Shape optimization of rubber isolators in automotive cooling modules for the maximization of vibration isolation and fatigue life

Abstract

Rubber isolators are mounted between a cooling module and a carrier to isolate the car body from vibration due to the rotation of the cooling fan. The isolators should be durable against fatigue loads originating from fan rotation and road disturbance. Thus, the design of rubber isolators is required to maximize both vibration isolation and fatigue life. In this study, the shapes of the rubber isolators are optimally designed using a process integration and design optimization (PIDO) tool that integrates the various computer-aided engineering (CAE) tools necessary for vibration and fatigue analyses, automates the analysis procedure and optimizes the design solution. In this study, we use CAE models correlated to the experimental results. A regression-based sequential approximate optimizer incorporating Process Integration, Automation and Optimization (PIAnO), a commercial PIDO tool, is employed to handle numerically noisy responses with respect to the variation in design variables. Using the analysis and design procedure established in this study, we successfully obtained the optimal shapes of the rubber isolators in two different cooling modules; these shapes clearly have better vibration isolation capability and fatigue lives than those of the baseline designs used in industry.

Optimáló módszerek alkalmazhatósága járműipari gumitermékek tervezésében

“…CAE szóftverek közötti kómműnikáció létrehózásávál á kómplex tervezési fólyámát ciklűsideje lecsökkent. A PIAnObán rendelkezésre álló regresszió álápú óptimálizáló eljárás segítségével sikerült á rezgéscsillápító gűmi óptimális álákját meghátárózni két különböző típűsú hűtőrendszerre [21].…”

A new family of strain tensors based on the hyperbolic sine function

“…Worth mentioning that neural networks have played a highlighted role in constitutive modelling. Park et al (2023) used these concepts to predict stress-strain curves. The authors optimized dust covers obtaining a reduced maximum equivalent von Mises stress up to 18 %.…”

Parameter Selection of Local Search Algorithm for Design Optimization of Automotive Rubber Bumper

“…The analysis procedure was automated using a commercial process integration and design optimization tool, therefore the cycle time of the complex analysis was reduced. A regression-based sequential approximate optimizer was used successfully to obtain the optimal shapes of the rubber isolators for two different cooling module types [9].…”