00 TJoint VWeld Instructions

Visual-WELD v6.5

Tutorial 00: ARC Welding of a T-Joint

This working document and related know-how herein provided by ESI Group subject to contractual conditions are to remain confidential. The client shall not disclose the documentation and/or related know-how in whole or in part to any third party without the prior written permission of ESI Group. Copyright © ESI Group, 2010. All rights reserved.

ESI Group Learning Solutions Visual-WELD T-Joint Tutorial 2 August 2010

Description: This tutorial will describe how to setup a model for welding simulation. This example is for the ARC welding of a T-Joint. It will illustrate how to define the weld problem and submit the job for results analysis.

Table of Contents Starting the Welding Project ............................................................................. 3 Welding Advisor ................................................................................................. 3

Project Description ....................................................................................................................... 3 Setting the Global Parameter ...................................................................................................... 4 Component Properties ................................................................................................................. 5 Welding Process .......................................................................................................................... 6 Cooling Condition ........................................................................................................................ 8 Clamping Conditions .................................................................................................................... 9 Loads and Deformations ............................................................................................................ 11 Solution Parameters .................................................................................................................. 11

Job Submission................................................................................................ 12


Starting the Welding Project • Open Visual-WELD 6.5. • In the main menu, select File > Open.

• Select TJOINT_DATA30.ASC and press Open.

Welding Advisor • In the main menu, select Welding > Welding Advisor.

• As a result the Welding Advisor is activated with Step 1 as “Project Description”

Project Description • Input the project details as following:

o *Name: TJOINT

o Title: ARC Welding of a T-Joint

o *Working directory: Browse and select (Create a new folder if necessary)

o General description: Example on simultaneous double T-joint ARC welding

(symmetry condition applied)

o Material description: S355 structural steel

• Once the mandatory “*” fields are filled, the next available step(s), in orange, are enabled

to move further. Active steps are shown in blue and completed steps are shown in green.

• Click on the Step 2 button or use the Next Arrow to proceed to next step.


Setting the Global Parameter • By default, Welding Advisor automatically identifies the Computation Option needed

based on the Mesh model and sets it. However the user can change and set the required

option accordingly. The Computation Option used here will be “Solid”.

• Proceed to Step .


Component Properties

• Click on the list part of the button to post a list of components.

• Highlight PLATE1_COMPO and PLATE2_COMPO and press OK.

• For the Material, choose S355J2G3 from the pull down menu and click Add to assign.

• Now choose Joints with Filler radio to assign materials to filler materials.

• Click on the list part of the button to post a list of joints. Select J01_WIRE and press OK.

• For the Material, choose S355J2G3 from the pull down menu.

• Click on Add to complete the material assignment for the Joints.



Welding Process • Choose *Process type as General Arc.

• Set the Energy / unit Length of Weld: units as J/mm and Velocity: units as mm/sec.

• Click on to post a list of collectors. Select J01_PATH and press OK.

• As a result all the corresponding entities such as Filler Material, Welding Group, etc.

related to this weld line are automatically filled based on their naming convention

• Press Next >> or select the Weld Pool tab.

• Select ARC from drop down menu as Heat Source:

• Input following values for:

o *Velocity: 33.310 o *Start Time: 0.000 o End Time: 1.441 (automatically calculated based on Weld line length)

• Input *Estimated values for: o Length: 9.000 ( mm units )

o Width: 5.000 ( mm units )

o Penetration: 1.500 ( mm units )


• Press Next >> or select the Energy Tab.

• Input following values for:

o *Energy/Unit length: 280.000 o *Efficiency: 1.000 o Power Ratio: 1.200 o Length Ratio: 0.500

• Toggle on Start/End Energy Ramp and input the following values:

o *Beginning of Weld Length of Ramp: 9.000 Energy Factor: 1.500

o *Termination of Weld Length of Ramp: 1.000 Energy Factor: 1.000

• Click on the Add button to update the Weld Line.



Cooling Condition

• Click on the list part of the button, choose AIR and press OK.

• Choose the *Medium as Free Air Cooling and input 20 as the Ambient Temp.

• Click on the Add button to update the heat exchange condition.



Clamping Conditions • Click on the list part of the button, choose CLAMP_01 and press OK.

• Choose the Rigid radio option as the clamp type.

• Toggle on Y and Z under Rigid in Direction: and click on the Add button.

• Click on the list part of the button again and select CLAMP_02.

• Choose the Rigid radio option as the clamp type.

• Only toggle on Y under Rigid in Direction: and click on the Add button.

• Repeat these steps for: o CLAMP_03: toggle on Symmetry and press Add.

o CLAMP_04: toggle on Elastic and, under Elastic Stiffness, set In Plane: 10.000 and Perpendicular to Plane: 1000.000. Press Add.

o CLAMP_05: toggle on Elastic and, under Elastic Stiffness, set In Plane: 10.000 and Perpendicular to Plane: 1000.000. Press Add.

• Once all the clamps are defined, click on the list part of the button, highlight all five clamps on the list and press OK.

• Keep the default Name: as it is

• Input *Start time: as 0.0

• Input *End time: as 600.0


• Click on the Add button to update the Clamping Conditions.

• Click on the button again and select CLAMP_01, CLAMP_02 and CLAMP_03.




• Click on the button and select CLAMP_01, CLAMP_02 and CLAMP_03 again.




• Click on the Add button to update the Clamping Conditions.



Loads and Deformations • The present problem doesn’t involve any loading conditions.


Solution Parameters • By default both of the Analysis types are toggled on, but the Mechanical analysis can be

toggled off if it is not needed. In this example, both Thermo-Metallurgical and Mechanical analyses will be done.

• Input *Initial Temperature: as 20.

• Click on Advanced arrows to view more options. These will be left at their default settings for this example.

• Click on Generate Input Data to export all the project files in the project directory.

• This might take a few moments, so check for messages in the console.

• Once Generate Input Data is clicked, a *.vdb file is generated. This file contains all the information related to project and should be used for any modification related to project. It is also used as a source file for Solver Manager to solve the project.


Job Submission • Go to the main menu and select Welding > Solution Manager.

• Select a project file. This should be TJOINT.vdb (the same name used in Step 1).

• Check all boxes under “Heat Transfer” and “Mechanical” and press Compute.

• Note: Depending on the system capabilities the solution may take some time to get all the results.

• Cells will turn Green when all the results for that process are computed. Blue indicates a running job. Any errors are shown in Orange. Use the button to view the log files.

• Press Kill Process to end the processing of results at any time.

Documents

00 TJoint VWeld Instructions