A Numerical Study of The Effect Of Crack Tip Geometry On The Near Tip Field In Plastically Compressible Solids

Abstract

The research has indicated the crack tip geometry in a way by which the systematic analysis of the near tip in case of determining the effect on plastically compressible solids is evaluated. The thesis focuses on scientific explanation of crack tip and it explains and analyses formulas of crack surfaces to gain a critical understanding of the topic. It analyses and defines material science at first to provide a clear idea about fatigue which closely relate to the understanding of crack tip. This gives a clear understanding of fatigue as well. Understanding the fracture tip formulae requires an understanding of fatigue loading. it can improve the comprehension of the cracks in different materials. It analyses stress repetition as the major cause of the cracks in materials. Loading cycles are also important in deciding factors responsible for cracks and this thesis also describes the loading cycles. The nature of the metal is also important for the development of cracks in materials. Proper information on these metals is also present in this thesis. Analysis of the factors that causes fatigue and determine the fatigue life of materials is also here in this thesis. newlineIt focuses on three approaches to describe fatigue life such as energy, strain and stress. It also analyses the macroscopic and microscopic approaches to determine the accurate fatigue life of materials. It ultimately follows macro phenomenological method as it is the most beneficial method. The thesis compares the mentioned methods at first to select the best and the most appropriate method for the study newlineExternal factors such as tensile component and their effectiveness on the growth of cracks is evident from the discussion of this thesis. It also states that servicing conditions, surface finishing and shape and size of materials also influence the cracks of materials.. The thesis also uses a finite element analysis method to describe the physical phenomenon cracks and it covers the factors pressure and density of materials.