Topology Optimization of Electric Motor Installation
Typ
Examensarbete för masterexamen
Program
Applied mechanics (MPAME), MSc
Publicerad
2021
Författare
Helmfrid, Henrik
Larsson, Joakim
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
Sammanfattning
Early design of a large component which is subjected to a wide range of complex
loads, from loads caused by extreme driving conditions to crash loads, is no easy
task. In the highly competitive automotive industry, reducing weight while retaining
performance is a big priority. This thesis has investigated topology optimization as
a tool to aid early design for an electric engine installation. Topology optimization
has the potential to produce a well defined topology while simultaneously consider
several load cases, design constraints and behavioural constraints.
The load cases investigated in this thesis are engine loads, road induced loads and
crash loads. The crash loads have a non-linear and transient behaviour and it has
been investigated whether they can be applied as linear and static loads in an early
design phase. A superelement has been used to reduce computational time while
still capturing the behaviour from the body in white. As the loads vary greatly in
magnitude, different constraints on different load cases have been investigated.
Through a display of different trial cases a methodology has been produced. Although
more validation is desirable, the results are promising, robust and efficiently generated.
As well as showing where material is needed, topology optimization can also indicate
where material is not needed.
Beskrivning
Ämne/nyckelord
Topology optimization , Crash loads , Superelement , Electric engine installation