Drop test Challenge
AIM
The objective of the assignment is to observe the analysis of drop test a mobile from scratch using the LS DYNA FEM of phone and the drop surface.
PROCEDURE
- SECTION (SECTION_SHELL AND SECTION_SOLID)
shell and solid sections are created for the phone and surface reduced shell, solid elements are used as they economical from computation perspective.
2. MATERIAL SELECTION
MAT_PIECEWISE _LINEAR PLASTICITY(024) Is used for the model
Aluminium is assigned for the phone with high strength here object of interest in only phone.
3. DEFINING THE PART SECTION
After the material and section Id are assigned part is defined for the model from above selection.
INITIAL VELOCITY
Here the velocity is 10m/s.
CONTACT
contact of surface to surface automatic is defined for the mobile drop.
CONTROL TERMINATION
End time is 5ms
Like wise the Database and binary plot are assigned to the mobile to obtain the stresses and curves.
ASCII options are also defines such as RCFORC, GLSTAT,MATSUM etc.
Since the challenge is to get a knowledge of how to define a model from scratch there is not much of any explanation about the FEM model but the we have vonmisess stress and curves as well.
RESULTS
ASCII CURVES
glstat:
