Finite Element Analysis For Structural Engineering

Finite Element Analysis For Structural Engineering – Everything that surrounds us, from roads, bridges, dams, sewers and pipeline systems to buildings, railways and airports, falls into the broad sphere of construction. Over the years, the structures being built around the world have become increasingly complex, as have the methods for analyzing the performance of these structures. Among the most important methods today, ZED stands out.

Finite element analysis (FEA) is a buzzword in the construction industry. It is an extremely useful tool used to numerically approximate complex physical structures that cannot be analyzed by standard mathematical solutions, such as pitch deflection, energy principle of operation, etc. In other words, “unsolvable” engineering problems are solved, even with high precision.

Finite Element Analysis For Structural Engineering

Finite Element Analysis For Structural Engineering

Wondering what these “unsolvable” physical structures are? Well, let’s take for example two identical wooden supports – both are therefore made of the same material and have the same properties. Their location is different.

Structural Finite Element Analysis Software Installation

The first beam is in a fairly theoretical situation, supported at both ends and loaded only at the midspan. Such an example will be considered relatively simple, since the deviation of the central range can be easily calculated.

On the other side, we want to cross a narrow stream with another beam. This relatively simple task now becomes an engineering nightmare in practice, as literally dozens of more or less possible situations can occur, from our wooden beam breaking under too much load or sliding off both ends from the river bank, to years of temperature fluctuations , wind and rain.

Now imagine any construction part in the structure – a building, a bridge, or anything else that falls within the scope of construction. As our example shows, there are many different external influences that affect our wooden beam. The forces here are so enormous that simple mathematical calculations cannot give correct and reliable results. That’s when FEA comes into play.

FEA analysis is performed by creating a mesh, i.e. fragmentation of the structure into a large number of parts (from 1000 to 100,000). Thus, a three-dimensional object turns into a grid of mathematical points that are easy to analyze. Calculations in the form of mathematical equations that predict the behavior of all these parts are carried out for each element separately, and the combination of these separate calculations gives the final result of the entire structure.

Finite Element Analysis Of Structures

Through finite element analysis, structural engineers can simplify a physical structure and thus better understand its behavior.

As mentioned earlier, low-rise construction involves the design and construction processes of a fairly wide range of structures that we occupy, see, traverse and otherwise use on a daily basis. Whether it is a single story house or the next tallest building in the world, there are many very important factors that need to be carefully considered.

Typical areas dealt with by FEA include areas such as structural analysis, heat transfer, mass transfer, electromagnetic potential, and many others. All this is important to consider in the design and planning of any facility, as engineers must determine the behavior of the structure in various situations, more or less predictable.

Finite Element Analysis For Structural Engineering

A building’s performance under loads, gravity, wind, temperature fluctuations, and even natural disasters such as earthquakes or tsunamis is analyzed to determine whether the structure will break, wear, or otherwise be damaged, or whether it will perform as intended.

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Usually, solutions such as the unit load and moment distribution method and the strain energy formula are used to determine the behavior of simpler structures (support beams, girders). However, non-standard objects require in-depth analysis using structural codes. These codes enable more reliable and cheaper tests compared to laboratory experiments and provide a range of acceptable behavior of structures during earthquakes and high wind loads.

One of the main problems associated with construction machinery is earthquakes and various natural disasters in general, both because many buildings are not built according to standards, and because the characteristics of such disasters are difficult and precisely predicted.

With FEA, structural engineers analyze how physical structures behave when subjected to various types of forces, i.e. they determine how the materials from which the building is constructed respond to these influences. Thus, FEA is largely a method of analyzing building materials and their properties. Only recently have studies of material properties begun using multi-scale models that allow the use of microstructures.

Engineers are interested in using FEA to find answers to some of the most familiar questions in the construction industry, some of which include: why concrete cracks, how concrete cracking is related to its composition. Perhaps one day FEA will enable the creation of self-healing material.

Finite Element Analysis (fea)

Hydrology, or the effect of water on materials and soil, is another pressing problem in the construction industry not only in coastal regions, but also in watersheds. Such an analysis uses coastal current simulation. In addition, linear and non-linear analyzes are required to study the river load on the dam and the effect of the conveyance system on the inner and outer surface of the pad, steel lining and concrete contact points.

The use of FEA in the construction industry has expanded in recent years and there is still great potential for this very useful analysis method. Finite element analysis software has recently become available to businesses small and large, increasing the possibilities of building better and smarter buildings in the future, rather than focusing on bulk and strength.

The development of computer-aided design (CAE) also led to the advancement of FEA tools, which are extremely useful for construction today. FEA tools have not only paved the way for more innovative and efficient products, but have also contributed to the development of accurate design methods.

Finite Element Analysis For Structural Engineering

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Safe Finite Element Analysis

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Advice from a software engineer with 8 years of experience Practical advice for anyone looking to advance their career. Cranes and lifting equipment present a unique challenge in finite element analysis. Their enormous size often makes it impossible for users to analyze these structures using conventional solid elements. Instead, support elements should be used to reduce the model to a manageable size. The problem with this approach, however, is in the process of extracting the beam elements from the original solid CAD geometry. Mesh and model resolution are other problems that can arise when the wrong tools are chosen for the job.

The video below shows the considerations that need to be taken into account when preparing for the analysis of large manufactured structures.

Finite Element Analysis For Structural Engineering

Fortunately, ANSYS offers advanced solutions to common problems encountered in a typical FE workflow for cranes and lifting equipment.

What Is Finite Element Analysis And How Is It Done?

The first, often overlooked part of the FEA workflow is cleaning the incoming CAD geometry and simplifying it to reduce modeling time and computational cost. Although some simplification can be made in the CAD system above, ANSYS Spaceclaim Direct Modeler provides a unique set of tools to efficiently convert a generic CAD crane model into a purpose-built FE model.

Beam elements recognized by ANSYS Workbench can only be created using ANSYS Spaceclaim or ANSYS DesignModeler. In particular, ANSYS Spaceclaim has the ability to automatically convert solids to linear bodies by simultaneously obtaining information about the cross section of the solids and applying this information to the resulting linear body.

A common problem arising from this ray separation process is the separation of rays that were originally in contact as solids. Spaceclaim’s intuitive auto-extend feature easily overcomes this problem by merging all nearby beam endpoints that are within a nominal tolerance value.

Watch the video below for a detailed demonstration of how ANSYS SpaceClaim can significantly speed up the process of simplifying large models for FE analysis.

Structural Analysis For Peace Of Mind: A Case Study

Although the total number of nodes would be drastically reduced by converting the solids to beams, the physical size of the structure itself still ensures that the model is no small feat for the mesh.

ANSYS Mechanical implements a number of time-saving features to make the meshing process as fast as possible while still producing high-quality meshes.

The first of these features is the ability to generate a finite element mesh in parallel, which means that all CPU cores can be used to generate the assembly mesh. This feature, which provides up to 27 times the speedup compared to the sequential meshing process, is available to all users, regardless of whether

Finite Element Analysis For Structural Engineering

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