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A Hyper-Elastic Creep Approach and Characterization Analysis for Rubber Vibration Systems
Dingxin Leng1, Kai Xu2, Liping Qin3
1Department of Mechanical and Electrical Engineering, Ocean University of China, Qingdao 266024, China. lengdingxin@126.com.
Polymers
|June 7, 2019
Summary
This study introduces new models to predict rubber creep, a key factor in vibration mitigation systems. The research validates these models using experiments, offering a better understanding of rubber behavior under stress.
Area of Science:
- Materials Science
- Mechanical Engineering
- Polymer Physics
Background:
- Rubber materials are crucial for vibration mitigation applications.
- Creep, a time-dependent deformation, is a critical property impacting rubber performance and potentially causing failures.
- Accurate prediction of creep behavior is essential for reliable engineering design.
Purpose of the Study:
- To develop and validate an engineering approach for evaluating the creep performance of rubber systems.
- To create novel constitutive models for rubber creep using hyper-elasticity and damage mechanics.
- To investigate the influence of time, temperature, and loading on rubber creep behavior.
Main Methods:
- Development of new creep constitutive models by combining hyper-elastic strain energy potential with a time-dependent creep damage function.
- Implementation of the developed constitutive model into finite element analysis (FEA) via a user subroutine.
- Experimental validation using quasi-static and creep tests to verify the numerical predictions.
Main Results:
- The developed constitutive models accurately predict the creep response of rubber vibration devices.
- Time-dependent, temperature-related, and loading-induced creep behaviors, including stress distribution, creep rate, and creep degree, were successfully explored.
- The time-temperature superposition principle was demonstrated for rubber creep.
Conclusions:
- The proposed engineering approach and constitutive models provide a robust framework for analyzing rubber creep.
- This research enhances the understanding of rubber creep mechanisms.
- The findings offer a theoretical foundation for the engineering application of rubbers in vibration mitigation and other fields.
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