Challenge

Week - 3 Drop test Challenge

MMukesh Kumar Baraik6 Nov 2022

AIM

Perform Drop test of cellphone.

Create the proper rigid surface mimicking ground.
Create complete simulation file from this to perform drop test.
“INITIAL VELOCITY CARD” is used to define the velocity of cellphone.

OBIECTIVE

Create an input deck from scratch
Create results similar to following situation
The phone should bounce back in the same direction after the impact.
Bounce back along with rotation after the impact

PROCEDURE

Model setup
Run the setup
Results

MODEL SETUP: This is the first step where different inputs is provided in the form of text. These inputs are in the form of “KEYWORD”. In this model setup different inputs are defined as followed

Model: As in the figure the model is defined and properly meshed

Section: In this step each is defined with each section ID respectively. Cell phone is define as solid and ground is define as shell element.

Material: In this step different material is to the model. Arbitrary value of properties taken for both materials.

Part: Since section and material is defined now lets update it on the part.

Fixing the ground: For this boundary condition is defined with constrains.

Initial Velocity: Since the cell phone is falls so it possess some velocity. Initial velocity is defined by calculating the distance between cell phone and ground that is 22mm. Hence the velocity becomes according to ͂= 5mm/s. So -5 mm/s is in the direction of Z axis.

Contact: Since the cell phone is dropped hence both cell phone and ground has contact.So the contact interface is defined where Master segment set id is cell phone and Slave segment set id is ground.