Loading conditions and complex geometry have led the cylinder heads to become the most challenging parts of diesel engines. One of the most important durability problems in diesel engines is due to the cracks valves bridge area. The purpose of this study is a thermo-mechanical analysis of cylinder heads of diesel engines using a two-layer viscoplasticity model. The results of the thermo-mechani...

In this work, a simple, inexpensive, lightweight, low energy consumption mechanical extractor was developed to operate. The puller screw shaft first designed and followed by the nut then its collar top. Non-conventional shapes were assumed for collars handles. Finite element analysis used evaluate stress in arm which had complex shapes. reveals that pullers are less likely fail under design wor...