A lightweight forward design method and
system of automobile
structure based on multi-performance constraints is disclosed. The finite
element analysis model of automobile body structure is established by using finite
element modeling technology. The typical force transfer path of automobile structure is identified by using
topology optimization technology and the bending /
torsional rigidity performance of automobile body is taken as constrained working condition, and lightweight design in conceptual stage is carried out. Then the
strain energy analysis and the material thickness
sensitivity analysis are carried out by using the
sensitivity analysis technology, and the weak links and the critical design area of the vehicle body are found.
Topography optimization is used to improve vehicle performance; Finally, based on
business integration optimization
software, The multi-performance target of automobile body is analyzed by integrated
simulation, and the correlation between design parameters and performance, performance and performance is studied by using DOE sampling and
data mining technology, and then the lightweight design of automobile body structure considering multi-disciplinary performance is carried out, which reduces the quality of automobile body structure, improves product performance, shortens R D and manufacturing cycle, and saves cost.