This paper shows the effects of variable stresses acting on structures. the positioning modes of stress raisers. as well as the determination of stress concentration factor and the establishment of some cracking scenarios in order to determine the main characteristics of the crack. The problem of numerical analysis of various engineering problems is not new; it has been used over the ... https://www.roneverhart.com/Med-Mizer-AllCare-Scale-Fits-all-Med-Mizer-AllCare-Beds/