Autocad fem

It is very easily and conveniently. The results of calculations can be saved in dwg file together with the main drawing. It is fantastic, but it is true! Moreover, there is one more exciting thing. You can use it for educational and commercial purposes.

Of course, AutoFEM Analysis Lite has some limitations related to the calculation capabilities, but they do not deal with the number of degrees of freedoms, as it normally occurs.

This means that you can solve practical problems of your product. It is easy and worth doing! It is impossible to imagine a modern mechanical engineer which has no access to the finite-element static analysis. One of these methods is called the Finite Element Analysis. The knowledge gained from this stress rating can lead to changing the structure in certain areas, which in turn necessitates changes to the design.

The Finite Element Analysis FEA function is a powerful procedure for obtaining numerical solutions to stability problems in all kinds of malleable and elastic areas. FEA subdivides the area into triangles and then approximates the solution using numerical polynomial interpolation. The finite element method outputs approximate solutions. High profitability needs high quality products.

Thus, product development engineers, QA engineers, reliability engineers, design engineers, etc. Some of the challenges include performing tests to make sure the parts and materials of their products behave as expected. That includes reactions to different situations including forces, vibrations and heat. In the past, these tests were performed by creating a prototype of the product and performing the tests on it. However, creating prototypes and testing on them usually takes time and results in higher costs.

Using Finite Element Analysis, therefore, aligns very well with lean manufacturing methods in order to maximise productivity and minimise waste. FEM is a numerical method that uses mathematical models to solve complex structural engineering problems represented by differential equations.

Engineers use Finite Element Analysis in the design process. Instead of making prototypes for real-life experiments, they turn to Finite Element Analysis software. Applying it during the design phase helps to optimise machinery parts to make better products and deliver them faster. There are different stages in the design process. One of them is testing out solutions to see if they meet the requirements and expected working behaviour. First, the problem is defined.

Market research is conducted in order to identify and specify the requirements. Then brainstorming and evaluation of different possibilities takes place. This includes modelling different parts and even whole assemblies by means of CAD software for better visualisation. Fortunately, current CAD software usually comes in the form of a package that includes other modules beyond modelling. Many of them already include FEA capabilities. Therefore, the models made in the previous stages of the design process can be used to test the possible solution.

If necessary, redesigning the parts based on data and test results takes place. Of course, it is also possible to export the models to another simulation software if necessary. Specialised software gives more accurate results and has more functions. For example, such optimisation is necessary for large-batch production. Over-dimensioning results in unnecessary costs that accumulate with series production.

It includes linear static and non-linear quasi-static situations. Some of the most common scenarios covered by static analysis include linear stress analysis, deformation analysis and thermal analysis. For instance, for the problem related to static strength, the system of equations can be written in a matrix form:.

It is this vector which is to be determined. Tetrahedron can approximate arbitrarily complex geometry of the simulated real object. A special generator of finite element mesh creates a tetrahedral finite element mesh for three-dimensional solid model of a product, made in AutoCAD.

After building the finite element mesh and the computation of local stiffness matrices of each finite element it is possible to algebraically and topologically sum up all the local stiffness matrix elements and to construct the global stiffness matrix of the assembly. The result for example, stress static analysis is a system of equations of the form.

Processor of AutoFEM Analysis performs the generation of the global stiffness matrix and solution of algebraic equations. There are some methods for solving algebraic equations. One of the most famous and used is Gauss method or its modifications such as Cholesky method.