A Review on Design and analysis of Rectangular plate for stress relief

Mechanical Design, Design engineering

Almost all structures consist of assembly of simple elements, which are connected to each other by joints. Joints are usually made in steel structures are mechanical fastening using bolts or rivets. In the mechanical fastening, holes are made to place the bolts or rivets; these make the structure weak and susceptible to failure. Plates and shells with different discontinuities of various sizes and shapes are also frequently used as load-bearing members of thin-walled structures in various areas of engineering. In analyzing the strength of those structural members, engineers should take into account the presence of stress concentrators and other factors. Therefore, it is necessary to investigate the state of stress in the fastening plate around the hole for the safety and proper design of such structures. It is very important to understand the behavior of the steel structure with holes or notches. For the solution of such problems several methodologies can be followed, however, all of these methods can be classified as experimental, analytical and numerical method. To understand the behavior of fastening plate, finite element methods are used. The finite element method is a numerical technique for obtaining approximate solution to a wide variety of engineering problems. Stress concentration in plate can be reduced by introducing auxiliary hole. Because of auxiliary hole the flow of the tensile stresses will get smooth and it results in a reduction in stress concentration factor. With such reduction in maximum stress levels, the improvement in fatigue life of a component can be significant.

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