Research on the Application of Co⁃simulation in the Reduced Design of Automotive Injection Parts

doi:10.19491/j.issn.1001-9278.2021.08.016

Abstract

Abstract:

Reduction design is an effective way to realize the effective utilization of plastic product resources and the prevention and control of pollution sources. However， traditional simulation methods cannot accurately express the material properties of composite injection?molded parts. To improve their simulation accuracy， we designed a guide?rail?reduction structure to ensure that the overall stress level is within a safe range according to the fiber orientation and structural stress of the guide and the distribution situation. This design was based on a multi?scale co?simulation method with the timing chain guide rail of an automobile engine as an example. With this design， the maximum stress was reduced by 12 % and the mass was reduced by 4 %. This realizes the reduction design of the timing chain guide rail of the automobile engine.

Key words: reduction, co?simulation, composite material, injection molding

CLC Number:

TQ 320.66⁺2

ZHA Yan, ZHENG Fangli, XIAO Jian, YANG Weimin, XIE Pengcheng. Research on the Application of Co⁃simulation in the Reduced Design of Automotive Injection Parts[J]. China Plastics, 2021, 35(8): 112-116.

Figures/Tables 10

Fig.1. Co?simulation technology route

Fig.2. Three?dimensional model of automobile engine timing chain guide rails

Fig.3. Process simulation grid of automobile engine timing chain guide rails

Fig.4. Flow front time

Fig.5. Microscopic fiber orientation distribution map

Fig.6. Forces and restraints on the fixed guide rail of the automobile timing chain

Fig.7. Comparison of stress distribution between traditional simulation and co?simulation

Fig.8. Optimized structure of automobile timing chain guide rails

Fig.9. Comparison of stress distribution before and after optimization of timing chain guide rail structure

Fig.10. Deformation cloud diagram of timing chain guide rail structure

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