FEA, THAT NEEDS TO UNDERSTAND...

 Hey guys, Today we are going to talk about meshing, I know another meshing one blog yes... I know we already discuss some meshing concept but today we are exploring it a bit more... so let's start  We know why we carry out meshing and what its advantages also we had discussed about the DOF and nodes, elements blah blah... if you don't read it I am providing the link here check it out https://understandingfea.blogspot.com/2020/10/meshing-fem-and-types-of-elements.html So the basic purpose to carry out is to make calculations at finite points. We know that we have to carry out meshing for the various geometries and geometry can be different and complex.                     Then what to do in such cases, Lets explore it we know that our FEA problem which we are solving is needed to be easy and not very much complex and, if you have a complex problem then we need to identify how can we simplify it... We can simplify the ...

 Hey guys Today we are talking about the most important topic i.e. the nonlinearity of FEA.  What is non-lineaities? We have talked about linear and non-linear analysis. And how they differentiate from each other. Every problem that we encountered in real life is non-linear. But for the sake of simplifying the problem, we do it with the linear analysis.  What is the linear analysis means? In which for solving any type of problem we considered that the force and the displacement (As an output) are changing linearly. As in the linear analysis the stiffness of matrix doest change it remains constant.                As in the non-linear analysis, there are different types of non-linear analysis. The nonlinearities vary or it depends on various factors there are various types of non-linearites such as a 1) Material nonlinearity 2) Geometric nonlinearity 3) Contact nonlinearity   1) Material nonlinearity As in Material nonlinear...

 Hey guys, Let's talk about the meshing of FEA, FEM, and its types. That is really an important concept of FEA that every FEA analyst needs to know.                 The basic theme for the generation of mesh is to make the calculation at the finite no of point and then interpolate the result at the entire surface and domain.  For example the above dig. shows that if we have a surface and want to calculate the result then we cant calculate it bcoz of where in the domain having an infinite no of points and each point having 6 dof so the total equation created is infinite. In another way in dig 2 we are dividing the domain in some finite no of points and the equation generated is 48.               The Finite Element Method reduces dof from an infinite no of points to a finite no of points with the help of discretization i.e. meshing (Nodes & Elements) All calculation made at nodes and th...

 Hey guys, Today we are talking about the degrees of freedom which is dof''s. The dof is the freedom of any point that it wants to move in a particular direction. T he maximum number of logically independent values, which are values that have the  freedom  to vary. In the CAD or designing of any component, it is very important to understand about the dof. If we don't consider it may lead to failure. Also in FEA, the dof is very important in terms of calculating the result of getting the proper values from the mesh. The principle of meshing works on the dof. In which each node has its own dof. We will be going to talk about the mesh and why mesh is important and how it works later on in detail. But in short, the mesh is the important part in which it divides the modal into the element and nodes so that at each node we can extract the result from it. The nodes are points created by elements. Going back to the dof, each node has its own dof. We know that we have the 12 no of...

 Hey guys,  Let's talk about some important thing which is the stiffness matrix. The stiffness matrix is used in every type of analysis either it is static or dynamic. So what is the stiffness matrix as its word suggest the stiffness of an object or stiffness of anything  The stiffness matrix is a matrix which is the stiffness of any elements or the structure which is expressed in the matrix form for solving the governing equation of the problem to get the solution. The stiffness matrix is the key to the treasure to the FEA. Bcoz if there is no stiffness matrix associated with your problem then we cant solve the FEA problem. The stiffness matrix is denoted by this [k] . The matrix mainly depends on the properties which are the material and the geometric structure. For deriving the matrix for any geometry or shape of elements there are three types of methods which is... 1. Direct method: The  direct method is easy to understand but difficult to program so the commerc...

 Hey guys, Today we are talking about the most important topic, which is damping... Previously, we talked about the static, Transient, & Dynamic analysis, now we know that the damping effect is considered in the transient and dynamic analysis. So, what is damping? The important thing to know, that damping can be good as well as bad according to your use of the system.              The damping is such a phenomenon when the displacement of any object happens there is damping that get produced. A system can be so damped that it cannot vibrate. Actually friction is also a type of damping. The damping force dissipates the energy in the material generally in the internal thermal energy. Talking about the static analysis where if the object is subjected to a certain load the displacement is happening in which we cannot consider the damping effect for the object.              But if talking about ...

 Hey Guys,  Today we are talking about the Inertia of relief analysis. what is Inertia relief analysis? The inertia relief analysis is such a type of analysis in which the analysis of unconstrained bodies is done. So what is mean of unconstrained bodies, the bodies which have not any degrees of freedom fix or all dof's are free is known as unconstrained bodies. In real practises there are various unconstrained bodies are there. For doing such types of analysis we apply the fixed support or the remote displacement but in real conditions, they are not subjected to any of the constrained motion. So for evaluating these results we have to use the Inertia relief analysis           The procedure of Inertia Relief analysis is to balance externally applied forces so that bodies with no or partial boundary conditions remain in the equilibrium position.    Let us assume the case of an Aeroplane in cruise- When the aeroplane is on the ground we hav...