Problem 1: Analysis using ANSYS APDL Script : 3D Analysis of beam with Concentrated Load on Corner

Below there is script of Ansys APDL of 3D analysis of Beam with Concentrated Load on Corner

Firstly copy this script to "Notepad". Go to File Menu, Select "Read Input From". Select file from list.  

/PREP7
ET,1,SOLID186
MP,EX,1,200000000000
MP,PRXY,1,0.3
BLOCK,0,2,0,0.25,0,0.08
ESIZE,0.1
VMESH,1,1
DA,5,UX,0
DA,5,UY,0
DA,5,UZ,0
FK,7,FZ,-1000
/SOLU
SOLVE
/POST1
PLNSOL,U,SUM,1

Displacement

An object have six degree of freedom in space. There are three translational and three rotational Degree of Freedom.

1.       Translation in X (Ux)

2.       Translation in Y (Uy)

3.       Translation in Z (Uz)

4.       Rotation about X (RotX)

5.       Rotation about Y (RotY)

6.       Rotation about Z (RotZ)

We apply support to restrict these DOF. In ANSYS, for Displacement support, we have to select the translational direction to restrict that direction’s movement at a point, edge or face.

Analysis Type – This boundary condition are available in only following ANSYS Analysis type

• Static Structural
• Transient Structural
• Harmonic Response
• Explicit Dynamics
• Modal

Properties of Boundary Condition

Dimensional Analysis

• 3D Simulation: Supported
• 2D Simulation: Supported

Geometry Type

• Solid: Supported
• Surface/Shell: Supported
• Wire body/ line body / Beam: Supported

Topology

• Body: Supported, in Explicit Analysis
• Face: Supported
• Edge: Supported
• Vertex: Supported
• Node: Not Supported

Load in ANSYS Structural

Load in ANSYS Structural

There is list of load available in ANSYS structural analysis

1. Force

2. Pressure

3. Moment

4. Hydrostatic Pressure

5. Pipe Pressure

6. Remote Force

7. Bearing Load

8. Line Pressure

Line Pressure

Line pressure is equal to uniformly distributed load (UDL). It have unit load per unit length. Generally we use unit KN/m.

In ANSYS, for 3D simulation, a line pressure load applied a distributed force on one edge only.

Analysis Type – This boundary condition are available in only following ANSYS Analysis type

• Static Structural
• Transient Structural
• Harmonic Response
• Explicit Dynamics

Properties of Boundary Condition

Dimensional Analysis

• 3D Simulation: Supported
• 2D Simulation: Not Supported

Geometry Type

• Solid: Supported
• Surface/Shell: Supported
• Wire body/ line body / Beam: Supported

Topology

• Body: Not Supported
• Face: Not Supported
• Edge: Supported
• Vertex: Not Supported
• Node: Not Supported

Bearing Load

When a shaft rest on a component, then it exert the load on that component. That load is called bearing load. On the basis of that load, supporting part are known as bearing. Bearing load have two component

• Radial load
• Axial load

Radial load act perpendicular to the axis of rotation, while axial (thrust) load acts parallel to the axis of rotation.

In ANSYS, the bearing load boundary condition analyze radial force only. It will be applied on the interior face of a cylinder in the radial direction. If you will apply a portion of the load to be in axial direction, the solver stops the solution and issues an appropriate error message.

When you apply bearing load on different circle, then the load will be distributed equally as proportion of area.

Analysis Type – This boundary condition are available in only following ANSYS Analysis type

• Static Structural
• Transient Structural
• Harmonic Response

Properties of Boundary Condition

Dimensional Analysis

• 3D Simulation: Supported
• 2D Simulation: Supported

Geometry Type

• Solid: Supported
• Surface/Shell: Not Supported
• Wire body/ line body / Beam: Not Supported

Topology

• Body: Not Supported
• Face: Supported
• Edge: Supported – 2D simulation only
• Vertex: Not Supported
• Node: Not Supported

Remote Force

Remote force is a type of force, which act a force as well as produce some effect of moment. It produce effect on a point of a face or edge without creating point on that.

In ANSYS, the remote force boundary condition is equivalent to a regular force load on a face or a force load on an edge, plus some moment. The advantage of using a remote force is that you can directly specify the location in space from which the force originates. A remote force is classified as a remote boundary condition.

A remote force boundary condition can be applied to a face, edge or vertex of a 3D model or to an edge or vertex of a 2D model.

Analysis Type – This boundary condition are available in only following ANSYS Analysis type

• Static Structural
• Transient Structural
• Harmonic Response
• Rigid Dynamics

Properties of Boundary Condition

Dimensional Analysis

• 3D Simulation: Supported
• 2D Simulation: Supported

Geometry Type

• Solid: Supported
• Surface/Shell: Supported
• Wire body/ line body / Beam: Supported

Topology

• Body: Not Supported
• Face: Not, 3D only
• Edge: Supported
• Vertex: Supported
• Node: Supported

Pipe Pressure

Pipe is generally used for transfer the fluid from one point to another. These fluid exert some pressure on pipe. This is called generally internal pressure. In some region, where we have to deal with snow region or water zone like ocean. In this region, there is generated external pressure, which try to compress the pipe.

In ANSYS, this boundary condition is applied only to pipe in the form of line bodies. This is very useful for pipe design and pipe stress analysis.

Analysis Type – This boundary condition are available in only following ANSYS Analysis type

• Static Structural
• Transient Structural
• Explicit Dynamics
• Harmonic Response

Properties of Boundary Condition

Dimensional Analysis

• 3D Simulation: Supported
• 2D Simulation:  Not Supported

Geometry Type

• Solid: Not Supported
• Surface/Shell: Not Supported
• Wire body/ line body / Beam: Supported, line bodies only

Topology

• Body: Not Supported
• Face: Not Supported
• Edge: Supported
• Vertex: Not Supported
• Node: Not Supported

Force

A force is a push or pull upon an object resulting from the object’s interaction with another object.

F = m x a

Force is measured using Newton.

1 N = 1 kg x m/s²

Force is a vector quantity. It has both magnitude and direction. Because it have direction so we have to apply direction at time of applying load.

Analysis Type – This boundary condition are available in only following ANSYS Analysis type

• Static Structural
• Transient Structural
• Harmonic Response
• Explicit Dynamics

Properties of Boundary Condition

Dimensional Analysis

• 3D Simulation: Supported
• 2D Simulation: Supported, Force load are not supported for 2D axis-symmetric explicit dynamic analysis.

Geometry Type

• Solid: Supported
• Surface/Shell: Supported
• Wire body/ line body / Beam: Supported

Topology

• Body: Not Supported
• Face: Supported

            Force will convert into pressure based on total area of all selected face.  If selected faces are not connected to each other or are from different part then there will be no selection.

• Edge: Supported

             If you select multiple edge, the magnitude of the force is distributed equally over all selected edge. If you select multiple selection without connected to each other, then no selection will occure.

• Vertex: Supported

           If you will select multiple vertices when defining the force, the force magnitude will be distributed evenly across all selected vertices.

• Node: Supported