压缩控制的薄软片动态屈曲
Compression-controlled dynamic buckling in thin soft sheets
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中文总结 AI 辅助
该研究通过实验和理论分析，揭示了橡胶薄片在高压缩速度下进入亚稳态并发生高阶模态增长与粗化的动态屈曲机制，阐明了材料横截面和压缩速度对屈曲动力学的影响。
中文摘要 AI 辅助
我们通过实验研究了橡胶薄片从压缩相到屈曲相转变的动态过程。我们发现，当压缩速度较高时，橡胶条会进入高度压缩的亚稳态。在压缩阶段，高阶模态增长，随后发生模态粗化。模态增长伴随着长度的扩展，而系统仍在被压缩。我们测量了薄片的力和长度以确认这一现象，并提出了模态在动态屈曲过程中增长和粗化的机制。实验中关键控制参数（如材料横截面和压缩速度）对屈曲动力学的影响，已从理论上加以解释。
英文摘要
We investigate experimentally the dynamic phase transition from compressed to buckled phases for thin sheets of rubber. We find that the rubber strips enter a highly compressed, metastable state when compression speed is high. During the compressed phase, higher modes grow, followed by mode coarsening. Mode growth is accompanied by an expansion of length while the system is still being compressed. We measure the forces and length of the sheet to confirm this, and we develop a mechanism for how modes grow and coarsen during dynamical buckling. The influence of crucial control parameters in the experiments, such as the material cross section and compression speed, on the buckling dynamics, are explained theoretically.
发表机构
- Tata Institute of Fundamental Research（塔塔基础研究所）
- Indian Institute of Technology Hyderabad（海得拉巴印度理工学院）
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