Multiscale Analysis of the Stress and Burst Speed of a Titanium Matrix Composite Ring Considering the Viscoplasticity of the Matrix

IF 2.3 4区材料科学 Q3 MATERIALS SCIENCE, COMPOSITES

Applied Composite Materials Pub Date : 2024-08-14 DOI:10.1007/s10443-024-10256-7

Hanmin Xiao, Xuming Niu, Zhigang Sun, Yulong Wang, Yingdong Song

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Abstract

A multiscale model is developed for stress analysis and burst speed prediction of a titanium matrix composite (TMC) ring. The proposed multiscale model is based on finite-volume directly averaging micromechanics (FVDAM) to connect the TMC ring and the composite microstructure. Moreover, Bodner-Partom’s constitutive model is adopted to characterise the viscoplasticity of the titanium cladding and the matrix. The effects of viscoplasticity on the mechanical behaviour and burst speed of the TMC ring are presented and discussed for the first time via macromechanical and micromechanical analysis. The results suggest that considering the viscoplasticity of the titanium matrix and cladding leads to a decrease in the burst speed of the TMC ring, especially at elevated temperatures such as 315 ℃ and 482 ℃. Burst rupture of the TMC ring also occurs after a certain time in the load-holding stage at these elevated temperatures and a low, constant angular speed, even though no burst rupture is predicted in the loading stage. Hence, the newly defined load-holding burst speed, which is relative to the load-holding time, is predicted at elevated temperatures. The results of the load-holding burst speed provide more comprehensive information on the safety assessment of a TMC ring at elevated temperatures.

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考虑基体粘弹性的钛基复合材料环应力和爆破速度多尺度分析

为钛基复合材料（TMC）环的应力分析和爆破速度预测建立了一个多尺度模型。所提出的多尺度模型以有限体积直接平均微观力学（FVDAM）为基础，将 TMC 环和复合材料微观结构联系起来。此外，还采用了 Bodner-Partom 构成模型来描述钛包层和基体的粘塑性。通过宏观机械和微观机械分析，首次提出并讨论了粘塑性对 TMC 环的机械性能和爆破速度的影响。结果表明，考虑到钛基体和覆层的粘塑性会降低 TMC 环的爆裂速度，尤其是在 315 ℃ 和 482 ℃ 等高温条件下。在这些高温和低恒定角速度条件下，TMC 环在加载保持阶段经过一段时间后也会发生爆裂，尽管在加载阶段预计不会发生爆裂。因此，新定义的加载保持爆裂速度是相对于加载保持时间而言的，是在高温下预测的。荷载保持爆破速度的结果为 TMC 环在高温下的安全评估提供了更全面的信息。

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来源期刊

Applied Composite Materials 工程技术-材料科学：复合

CiteScore

4.20

自引率

4.30%

发文量

审稿时长

1.6 months

期刊介绍： Applied Composite Materials is an international journal dedicated to the publication of original full-length papers, review articles and short communications of the highest quality that advance the development and application of engineering composite materials. Its articles identify problems that limit the performance and reliability of the composite material and composite part; and propose solutions that lead to innovation in design and the successful exploitation and commercialization of composite materials across the widest spectrum of engineering uses. The main focus is on the quantitative descriptions of material systems and processing routes. Coverage includes management of time-dependent changes in microscopic and macroscopic structure and its exploitation from the material''s conception through to its eventual obsolescence.