Finite Element Analysis (FEA) has been developed as an application of the Ritz method in 1943 by R. Courant to obtain about results of the vibration system. By MJ Turner in 1956. Afterwards, RW Clough, HC Martin, an article published by Topper and LJ with this method is that a definition has been established. As basic article "stiffness and deformation of complex structures" tackles the subject.
FEA usually 70 per aerospace, automotive, defense and was limited by the processing capacity of its holdings in the hands of expensive computer nuclear industry. However, because of unbelievable increase in computing power and rapid decline in computer prices currently in FEA calculations may very close to reality. All variables for accurate results can be achieved with today's super computers.
Finite Element Analysis (FEA) What is it?
FEA consists of a material or design of the computer model. The aim is to examine the behavior of gold working conditions in this model. The results, that is used for treating or existing product design. As RMC engineering, we are able to answer the question whether it meets the customer's design or installation the previously mentioned production. To replace the existing product or structure can bring to the position to serve the new working conditions. In case of any structural damage, we may use in order to FEAA belril design changes to the new situation.
Logic Finite Element Analysis What is it?
FEA nodes (node) is called a complex system in which the divide point. : Creating a grid-like structure of the network node (mesh) is called. This network, which determines how the structure behaves under load conditions brll is programmed with structural and material information. It gives the stress levels occurring under the operating conditions of the structure nodes.Stress level and this level of shift and the s high node density in the regions where no stress is more or less intense according to OLN.
So I have a profession that does not know how many friend. My family does not understand. Already I can not tell a stranger at all. "I'm dealing with R & D." I say goes. Tırsıp already in the R & D across the word, you do not investigate how you improve. You know, a word from the R & D space.
Hal being the case, I felt the need to write this article. My goal, as well as to express in writing if what I'm dealing with both issues on the internet (FEM) for simple, Turkish To create a resource.
Sir, I am an engineer, who analyzed by Finite Element Method. I'll explain two elements in this sentence you now.
First 'analysis' Let's start from the word, it is more understandable. An engineer, physics, natural sciences, such as chemistry using tries to bring innovations to make life easier. I also as a mechanical engineer (or trying to be) I have the mission to facilitate the lives of people developing new machines. But of course these, you really do a thorough job alone is difficult. So, there are a lot of sub-tasks.
When designing a machine, you should check your design before production. They may not provide for the requirements which determine the ends of the machine or limits. For example, suppose you have designed a garden staircase is not a machine. Know how based on weight of the staircase, it is a key parameter for your design. According to this parameter, you must specify the dimensions of stairs and stuff. And so, what can you do? In classical methods, mass production before producing prototypes, you can test them on. This method at the beginning of the industrial revolution until today is a classic method of applying all manufacturers. Ladder in the garden of a simple design, a passenger in the vehicle is not necessarily complex prototypes produced and necessary tests are carried out.
Another method that has been developed in the last 30-40 years that this article describes. History actually dates back to the 1942 Finite Element Method (Finite Element Method / FEM), in a virtual environment (computer) allows you to test the scenario that you want to apply to your design. To do this, first of all, you need your design in 3D on the computer boots (or 'reverse engineering' scan design method can transfer the virtual environment).
Feature of the method begins. As you know, any object in the world in the infinite point is located. This method begins by reducing hiring infinite number of finite point in the design. In ' meshing 'it is called. For example, garden Medivir AnIndAki infinite point, you can represent the point to break the finite geometry. This is reduced from the 'nodes (node) "the statement said. These nodes combine the 3, 2 or 1-dimensional shapes are created, it should also " elements (elements) is called.
So be prepared for your design, finite element model. In this model, you can enter the necessary parameters in the desired test computer. For example, a garden stairs dimensional (line-shaped) element with the model and, after entering the model you use materials; Under the stairs, thinking how much weight which places to sit at an angle on a wall that can analyze broken.
To do this in real life, you have to produce stairs per test. This means that cost and labor. However, you can test the computer as you want with a single finite element model, without paying an additional fee (to create a finite element model of course there is a cost if not physically). A ladder, with a variety of materials, you can develop your design in a virtual environment to test various angles.
Perhaps as a ladder or use a calculator in the finite element in a simple machine may not be practical and economical. Automotive, aircraft / aerospace industry, defense industry, in industries such as machinery industry producing complex and expensive machines are used as inevitable. Because the cost of a plane, and when you consider the cost of testing it (passing the million dollars), these tests are countless advantages to virtual environments. For example, you can easily simulate the situation when a plane gravel, with FEM.
I do FEM analysis in the automotive industry in the recent times. There are several kinds of analyzes for a vehicle type. These:
· Durability: controlling the stability of the whole or any part of the vehicle analysis. For example, the installation of which is calculated to react in the vehicle's suspension system.
· Security: Analysis relating to the safety of passengers. For example, vehicle speed in a certain way if you take the car into the wall and the deformation path of the vehicle during this time will be examined.
· Fatigue: rough life of the vehicle's components are calculated. In these analyzes, the weak areas are strengthened.
· Noise and vibration (NVH): It is proposed to keep the level of vibration and noise from the passengers. For example, the sound pressure from the ear of the driver is calculated. I focus on this type of analysis now, I'm already in the NVH team are firm. (This article I will detail in a separate article.)
That can explain Finite Element Method to the simplest form like this. My job is to interpret the results obtained using this method on analysis. Thus, the design, we learn the overall situation, we identify the weak areas, making their designs in the analysis do little to strengthen the region and offer the necessary report and the end of all this. In this process, I'm in charge of all stages.
REFERENCE:
www.solidworks.com
REFERENCE:
www.solidworks.com
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