Menu

Executive Programs

Workshops

Projects

Blogs

Careers

Placements

Student Reviews


For Business


More

Academic Training

Informative Articles

Find Jobs

We are Hiring!


All Courses

Choose a category

Loading...

All Courses

All Courses

logo

Loading...
Executive Programs
Workshops
For Business

Success Stories

Placements

Student Reviews

More

Projects

Blogs

Academic Training

Find Jobs

Informative Articles

We're Hiring!

phone+91 9342691281Log in
  1. Home/
  2. ARAVIND M/
  3. Week - 5 - Modelling Spotwelds

Week - 5 - Modelling Spotwelds

MODELLING SPOTWELD AIM             In this assignment we have to model spot-weld in 1D and 3D Hexa elements in a given assembly in Ls-prepost and stimulate them with required boundary conditions and compare the results. PROCEDURE First import the .k file into Ls-prepost,…

    • ARAVIND M

      updated on 16 Jan 2021

    MODELLING SPOTWELD

    AIM

                In this assignment we have to model spot-weld in 1D and 3D Hexa elements in a given assembly in Ls-prepost and stimulate them with required boundary conditions and compare the results.

    PROCEDURE

    • First import the .k file into Ls-prepost, then change the title by model – keywords – title.

    • Create rigid wall by content – rigid – planar – select the node and give the distance in required direction, the normal of the rigid wall must be opposite to the direction of the assembly.

    • Create beam and solid weld elements by mesh – eledit – create – shell/hexa – select the nodes.

    • Create section id for the solid/shell elements by model – keyword – section – solid/shell, and assign the ELFORM value 16 for assembly, 9 for beam weld and 2 for solid weld.

    • Then create the material mat 001 elastic for top and bottom components amd mat 100 for spot weld and enter the Tfail value as 2.5.

    • Then assign the sec and material to the part by model – keyword – part, change the title for the solid elements and assign the materials.

    • Then create the initial velocity by model – content – initial – velocity select the hole part of the phone and give the velocity in X- direction as 10mm/ms.

    • Then create contact as automatic single surface contact, by model – keywords – contact. Assign the top and bottom components as elements to slave nodes.

     

     

    • Then create contact for beam weld elements as tied_shell_edge_to_surface and assign weld elements as slave and top & bottom components as master.

    • then create contact for solid weld elements as contact_spotweld and assign weld elements as slave and top & bottom components as master.

    • Then create the cross-section by model – content – set create node set and shell set. (node set should be middle of the shell set)

    • Then create control energy and termination by model – keywords – control – energy, cross-sectional & termination.

    • Then for the results go to model – keywords – database – ASCII_option, cross-sectional & Binary D3 plot.

    RESULTS

    • Then run the stimulation on Ls-Dyna solver by importing.k file into it.
    • Then the results are compared between beam and solid weld elements.

    VON-MISES

    From the above snap it clearly noted beam weld has 5.770e+02 MPa force where the solid elements has less von-mises stress as 4.347e+02 MPa.

    MATERIAL ENERGY

    In both the cases the internal energy increase and kinetic energy drops after 2ms that is after the impact on the rigid wall.

    CROSS-SECTIONAL FORCE

    From the above graph plotted between time and stress which shows the cross-sectionnal force in X-direction beam elements experience more force 986e+3N than the beamelements 2.20e+03N. 

    AXIAL FORCE

    The axial force is a force acting parallel along X-direction, Axial force in beam is more 1.76e+03N at 2.48ms than the beam elements 1.02e+03N at 2.06 ms.

    SHEAR FORCE

    The shear force is a force acting perpendicular along X-direction, shear force in beam is less 1.62+03N at 2.09ms than the beam elements 2.75e+03N at 2.18 ms.

    CONCLUSION

    From the above results the shear force is more dominant factor for the faliure of the welds hence it can performance better in solid weld elements because the force is higher than beam elements, and also in axial loading solid element can carry load in more direction and the beam elements shows elongation where in solid there is no elongation.

    Leave a comment

    Thanks for choosing to leave a comment. Please keep in mind that all the comments are moderated as per our comment policy, and your email will not be published for privacy reasons. Please leave a personal & meaningful conversation.

    Please  login to add a comment

    Other comments...

    No comments yet!
    Be the first to add a comment

    Read more Projects by ARAVIND M (61)

    Week 6 - Data analysis

    Objective:

    DATA ANALYSIS USING PYTHON AIM             In this challenge, we have to do data analysis for a given data using python and extract the data and graph that user want by REPL method. REPL             REPL stands…

    calendar

    25 Apr 2021 01:56 PM IST

    • PYTHON
    Read more

    Week 5 - Curve fitting

    Objective:

    CURVE FITTING USING PYTHON AIM                In this challenge, we have to write a program for curve fitting using python. CURVE FITTING             Curve fitting is the process of constructing…

    calendar

    25 Apr 2021 01:25 PM IST

    • PYTHON
    Read more

    Week 3 - Solving second order ODEs

    Objective:

    SOLVING SECOND ORDER EQUATION USING PYTHONAIM               Using second ODE to describe the transient behaviour of a system of simple pendulum on python scripting.OBJECTIVE            In Engineering,…

    calendar

    19 Apr 2021 02:55 PM IST

    • PYTHON
    Read more

    Week 2 Air standard Cycle

    Objective:

    AIR STANDARD CYCLE USING PYTHON AIM             To write a program in python to solve the otto cycle and plot the graph. OBJECTIVE To solve different state variables in the otto cycle and plot p-v diagram. To calculate thermal efficiency for the given parameters in…

    calendar

    13 Apr 2021 01:33 PM IST

    • PYTHON
    Read more

    Schedule a counselling session

    Please enter your name
    Please enter a valid email
    Please enter a valid number

    Related Courses

    coursecardcoursetype

    Accelerated Career Program in Embedded Systems (On-Campus) - Powered by NASSCOM

    Recently launched

    0 Hours of Content

    coursecard

    5G Protocol and Testing

    Recently launched

    4 Hours of Content

    coursecard

    Automotive Cybersecurity

    Recently launched

    9 Hours of Content

    coursecardcoursetype

    Pre-Graduate Program in Bioengineering and Medical Devices

    Recently launched

    90 Hours of Content

    coursecardcoursetype

    Pre-Graduate Program in 5G Design and Development

    Recently launched

    49 Hours of Content

    Schedule a counselling session

    Please enter your name
    Please enter a valid email
    Please enter a valid number

                Do You Want To Showcase Your Technical Skills?
                Sign-Up for our projects.