Cell Phone Drop Test
Input Files
Introduction
A common application of explicit analysis is the simulation of drop tests for consumer electronics.
This example is of a simplified representation of a Cell Phone dropped from 1.5m onto a rigid plane.
Options and Keywords Used
Keyword documentation may be found in the reference guide available from
OpenRadioss User Documentation
2nd Order Tetrahedral Elements (/TETRA10)
Rigid wall (/RWALL) (Rigid Plane)
Initial velocity (/INIVEL) for drop velocity
Gravity load (/GRAV)
Tied Interfaces for components (/INTER/TYPE2)
Model Description
The simplified Cell Phone model is constructed from 130000 solid (Hex and Tetra elements)
The ground plane is represented by a rigid wall
Initial velocity is defined to represent a drop height of 1.5m
The phone case is modeled using /MAT/PLAS_TAB (LAW36) with a plastic stress/strain curve, all other parts are modeled as Elastic (/MAT/LAW1)
Conclusion
OpenRadioss is capable of modelling drop test events on electronic devices, aiding the design process and optimisation of phone and case design.