DROP TEST SIMULATION ON A MOBILE PHONE BY USING LS DYNA

OBJECTIVE

• Run a drop test simulation on a mobile phone by using LS dyna software and conclude the result.

MODEL

• We have the keyword file containing elements and nodes. Import the keyword file in the ls prepost.

PROCEDURE FOR RUNNING A SIMULATION

• In the model we have three parts as phone, Rigid wall and Top sheet.we can do the analysis with topsheet or without topsheet or consider the topsheet also rigidwall. I am Selecting two parts such as phone and Rigid wall for analysis.

• Now we have to define boundary and set data for phone and Rigidwall Using spc and set node command.

• we have to define section and materials for phone and Rigidwall, for defining section we have to select solid section for both phone and material.

• To define material we have to select piecewise-linear-plasticity(MAT-24) for phone and rigid material(MAT-20) for rigidwall.

• Now we have to define master segment set ID and slave segment set ID Using contact keyword for phone and rigidwall.

• Now we have to define other essential keywords like initial-velocity, contol-termination for animation time of model, and create output file using keyword Database for phone and rigidwall.
• After defining all keywords we have to save keyword file and run the simulation in LS Dyna.
• The link for animation_https://drive.google.com/file/d/1FehhZBDItF2KMt_pEKLjQUyc8kflGI0g/view?usp=sharing

• Running simulation in LS Dyna

RESULT

when phone gets dropped on the rigidwall the phone gets deformed and rigidwall will be remains constant there is no deformation in rigidwall.

GRAPH

Graph shows the vonmises effective stress of phone, after the impact of phone on rigidwall the phone get deformed.

In graph we can clearly see the changes in stress line.

The graph shows the vonmises effective stress of rigidwall, when the phone hits the rigidwall the rigidwall not get deformed.

In graph we can clearly see the constant plot of stress line for rigidwall.