Problem 1: 3D Analysis of beam with Concentrated Load on Corner

Consider the beam Below. There is applied concentrated load on corner. Find out displacement at corner.

Result:- Deflection(total ):

              Deflection( z- direction):-

Solution Using Workbench

Solution Using APDL

Solution Using APDL Script

Solution Comparison

Basic Steps in the Finite Element Method (FEM)

There are three basic phase of Finite Element Analysis (FEA), which are furtherly divide in substep.

Preprocessing Phase

1. Create the geometry and discretize the geometry in to node and elements (Finite Element).
2. Select an element type or shape function to represent the physical behavior of a generated element.
3. Generate the equation for each element.
4. Assemble all the equation to represent the entire problem. Then generate global stiffness matrix.
5. Apply Boundary Condition (Load, Support or Initial Condition).

Solution Phase

1. Now solve the assembled equation to obtain result.

Post processing Phase

1. Find out the result and other important information

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Need of knowledge of FEM for Analysis Software like ANSYS

     The finite element Method (FEM) is a numerical analysis procedure, which is used to solve a large number of engineering problems including stress analysis, heat transfer, mass transfer electromagnetism and fluid flow.

     For effective use of ANSYS Software or other Finite Element Analysis software package, you should have good knowledge of the basic working of FEM. Good knowledge of basic working of FEM and basic engineering subject (like SOM, fluid mechanics etc. ) will lead you in use of FEA software.

     Engineering problems are mathematical models of physical situation or real situation deal in our daily life. Mathematical models are differential equation with a set of corresponding boundary condition and initial conditions. The differential equations are created with the help of basic engineering law and some nature's principles. The governing equations balance the load, mass or energy.

     We can not obtain exact solutions of large number of practical or real world engineering problems. This is due to complex nature of governing differential equations or difficulties which arise from dealing with the boundary and initial conditions.

     While analytical solution provide the exact result of a problem within the system, on other hand numerical solutions approximate exact result only at discrete point, called nodes.

     ANSYS is a very powerful and impressive engineering analysis tool which is used to solve the large number of problems. But a user without a basic understanding of the Finite Element Method is same as a technician with good and impressive tool but do not know inner working of object to be repair.

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Tutorial of Analysis in ANSYS

Hello Friends
There I am going to create a complete tutorial with Theoritical FEM analysis and ANSYS APDL and Workbench. I think you will get Good knowledege and I also think you will enjoy this tutorial.  There is the list of topic Available

• Need of knowledge of FEM for Analysis Software like ANSYS.
• Basic Steps in the Finite Element Method (FEM).

Application of ANSYS Structural Analysis for Mechanical and Civil Engineering

Analysis on Rim

       Finite Element method (FEM) is most common Numerical Analysis Technique. The most common application of FEM is Structural analysis. The term structural (or structure) define not only in civil engineering structures like Building, flyover and bridges and buildings, but in addition armed service, aeronautical, and mechanical structures such as car, ship hulls, fighter plane, and machine housings, as well as mechanical components like pistons, machine components, and tools.
          The seven types of structural analyses offered in the ANSYS. The primary unknowns (nodal degrees of freedom) evaluated during a structural analysis are displacements. Other quantities, such as strains(diifferent type like von-Mises), stresses, and reaction forces, are then derived from the nodal displacements.
          Structural analyses are available in the ANSYS Multiphysics, ANSYS Mechanical, ANSYS Structural, and ANSYS Professional programs .

• Static Analysis--It is used to determine deformation, stresses, safety factor contact stress etc. under static loading conditions. Both linear and nonlinear behavior static analyses. Non-linearity can include malleability, stress stiffening, large deflection, large strain, hyper-elasticity, contact surfaces, and creep.
• Modal Analysis--It is used to calculate the mode shapes and natural frequencies of a structure. Different mode extraction methods are available.
• Harmonic Analysis--It is used to determine the response of a structure to harmonically frequency time-varying loads.
• Transient Dynamic Analysis--It is used to determine the response of a structure to arbitrarily (random) time-varying loads. All non-linearity mentioned under Static Analysis above are allowed.
• Spectrum Analysis--An extension of the modal analysis, used to calculate stresses and strains due to a response spectrum or a PSD input (random vibrations).
• Buckling Analysis--It is used to calculate the buckling loads in column and determine the buckling mode shape of column. Both linear (eigenvalue) buckling and nonlinear buckling analyses are possible.
• Explicit Dynamic Analysis--This type of structural analysis is offered within the ANSYS LS-DYNA program only. ANSYS LS-DYNA provides an interface to the LS-DYNA explicit finite element(FE) program. Explicit dynamic analysis is used to calculate fast solutions for large deformation dynamics and complicated contact problems

          A static structural analysis calculates the effects of steady loading conditions on a structure, while ignoring inertia and damping effects, such as those caused by time-varying loads. A static structural analysis can, however, include steady inertia loads (such as gravity and rotational velocity), and time-varying loads that can be approximated as static equivalent loads (such because the static equivalent wind and seismic loads commonly defined in many building codes).
         Static structural analysis determines the displacements, stresses, strains, and forces in structures or components caused by loads that do not induce significant inertia and damping effects. Steady loading and response conditions are assumed; that is, the loads and also the structure's response are assumed to vary slowly with respect to time. The types of loading that will be applied during a static analysis include:

• Externally applied forces and pressures
• Steady-state inertial forces (such as gravity or move velocity)
• Imposed (nonzero) displacements
• Temperatures (for thermal strain)
• Fluences (for nuclear swelling)

For ANSYS Tutorial Click Here