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波纹结构在航天服中应用广泛，航天服通过波纹结构大变形行为实现预计的轨迹运动。由于不规则波纹管结构具有复杂性，现有研究多基于显式动力学法，缺少静力学框架下几何非线性与壳体截面厚度效应的系统性分析。本研究结合静力学与弧长法，引入线性屈曲模态缺陷，分析赋予不同壳厚度后不规则波纹管的极限弯曲行为，得出厚壳模型因几何软化效应表现出更高的表观变形容忍度的结论，并且静力学分析可以精准提取波纹间接触力的分布，为外部力载荷的反演提供基础。本研究基于静力学-弧长法引入缺陷后波纹管的变形行为，揭示了壳体截面厚度对变形路径的调控机制。
Abstract：Ripple structure is widely used in space suits, and the predicted trajectory motion is realized according to its large deformation behavior. Due to the complexity of irregular bellows structure, the existing researches are mostly based on the display dynamic method, and lack the systematic analysis of geometric nonlinearity and the effect of shell section thickness under the framework of statics. This study combines statics and arc length method(Riks), introduces linear buckling mode defects, and analyzes the ultimate bending behavior of irregular bellows with different shell thicknesses. It is concluded that the thick-shell model exhibits higher apparent deformation tolerance due to geometric softening effect, and the contact force distribution between ripples can be accurately extracted by static analysis, which provides a basis for the inversion of external force loads. The deformation mode of bellows after introducing defects based on statics-Riks is proposed, and the control mechanism of shell section thickness on deformation path is revealed.
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基本信息:
DOI：10.16289/j.cnki.1002-0837.2025.02007
中图分类号:V445.3
引用信息:
[1]田翔宇,郭翔鹰,张万欣等.屈曲模态缺陷与弧长法后屈曲分析下的不规则波纹管大变形机理及厚度效应的研究[J].航天医学与医学工程,2025,36(02):123-128.DOI:10.16289/j.cnki.1002-0837.2025.02007.
基金信息:
全国重点实验室基金项目（HFNKL2023WN10）