基于竞争失效的硅橡胶拉伸性能衰退建模

王竟成; 周堃; 周俊炎; 周伟建; 赵方超; 孙忠辉; 舒畅

doi:10.7643/issn.1672-9242.2026.03.007

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装备环境工程 ›› 2026, Vol. 23 ›› Issue (3) : 58-65. DOI: 10.7643/issn.1672-9242.2026.03.007

专刊——装备服役环境与性能试验

基于竞争失效的硅橡胶拉伸性能衰退建模

王竟成¹, 周堃^1,*, 周俊炎¹, 周伟建², 赵方超¹, 孙忠辉³, 舒畅¹

作者信息 +

Modelling of Tensile Property Degradation in Silicone Rubber Based on Competitive Failure

WANG Jingcheng¹, ZHOU Kun^1,*, ZHOU Junyan¹, ZHOU Weijian², ZHAO Fangchao¹, SUN Zhonghui³, SHU Chang¹

Author information +

文章历史 +

摘要

目的构建用于描述有后强化效应的数学模型。方法针对橡胶材料在自然贮存环境下性能的特异性变化,采用反比例函数表征性能自然衰减过程,采用变形指数函数表征微结构固化过程,构建复合形式的竞争机理模型,描述橡胶材料性能前期的快速下降、中期的恢复增强与后期缓慢下降等特异性变化过程。结果应用于GD3537硅橡胶的验证结果表明,江津、万宁、漠河试验数据的拟合优度依次递增,分别为89.92%、94.25%、97.32%,节点平均误差分别为4.08%、3.40%、2.37%。采用少量先验数据,该模型能进一步由四参数简化为仅包含衰退因子与强化因子两参数的竞争机理模型,平均拟合优度仍高于90%,且具有易于理解的物理意义。结论该模型用于预测不同地域硅橡胶拉伸性能的变化具有良好的适用性,相对于单一函数模型有显著优势。

Abstract

The work aims to construct a mathematical model for describing the post-reinforcement effect. To address the peculiar performance changes of rubber materials during natural storage environments, an inverse proportional function was employed to characterize the natural performance degradation process and a variant exponential function was adopted to model the microstructural densification process. A composite-form competitive mechanism model was constructed to effectively describe the specific variation processes of rubber material performance, including the rapid decline in the initial stage, recovery and enhancement in the intermediate stage, and the slow decline in the later stage. When applied to GD3537 silicone rubber, the validation results showed that the goodness of fit for the experimental data from Jiangjin, Wanning and Mohe progressively increased, reaching 89.92%, 94.25% and 97.32% respectively, and the average node errors were 4.08%, 3.40% and 2.37%; Using a small amount of prior data, the model could be further simplified from a four-parameter framework to a competition mechanism model comprising only two parameters, the decay factor and the enhancement factor. The average goodness of fit remained above 90%, and the model possessed easily comprehensible physical significance. This model demonstrates excellent applicability in predicting the variations in tensile property of silicone rubber across different regions, and offers significant advantages compared with single-function models.

导出引用

王竟成, 周堃, 周俊炎, 周伟建, 赵方超, 孙忠辉, 舒畅. 基于竞争失效的硅橡胶拉伸性能衰退建模[J]. 装备环境工程. 2026, 23(3): 58-65 https://doi.org/10.7643/issn.1672-9242.2026.03.007

WANG Jingcheng, ZHOU Kun, ZHOU Junyan, ZHOU Weijian, ZHAO Fangchao, SUN Zhonghui, SHU Chang. Modelling of Tensile Property Degradation in Silicone Rubber Based on Competitive Failure[J]. Equipment Environmental Engineering. 2026, 23(3): 58-65 https://doi.org/10.7643/issn.1672-9242.2026.03.007

中图分类号： O212

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