Recognise the scope of applications of FEA Essay Example

Analyzing and optimize the design of structural element of a crane which is a cantilever.

The study is aimed at a comprehensive method to design an optimally- sized crane or load holding structure. A two dimensional girder beam is opted for to ascertain how geometric changes influence the load holding capacity of the beam. The crane structural element should carry a static vertical loa1d of 1.5kN without yielding.

The classical method of building a lightweight but structurally strong structure forms the numerical iterative technique. In this method, the structural engineer begins with a simple shape, after which he analyzes the design by the use of the FEA software. When the findings are arrived at the load is adjusted and the structure is lightened in some areas and the other area is strengthened. The process of iterative process is continually used till an optimally- sized formation which is able to withstand the load conditions as well as parameters that are obtained. There are unfavorable aspects in utilizing the FEA software for the shape optimization (Lyman. R, 2010). During the process of optimization, structure geometry may experience substantial deformation that ends up in unfeasible structure.

Baseline structure

In order to make simpler this experiment, a 1.5kN cantilever beam with an end load was selected to be the base model. In the beginning an initial, more or less optimized design, the beam’s stress is placed equivalent to provide stress of material.

Based on the potency of material information, the maximum stressed segment of a cantilever which is end-loaded is at fixed end. This moment is normally calculated through the equation

Recognise the scope of applications of FEA

p represents the end load whereas x is the beam’s strength

To get the beam’s height at the fixed end, the equation of maximum stress used is

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Since Recognise the scope of applications of FEA  2

The maximum stress equation the will be

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Which can then be arranged and solved for h to obtain the height is

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the equation above is the initial roughly optimized design that can be generated.

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Figure 1: the baseline structure analysis.

Conclusion

The stress concentration occurs at the load’sapplication as well as at the wall; the unrepresentative variables shall be disregarded. Based on the analysis of the two designs, the optimum stress is adjusted to the fixed end at beam’s top and approximately Recognise the scope of applications of FEA  7

Reference

Lyman. R, 2010,An Introduction to engineering Methods and Data Analysis