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Group 1-29
Project Title Studying the effect of massive colliding steel balls on a thin sheet of material
Synopsis If a sheet of material is placed in between a pair of colliding steel balls, deformations or
holes may be observed after th collision.We investigated the various factors,such as the
type of materials, and the height of which the ball is dropped, and how they would
affect the deformation or holes formed.
Through theroretical analysis we also understood why did these deformations and holes

formed,and provided close estimations to calculate the size of holes or deformations.
The knowledge on the deformation of materials
upon impact is important in manufacturing of packaging of materials.
These informations and also aid in design of protective materials or strong packagings.
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Team Members
(Names & Classes)
Group Leader:
Chen Jiakai 4S1
Group Member/s:
Tan Zi Yi 4S1