| 轮胎模具底座拓扑优化 |
| Topology Optimization on Tire Mold Base |
| 投稿时间：2019-05-14 修订日期：2019-05-14 |
| DOI：10.12136/j.issn.1000-890X.2020.02.0145 |
| 中文关键词: 轮胎模具 模具底座 拓扑优化 变密度法 应力 疲劳寿命 传热性能 |
| 英文关键词: tire mold mold base topology optimization variable density method stress fatigue life heat transfer performance |
| 基金项目: |
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| 中文摘要: |
| 以结构总体积减小30%为设计变量、以优化域内柔度最小化为目标函数,建立轮胎模具底座（间称底座）周期性拓扑优化数学模型。采用变密度法对底座进行拓扑优化，得出优化模型，模拟分析优化前后底座的应力、疲劳寿命和传热性能。结果表明，优化后底座的最大应力和最大垂直方向位移分别减小17.2%和20.8%，最短疲劳寿命延长2.3%，模具型腔花纹块上、下端温差由0.106 ℃减小至0.081 ℃，有利于提高轮胎使用性能和延长使用寿命。 |
| 英文摘要: |
| Abstract：The periodic topology optimization mathematical model of tire mold base（referred to as the base） was established by taking the total volume as the design variable，and the optimization was carried out by using a variable density method，aiming at 30% reduction of the total volume and minimization of the base compliance within the optimization domain. Using the optimization model, the stress，fatigue life and heat transfer performance of the base before and after optimization were simulated and analyzed. The results showed that the maximum stress and maximum vertical displacement of the optimized base were reduced by 17. 2% and 20. 8%，respectively，the minimum fatigue life was lengthened by 2. 3%，and the temperature difference between the upper and lower end of the mold cavity pattern block was reduced from 0. 106 ℃ to 0. 081 ℃，which was beneficial to the improvement of the tire performance and service life. |
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