Vehicle window sealing system equivalent modeling and rapid evaluation method

Abstract

The present invention relates to a vehicle window sealing system equivalent modeling and rapid evaluation method. The method comprises the following steps: 1) carrying out finite element analysis of a compressive load according to a preliminary designed two-dimensional cross-section of a sealing strip, and obtaining a CLD curve of the inner and outer lip of the sealing strip; 2) making a window sealing system into an equivalent discrete non-linear stiffness spring element, and establishing a sealing strip equivalent dynamics model; 3) establishing a three-dimension model of a vehicle window sheet metal and a vehicle window lifter, and combining with the sealing strip equivalent dynamics model to establish a complete vehicle window lifter kinematics model; and 4) by kinetic analysis on the complete vehicle window lifter kinematics model, obtaining a support force variation curve of the sealing strip to a vehicle window, and a balance coefficient of the vehicle window under the constraint of the sealing strip, and combining the CLD curve of the inner and outer lip of the sealing strip to output a rapid evaluation result of the sealing strip design. Compared with the prior art, the method disclosed by the present invention has advantages of rapid and overall evaluation, being simple and efficient, cost reduction, and the like.

Description

technical field [0001] The invention relates to the technical field of digital design and manufacture of a car window sealing system, in particular to an equivalent modeling and rapid evaluation method of a car window sealing system. Background technique [0002] The window sealing system includes metal lifting mechanisms and window sheet metal, as well as non-metallic window glass and sealing strips. It is an important dynamic sealing system through the frequent lifting of the windows to achieve vision adjustment and ventilation and heat exchange. The rapid increase in vehicle speed and model upgrades have higher design requirements for the intuitive perception of car quality such as smooth window lifts and high-speed quietness, and higher requirements for the design of the window sealing system. [0003] The support force of the window seal to the window glass is one of the important indicators for the design of the seal. If the compression load is too small, the sealing...

AI Technical Summary

Problems solved by technology

Because this traditional method only conducts design verification on two-dimensional cross-sections, it often needs to go through multiple cross-section analysis-loading test cycles to finally determine the design of the sealing strip, which has the disadvantages of long cycle time and high cost.

Images