocket detent catch used on rocket launcher tube for proper design and specify maintenance cycle. Detent catch is subjected to large stress and strain in a short duration time in the operation. The basic fatigue model was developed to predict fatigue compare to the numerical analysis. Many geometric parameters of detent catch were considered to evaluate sensitivity of fatigue life via pareto chart.The result showed compromising value between analytic and simulation. The arm width of detent catch has the most effect to failure cycle while the other features have some significant effect.