Battery bin anti-collision beam topological optimization method based on equivalent static load method

Abstract

The invention discloses a battery bin anti-collision beam topological optimization method based on an equivalent static load method. Time steps of equivalent static load extraction points are cleared,the mass of an anti-collision beam is adopted as a target function, displacement is adopted as constraint, and the optimal anti-collision beam structural mode is finally obtained through uninterrupted iterative optimization process. In other technical fields, extraction of equivalent static loads is performed in the whole dynamic process, only first six time steps before collision ending are extracted from the equivalent static loads, the optimization efficiency is improved, and by adopting topological optimization based on a variable density method, the passenger car battery bin anti-collision beam with the optimal structure can be obtained finally.

Description

Technical field:

[0001] The invention relates to a topology optimization method for an anti-collision beam of a battery compartment based on an equivalent static load method, which belongs to the field of mechanical equipment design. Background technique:

[0002] In traffic accidents, side collision is the most frequent accident form, and the number of accidents and deaths caused by side collision is second only to front collision. The national standard "GBT 31498-2015 Electric Vehicle Post-Collision Safety Requirements" puts forward requirements for battery packs on physical protection and electrolyte leakage after collision. Since the power battery is installed between the lower part of the bus chassis and the battery side door, and there is not enough space to generate enough deformation to absorb the collision energy, it is necessary to install an anti-collision beam between the power battery and the battery door to prevent side impact The contact and extrusion of the ...

Images