Citation:
Zakaria Mouti, Keith Westwood, Darren Long and James Njuguna. Finite element analysis of localised impact loading on short glass
fibrereinforced polyamide engine oil pan subjected to low velocity impact from
flying projectiles. 8th European LS-DYNA® Users Conference, Strasbourg, 23-24 May, 2011
Abstract:
This paper investigates low velocity impact involving a glass fibre-reinforced
polyamide engine oil pan as part of a complete new development of thermoplastic
components. The assessment of the impact resistance has driven the need to
employ LS DYNA for finite element modelling in order to virtually benchmark and
predict the strength and fracture behaviour of stressed plastic parts. In order
to develop a reliable predictive capability and to validate simulations,
complete components were manufactured by injection moulding techniques for the
experimental samples. Low velocity impact investigations were carried out using
a gas gun and a falling weight tester in order to simulate impact events to
which the oil pan is subjected whilst in operational service. This was intended
to point out damage tolerance and failure mechanisms likely to occur in the
structure. The study results show the significant contribution of the design in
terms of shock absorption. Specific oil pan design with protective ribbing
combined with a superior material considerably improves the impact resistance.
The paper provides results and discussions on experimental and finite element
analysis investigations before concluding with some remarks.